Merge XFA to PDFium master at 4dc95e7 on 10/28/2014

55 files changed, 16252 insertions, 0 deletions

diff --git a/xfa_test/pdf/BUILD.gn b/xfa_test/pdf/BUILD.gn
new file mode 100644
index 0000000000..5e1f165b1c
--- /dev/null
+++ b/xfa_test/pdf/BUILD.gn
@@ -0,0 +1,99 @@
+# Copyright 2014 The Chromium Authors. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+pdf_engine = 0  # 0 PDFium
+
+# TODO(GYP) need support for loadable modules
+shared_library("pdf") {
+  sources = [
+    "button.h",
+    "button.cc",
+    "chunk_stream.h",
+    "chunk_stream.cc",
+    "control.h",
+    "control.cc",
+    "document_loader.h",
+    "document_loader.cc",
+    "draw_utils.cc",
+    "draw_utils.h",
+    "fading_control.cc",
+    "fading_control.h",
+    "fading_controls.cc",
+    "fading_controls.h",
+    "instance.cc",
+    "instance.h",
+    "number_image_generator.cc",
+    "number_image_generator.h",
+    "out_of_process_instance.cc",
+    "out_of_process_instance.h",
+    "page_indicator.cc",
+    "page_indicator.h",
+    "paint_aggregator.cc",
+    "paint_aggregator.h",
+    "paint_manager.cc",
+    "paint_manager.h",
+    "pdf.cc",
+    "pdf.h",
+    "pdf.rc",
+    "progress_control.cc",
+    "progress_control.h",
+    "pdf_engine.h",
+    "preview_mode_client.cc",
+    "preview_mode_client.h",
+    "resource.h",
+    "resource_consts.h",
+    "thumbnail_control.cc",
+    "thumbnail_control.h",
+    "../chrome/browser/chrome_page_zoom_constants.cc",
+    "../content/common/page_zoom.cc",
+  ]
+
+  if (pdf_engine == 0) {
+    sources += [
+      "pdfium/pdfium_assert_matching_enums.cc",
+      "pdfium/pdfium_engine.cc",
+      "pdfium/pdfium_engine.h",
+      "pdfium/pdfium_mem_buffer_file_read.cc",
+      "pdfium/pdfium_mem_buffer_file_read.h",
+      "pdfium/pdfium_mem_buffer_file_write.cc",
+      "pdfium/pdfium_mem_buffer_file_write.h",
+      "pdfium/pdfium_page.cc",
+      "pdfium/pdfium_page.h",
+      "pdfium/pdfium_range.cc",
+      "pdfium/pdfium_range.h",
+    ]
+  }
+
+  if (is_win) {
+    defines = [ "COMPILE_CONTENT_STATICALLY" ]
+    cflags = [ "/wd4267" ]  # TODO(jschuh) size_t to int truncations.
+  }
+
+  if (is_mac) {
+    # TODO(GYP)
+    #'mac_bundle': 1,
+    #'product_name': 'PDF',
+    #'product_extension': 'plugin',
+    ## Strip the shipping binary of symbols so "Foxit" doesn't appear in
+    ## the binary.  Symbols are stored in a separate .dSYM.
+    #'variables': {
+    #  'mac_real_dsym': 1,
+    #},
+    #'sources+': [
+    #  'Info.plist'
+    #]
+    #'xcode_settings': {
+    #  'INFOPLIST_FILE': 'Info.plist',
+    #},
+  }
+
+  deps = [
+    "//base",
+    "//net",
+    "//ppapi:ppapi_cpp",
+    "//third_party/pdfium",
+  ]
+}
+
+# TODO(GYP) pdf_linux_symbols target.
diff --git a/xfa_test/pdf/DEPS b/xfa_test/pdf/DEPS
new file mode 100644
index 0000000000..73f2f8f44d
--- /dev/null
+++ b/xfa_test/pdf/DEPS
@@ -0,0 +1,9 @@
+include_rules = [
+  "!chrome/browser/chrome_page_zoom_constants.h",
+  "!chrome/common/content_restriction.h",
+  "!content/public/common/page_zoom.h",
+  "+net",
+  "+ppapi",
+  "+third_party/pdfium/fpdfsdk/include",
+  "+ui/events/keycodes/keyboard_codes.h",
+]
diff --git a/xfa_test/pdf/Info.plist b/xfa_test/pdf/Info.plist
new file mode 100644
index 0000000000..9f3dfdf834
--- /dev/null
+++ b/xfa_test/pdf/Info.plist
@@ -0,0 +1,44 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>CFBundleDevelopmentRegion</key>
+	<string>English</string>
+	<key>CFBundleExecutable</key>
+	<string>${EXECUTABLE_NAME}</string>
+	<key>CFBundleIdentifier</key>
+	<string>org.chromium.pdf_plugin</string>
+	<key>CFBundleInfoDictionaryVersion</key>
+	<string>6.0</string>
+	<key>CFBundleName</key>
+	<string>${PRODUCT_NAME}</string>
+	<key>CFBundlePackageType</key>
+	<string>BRPL</string>
+	<key>CFBundleShortVersionString</key>
+	<string>1.0</string>
+	<key>CFBundleSignature</key>
+	<string>????</string>
+	<key>CFBundleVersion</key>
+	<string>1.0</string>
+	<key>CFPlugInDynamicRegisterFunction</key>
+	<string></string>
+	<key>CFPlugInDynamicRegistration</key>
+	<string>NO</string>
+	<key>WebPluginDescription</key>
+	<string>Chrome PDF Viewer</string>
+	<key>WebPluginMIMETypes</key>
+	<dict>
+		<key>application/pdf</key>
+		<dict>
+			<key>WebPluginExtensions</key>
+			<array>
+				<string>pdf</string>
+			</array>
+			<key>WebPluginTypeDescription</key>
+			<string>Acrobat Portable Document Format</string>
+		</dict>
+	</dict>
+	<key>WebPluginName</key>
+	<string>Chrome PDF Viewer</string>
+</dict>
+</plist>
diff --git a/xfa_test/pdf/OWNERS b/xfa_test/pdf/OWNERS
new file mode 100644
index 0000000000..4b408bc7c9
--- /dev/null
+++ b/xfa_test/pdf/OWNERS
@@ -0,0 +1,4 @@
+gene@chromium.org
+jam@chromium.org
+raymes@chromium.org
+thestig@chromium.org
\ No newline at end of file
diff --git a/xfa_test/pdf/button.cc b/xfa_test/pdf/button.cc
new file mode 100644
index 0000000000..3a30164c14
--- /dev/null
+++ b/xfa_test/pdf/button.cc
@@ -0,0 +1,179 @@
+// Copyright (c) 2010 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "pdf/button.h"
+
+#include "base/logging.h"
+#include "pdf/draw_utils.h"
+#include "ppapi/cpp/input_event.h"
+
+namespace chrome_pdf {
+
+Button::Button()
+    : style_(BUTTON_CLICKABLE), state_(BUTTON_NORMAL), is_pressed_(false) {
+}
+
+Button::~Button() {
+}
+
+bool Button::CreateButton(uint32 id,
+                          const pp::Point& origin,
+                          bool visible,
+                          Control::Owner* owner,
+                          ButtonStyle style,
+                          const pp::ImageData& face_normal,
+                          const pp::ImageData& face_highlighted,
+                          const pp::ImageData& face_pressed) {
+  DCHECK(face_normal.size().GetArea());
+  DCHECK(face_normal.size() == face_highlighted.size());
+  DCHECK(face_normal.size() == face_pressed.size());
+
+  pp::Rect rc(origin, face_normal.size());
+  if (!Control::Create(id, rc, visible, owner))
+    return false;
+
+  style_ = style;
+
+  normal_ = face_normal;
+  highlighted_ = face_highlighted;
+  pressed_ = face_pressed;
+
+  return true;
+}
+
+
+void Button::Paint(pp::ImageData* image_data, const pp::Rect& rc) {
+  if (!visible())
+    return;
+
+  pp::Rect draw_rc = rc.Intersect(rect());
+  if (draw_rc.IsEmpty())
+    return;
+
+  pp::Point origin = draw_rc.point();
+  draw_rc.Offset(-rect().x(), -rect().y());
+
+  AlphaBlend(GetCurrentImage(), draw_rc, image_data, origin, transparency());
+}
+
+bool Button::HandleEvent(const pp::InputEvent& event) {
+  if (!visible())
+    return false;
+
+  // Button handles mouse events only.
+  pp::MouseInputEvent mouse_event(event);
+   if (mouse_event.is_null())
+    return false;
+
+  pp::Point pt = mouse_event.GetPosition();
+  if (!rect().Contains(pt) ||
+      event.GetType() == PP_INPUTEVENT_TYPE_MOUSELEAVE) {
+    ChangeState(BUTTON_NORMAL, false);
+    owner()->SetEventCapture(id(), false);
+    return false;
+  }
+
+  owner()->SetCursor(id(), PP_CURSORTYPE_POINTER);
+  owner()->SetEventCapture(id(), true);
+
+  bool handled = true;
+  switch (event.GetType()) {
+    case PP_INPUTEVENT_TYPE_MOUSEMOVE:
+      if (state_ == BUTTON_NORMAL)
+        ChangeState(BUTTON_HIGHLIGHTED, false);
+      break;
+    case PP_INPUTEVENT_TYPE_MOUSEDOWN:
+      if (mouse_event.GetButton() == PP_INPUTEVENT_MOUSEBUTTON_LEFT) {
+        ChangeState(BUTTON_PRESSED, false);
+        is_pressed_ = true;
+      }
+      break;
+    case PP_INPUTEVENT_TYPE_MOUSEUP:
+      if (mouse_event.GetButton() == PP_INPUTEVENT_MOUSEBUTTON_LEFT &&
+          is_pressed_) {
+        OnButtonClicked();
+        is_pressed_ = false;
+      } else {
+        // Since button has not been pressed, return false to allow other
+        // controls (scrollbar) to process mouse button up.
+        return false;
+      }
+      break;
+    default:
+      handled = false;
+      break;
+  }
+
+  return handled;
+}
+
+void Button::OnEventCaptureReleased() {
+  ChangeState(BUTTON_NORMAL, false);
+}
+
+void Button::Show(bool visible, bool invalidate) {
+  // If button become invisible, remove pressed flag.
+  if (!visible)
+    is_pressed_ = false;
+  Control::Show(visible, invalidate);
+}
+
+void Button::AdjustTransparency(uint8 transparency, bool invalidate) {
+  // If button become invisible, remove pressed flag.
+  if (transparency == kTransparentAlpha)
+    is_pressed_ = false;
+  Control::AdjustTransparency(transparency, invalidate);
+}
+
+void Button::SetPressedState(bool pressed) {
+  if (style_ == BUTTON_STATE) {
+    if (IsPressed() != pressed)
+      ChangeState(pressed ? BUTTON_PRESSED_STICKY : BUTTON_NORMAL, true);
+  }
+}
+
+const pp::ImageData& Button::GetCurrentImage() {
+  switch (state_) {
+    case BUTTON_NORMAL: return normal_;
+    case BUTTON_HIGHLIGHTED: return highlighted_;
+    case BUTTON_PRESSED:
+    case BUTTON_PRESSED_STICKY: return pressed_;
+  }
+  NOTREACHED();
+  return normal_;
+}
+
+void Button::ChangeState(ButtonState new_state, bool force) {
+  if (style_ == BUTTON_STATE && !force) {
+    // If button is a state button and pressed state is sticky,
+    // user have to click on this button again to unpress it.
+    if ((state_ == BUTTON_PRESSED_STICKY && new_state != BUTTON_PRESSED_STICKY)
+        ||
+        (state_ != BUTTON_PRESSED_STICKY && new_state == BUTTON_PRESSED_STICKY))
+      return;
+  }
+
+  if (state_ != new_state) {
+    state_ = new_state;
+    owner()->Invalidate(id(), rect());
+  }
+}
+
+void Button::OnButtonClicked() {
+  switch (style_) {
+    case BUTTON_CLICKABLE:
+      ChangeState(BUTTON_HIGHLIGHTED, true);
+      owner()->OnEvent(id(), EVENT_ID_BUTTON_CLICKED, NULL);
+      break;
+    case BUTTON_STATE:
+      SetPressedState(!IsPressed());
+      owner()->OnEvent(id(), EVENT_ID_BUTTON_STATE_CHANGED, NULL);
+      break;
+    default:
+      NOTREACHED();
+  }
+}
+
+}  // namespace chrome_pdf
+
diff --git a/xfa_test/pdf/button.h b/xfa_test/pdf/button.h
new file mode 100644
index 0000000000..fa2517d62b
--- /dev/null
+++ b/xfa_test/pdf/button.h
@@ -0,0 +1,71 @@
+// Copyright (c) 2010 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef PDF_BUTTON_H_
+#define PDF_BUTTON_H_
+
+#include "pdf/control.h"
+#include "ppapi/cpp/image_data.h"
+#include "ppapi/cpp/rect.h"
+
+namespace chrome_pdf {
+
+class Button : public Control {
+ public:
+  enum ButtonEventIds {
+    EVENT_ID_BUTTON_CLICKED,
+    EVENT_ID_BUTTON_STATE_CHANGED,
+  };
+
+  enum ButtonStyle {
+    BUTTON_CLICKABLE,
+    BUTTON_STATE
+  };
+
+  enum ButtonState {
+    BUTTON_NORMAL,
+    BUTTON_HIGHLIGHTED,
+    BUTTON_PRESSED,
+    BUTTON_PRESSED_STICKY,
+  };
+
+  Button();
+  virtual ~Button();
+  virtual bool CreateButton(uint32 id,
+                            const pp::Point& origin,
+                            bool visible,
+                            Control::Owner* delegate,
+                            ButtonStyle style,
+                            const pp::ImageData& face_normal,
+                            const pp::ImageData& face_highlighted,
+                            const pp::ImageData& face_pressed);
+
+  virtual void Paint(pp::ImageData* image_data, const pp::Rect& rc);
+  virtual bool HandleEvent(const pp::InputEvent& event);
+  virtual void OnEventCaptureReleased();
+  virtual void Show(bool visible, bool invalidate);
+  virtual void AdjustTransparency(uint8 transparency, bool invalidate);
+
+  ButtonState state() const { return state_; }
+  bool IsPressed() const { return state() == BUTTON_PRESSED_STICKY; }
+  void SetPressedState(bool pressed);
+
+ private:
+  void OnButtonClicked();
+
+  const pp::ImageData& GetCurrentImage();
+  void ChangeState(ButtonState new_state, bool force);
+
+  ButtonStyle style_;
+  ButtonState state_;
+  bool is_pressed_;
+
+  pp::ImageData normal_;
+  pp::ImageData highlighted_;
+  pp::ImageData pressed_;
+};
+
+}  // namespace chrome_pdf
+
+#endif  // PDF_BUTTON_H_
diff --git a/xfa_test/pdf/chunk_stream.cc b/xfa_test/pdf/chunk_stream.cc
new file mode 100644
index 0000000000..7ac8f974a5
--- /dev/null
+++ b/xfa_test/pdf/chunk_stream.cc
@@ -0,0 +1,172 @@
+// Copyright (c) 2010 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "pdf/chunk_stream.h"
+
+#define __STDC_LIMIT_MACROS
+#ifdef _WIN32
+#include <limits.h>
+#else
+#include <stdint.h>
+#endif
+
+#include <algorithm>
+
+#include "base/basictypes.h"
+
+namespace chrome_pdf {
+
+ChunkStream::ChunkStream() {
+}
+
+ChunkStream::~ChunkStream() {
+}
+
+void ChunkStream::Clear() {
+  chunks_.clear();
+  data_.clear();
+}
+
+void ChunkStream::Preallocate(size_t stream_size) {
+  data_.reserve(stream_size);
+}
+
+size_t ChunkStream::GetSize() {
+  return data_.size();
+}
+
+bool ChunkStream::WriteData(size_t offset, void* buffer, size_t size) {
+  if (SIZE_MAX - size < offset)
+    return false;
+
+  if (data_.size() < offset + size)
+    data_.resize(offset + size);
+
+  memcpy(&data_[offset], buffer, size);
+
+  if (chunks_.empty()) {
+    chunks_[offset] = size;
+    return true;
+  }
+
+  std::map<size_t, size_t>::iterator start = chunks_.upper_bound(offset);
+  if (start != chunks_.begin())
+    --start;  // start now points to the key equal or lower than offset.
+  if (start->first + start->second < offset)
+    ++start;  // start element is entirely before current chunk, skip it.
+
+  std::map<size_t, size_t>::iterator end = chunks_.upper_bound(offset + size);
+  if (start == end) {  // No chunks to merge.
+    chunks_[offset] = size;
+    return true;
+  }
+
+  --end;
+
+  size_t new_offset = std::min<size_t>(start->first, offset);
+  size_t new_size =
+      std::max<size_t>(end->first + end->second, offset + size) - new_offset;
+
+  chunks_.erase(start, ++end);
+
+  chunks_[new_offset] = new_size;
+
+  return true;
+}
+
+bool ChunkStream::ReadData(size_t offset, size_t size, void* buffer) const {
+  if (!IsRangeAvailable(offset, size))
+    return false;
+
+  memcpy(buffer, &data_[offset], size);
+  return true;
+}
+
+bool ChunkStream::GetMissedRanges(
+    size_t offset, size_t size,
+    std::vector<std::pair<size_t, size_t> >* ranges) const {
+  if (IsRangeAvailable(offset, size))
+    return false;
+
+  ranges->clear();
+  if (chunks_.empty()) {
+    ranges->push_back(std::pair<size_t, size_t>(offset, size));
+    return true;
+  }
+
+  std::map<size_t, size_t>::const_iterator start = chunks_.upper_bound(offset);
+  if (start != chunks_.begin())
+    --start;  // start now points to the key equal or lower than offset.
+  if (start->first + start->second < offset)
+    ++start;  // start element is entirely before current chunk, skip it.
+
+  std::map<size_t, size_t>::const_iterator end =
+      chunks_.upper_bound(offset + size);
+  if (start == end) {  // No data in the current range available.
+    ranges->push_back(std::pair<size_t, size_t>(offset, size));
+    return true;
+  }
+
+  size_t cur_offset = offset;
+  std::map<size_t, size_t>::const_iterator it;
+  for (it = start; it != end; ++it) {
+    if (cur_offset < it->first) {
+      size_t new_size = it->first - cur_offset;
+      ranges->push_back(std::pair<size_t, size_t>(cur_offset, new_size));
+      cur_offset = it->first + it->second;
+    } else if (cur_offset < it->first + it->second) {
+      cur_offset = it->first + it->second;
+    }
+  }
+
+  // Add last chunk.
+  if (cur_offset < offset + size)
+    ranges->push_back(std::pair<size_t, size_t>(cur_offset,
+        offset + size - cur_offset));
+
+  return true;
+}
+
+bool ChunkStream::IsRangeAvailable(size_t offset, size_t size) const {
+  if (chunks_.empty())
+    return false;
+
+  if (SIZE_MAX - size < offset)
+    return false;
+
+  std::map<size_t, size_t>::const_iterator it = chunks_.upper_bound(offset);
+  if (it == chunks_.begin())
+    return false;  // No chunks includes offset byte.
+
+  --it;  // Now it starts equal or before offset.
+  return (it->first + it->second) >= (offset + size);
+}
+
+size_t ChunkStream::GetFirstMissingByte() const {
+  if (chunks_.empty())
+    return 0;
+  std::map<size_t, size_t>::const_iterator begin = chunks_.begin();
+  return begin->first > 0 ? 0 : begin->second;
+}
+
+size_t ChunkStream::GetLastByteBefore(size_t offset) const {
+  if (chunks_.empty())
+    return 0;
+  std::map<size_t, size_t>::const_iterator it = chunks_.upper_bound(offset);
+  if (it == chunks_.begin())
+    return 0;
+  --it;
+  return it->first + it->second;
+}
+
+size_t ChunkStream::GetFirstByteAfter(size_t offset) const {
+  if (chunks_.empty())
+    return 0;
+  std::map<size_t, size_t>::const_iterator it = chunks_.upper_bound(offset);
+  if (it == chunks_.end())
+    return data_.size();
+  return it->first;
+}
+
+}  // namespace chrome_pdf
diff --git a/xfa_test/pdf/chunk_stream.h b/xfa_test/pdf/chunk_stream.h
new file mode 100644
index 0000000000..fac1ec644d
--- /dev/null
+++ b/xfa_test/pdf/chunk_stream.h
@@ -0,0 +1,48 @@
+// Copyright (c) 2010 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef PDF_CHUNK_STREAM_H_
+#define PDF_CHUNK_STREAM_H_
+
+#include <stddef.h>
+
+#include <map>
+#include <vector>
+
+namespace chrome_pdf {
+
+// This class collects a chunks of data into one data stream. Client can check
+// if data in certain range is available, and get missing chunks of data.
+class ChunkStream {
+ public:
+  ChunkStream();
+  ~ChunkStream();
+
+  void Clear();
+
+  void Preallocate(size_t stream_size);
+  size_t GetSize();
+
+  bool WriteData(size_t offset, void* buffer, size_t size);
+  bool ReadData(size_t offset, size_t size, void* buffer) const;
+
+  // Returns vector of pairs where first is an offset, second is a size.
+  bool GetMissedRanges(size_t offset, size_t size,
+      std::vector<std::pair<size_t, size_t> >* ranges) const;
+  bool IsRangeAvailable(size_t offset, size_t size) const;
+  size_t GetFirstMissingByte() const;
+
+  size_t GetLastByteBefore(size_t offset) const;
+  size_t GetFirstByteAfter(size_t offset) const;
+
+ private:
+  std::vector<unsigned char> data_;
+
+  // Pair, first - begining of the chunk, second - size of the chunk.
+  std::map<size_t, size_t> chunks_;
+};
+
+};  // namespace chrome_pdf
+
+#endif
diff --git a/xfa_test/pdf/control.cc b/xfa_test/pdf/control.cc
new file mode 100644
index 0000000000..ed911b6b95
--- /dev/null
+++ b/xfa_test/pdf/control.cc
@@ -0,0 +1,117 @@
+// Copyright (c) 2012 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "pdf/control.h"
+
+#include "base/logging.h"
+#include "pdf/draw_utils.h"
+
+namespace chrome_pdf {
+
+Control::Control()
+    : id_(kInvalidControlId),
+      visible_(false),
+      owner_(NULL),
+      transparency_(kOpaqueAlpha) {
+}
+
+Control::~Control() {
+}
+
+bool Control::Create(uint32 id, const pp::Rect& rc,
+                     bool visible, Owner* owner) {
+  DCHECK(owner);
+  if (owner_ || id == kInvalidControlId)
+    return false;  // Already created or id is invalid.
+  id_ = id;
+  rc_ = rc;
+  visible_ = visible;
+  owner_ = owner;
+  return true;
+}
+
+bool Control::HandleEvent(const pp::InputEvent& event) {
+  return false;
+}
+
+void Control::PaintMultipleRects(pp::ImageData* image_data,
+                                 const std::list<pp::Rect>& rects) {
+  DCHECK(rects.size() > 0);
+  if (rects.size() == 1) {
+    Paint(image_data, rects.front());
+    return;
+  }
+
+  // Some rects in the input list may overlap. To prevent double
+  // painting (causes problems with semi-transparent controls) we'll
+  // paint control into buffer image data only once and copy requested
+  // rectangles.
+  pp::ImageData buffer(owner()->GetInstance(), image_data->format(),
+                       rect().size(), false);
+  if (buffer.is_null())
+    return;
+
+  pp::Rect draw_rc = pp::Rect(image_data->size()).Intersect(rect());
+  pp::Rect ctrl_rc = pp::Rect(draw_rc.point() - rect().point(), draw_rc.size());
+  CopyImage(*image_data, draw_rc, &buffer, ctrl_rc, false);
+
+  // Temporary move control to origin (0,0) and draw it into temp buffer.
+  // Move to the original position afterward. Since this is going on temp
+  // buffer, we don't need to invalidate here.
+  pp::Rect temp = rect();
+  MoveTo(pp::Point(0, 0), false);
+  Paint(&buffer, ctrl_rc);
+  MoveTo(temp.point(), false);
+
+  std::list<pp::Rect>::const_iterator iter;
+  for (iter = rects.begin(); iter != rects.end(); ++iter) {
+    pp::Rect draw_rc = rect().Intersect(*iter);
+    if (!draw_rc.IsEmpty()) {
+      // Copy requested rect from the buffer image.
+      pp::Rect src_rc = draw_rc;
+      src_rc.Offset(-rect().x(), -rect().y());
+      CopyImage(buffer, src_rc, image_data, draw_rc, false);
+    }
+  }
+}
+
+void Control::Show(bool visible, bool invalidate) {
+  if (visible_ != visible) {
+    visible_ = visible;
+    if (invalidate)
+      owner_->Invalidate(id_, rc_);
+  }
+}
+
+void Control::AdjustTransparency(uint8 transparency, bool invalidate) {
+  if (transparency_ != transparency) {
+    transparency_ = transparency;
+    if (invalidate && visible_)
+      owner_->Invalidate(id_, rc_);
+  }
+}
+
+void Control::MoveBy(const pp::Point& offset, bool invalidate) {
+  pp::Rect old_rc = rc_;
+  rc_.Offset(offset);
+  if (invalidate && visible_) {
+    owner()->Invalidate(id(), old_rc);
+    owner()->Invalidate(id(), rect());
+  }
+}
+
+void Control::SetRect(const pp::Rect& rc, bool invalidate) {
+  pp::Rect old_rc = rc_;
+  rc_ = rc;
+  if (invalidate && visible_) {
+    owner()->Invalidate(id(), old_rc);
+    owner()->Invalidate(id(), rect());
+  }
+}
+
+void Control::MoveTo(const pp::Point& origin, bool invalidate) {
+  MoveBy(origin - rc_.point(), invalidate);
+}
+
+}  // namespace chrome_pdf
diff --git a/xfa_test/pdf/control.h b/xfa_test/pdf/control.h
new file mode 100644
index 0000000000..babb37a2c0
--- /dev/null
+++ b/xfa_test/pdf/control.h
@@ -0,0 +1,77 @@
+// Copyright (c) 2012 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef PDF_CONTROL_H_
+#define PDF_CONTROL_H_
+
+#include <list>
+
+#include "base/basictypes.h"
+#include "ppapi/c/dev/pp_cursor_type_dev.h"
+#include "ppapi/cpp/rect.h"
+
+namespace pp {
+class ImageData;
+class InputEvent;
+class Instance;
+}
+
+namespace chrome_pdf {
+
+const uint32 kInvalidControlId = 0;
+
+class Control {
+ public:
+  class Owner {
+   public:
+    virtual ~Owner() {}
+    virtual void OnEvent(uint32 control_id, uint32 event_id, void* data) = 0;
+    virtual void Invalidate(uint32 control_id, const pp::Rect& rc) = 0;
+    virtual uint32 ScheduleTimer(uint32 control_id, uint32 timeout_ms) = 0;
+    virtual void SetEventCapture(uint32 control_id, bool set_capture) = 0;
+    virtual void SetCursor(uint32 control_id,
+                           PP_CursorType_Dev cursor_type) = 0;
+    virtual pp::Instance* GetInstance() = 0;
+  };
+
+  Control();
+  virtual ~Control();
+  virtual bool Create(uint32 id, const pp::Rect& rc,
+                      bool visible, Owner* owner);
+
+  virtual void Paint(pp::ImageData* image_data, const pp::Rect& rc) {}
+  virtual bool HandleEvent(const pp::InputEvent& event);
+  virtual void OnTimerFired(uint32 timer_id) {}
+  virtual void EventCaptureReleased() {}
+
+  // Paint control into multiple destination rects.
+  virtual void PaintMultipleRects(pp::ImageData* image_data,
+                                  const std::list<pp::Rect>& rects);
+
+  virtual void Show(bool visible, bool invalidate);
+  virtual void AdjustTransparency(uint8 transparency, bool invalidate);
+  virtual void MoveBy(const pp::Point& offset, bool invalidate);
+  virtual void SetRect(const pp::Rect& rc, bool invalidate);
+
+  void MoveTo(const pp::Point& origin, bool invalidate);
+
+  uint32 id() const { return id_; }
+  const pp::Rect& rect() const { return rc_; }
+  bool visible() const { return visible_; }
+  Owner* owner() { return owner_; }
+  uint8 transparency() const { return transparency_; }
+
+ private:
+  uint32 id_;
+  pp::Rect rc_;
+  bool visible_;
+  Owner* owner_;
+  uint8 transparency_;
+};
+
+typedef Control::Owner ControlOwner;
+
+}  // namespace chrome_pdf
+
+#endif  // PDF_CONTROL_H_
diff --git a/xfa_test/pdf/document_loader.cc b/xfa_test/pdf/document_loader.cc
new file mode 100644
index 0000000000..b2628a6271
--- /dev/null
+++ b/xfa_test/pdf/document_loader.cc
@@ -0,0 +1,513 @@
+// Copyright (c) 2010 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "pdf/document_loader.h"
+
+#include "base/logging.h"
+#include "base/strings/string_util.h"
+#include "net/http/http_util.h"
+#include "ppapi/c/pp_errors.h"
+#include "ppapi/cpp/url_loader.h"
+#include "ppapi/cpp/url_request_info.h"
+#include "ppapi/cpp/url_response_info.h"
+
+namespace chrome_pdf {
+
+// Document below size will be downloaded in one chunk.
+const uint32 kMinFileSize = 64*1024;
+
+DocumentLoader::DocumentLoader(Client* client)
+    : client_(client), partial_document_(false), request_pending_(false),
+      current_pos_(0), current_chunk_size_(0), current_chunk_read_(0),
+      document_size_(0), header_request_(true), is_multipart_(false) {
+  loader_factory_.Initialize(this);
+}
+
+DocumentLoader::~DocumentLoader() {
+}
+
+bool DocumentLoader::Init(const pp::URLLoader& loader,
+                          const std::string& url,
+                          const std::string& headers) {
+  DCHECK(url_.empty());
+  url_ = url;
+  loader_ = loader;
+
+  std::string response_headers;
+  if (!headers.empty()) {
+    response_headers = headers;
+  } else {
+    pp::URLResponseInfo response = loader_.GetResponseInfo();
+    pp::Var headers_var = response.GetHeaders();
+
+    if (headers_var.is_string()) {
+      response_headers = headers_var.AsString();
+    }
+  }
+
+  bool accept_ranges_bytes = false;
+  bool content_encoded = false;
+  uint32 content_length = 0;
+  std::string type;
+  std::string disposition;
+  if (!response_headers.empty()) {
+    net::HttpUtil::HeadersIterator it(response_headers.begin(),
+                                      response_headers.end(), "\n");
+    while (it.GetNext()) {
+      if (LowerCaseEqualsASCII(it.name(), "content-length")) {
+        content_length = atoi(it.values().c_str());
+      } else if (LowerCaseEqualsASCII(it.name(), "accept-ranges")) {
+        accept_ranges_bytes = LowerCaseEqualsASCII(it.values(), "bytes");
+      } else if (LowerCaseEqualsASCII(it.name(), "content-encoding")) {
+        content_encoded = true;
+      } else if (LowerCaseEqualsASCII(it.name(), "content-type")) {
+        type = it.values();
+        size_t semi_colon_pos = type.find(';');
+        if (semi_colon_pos != std::string::npos) {
+          type = type.substr(0, semi_colon_pos);
+        }
+        TrimWhitespace(type, base::TRIM_ALL, &type);
+      } else if (LowerCaseEqualsASCII(it.name(), "content-disposition")) {
+        disposition = it.values();
+      }
+    }
+  }
+  if (!type.empty() &&
+      !EndsWith(type, "/pdf", false) &&
+      !EndsWith(type, ".pdf", false) &&
+      !EndsWith(type, "/x-pdf", false) &&
+      !EndsWith(type, "/*", false) &&
+      !EndsWith(type, "/acrobat", false) &&
+      !EndsWith(type, "/unknown", false)) {
+    return false;
+  }
+  if (StartsWithASCII(disposition, "attachment", false)) {
+    return false;
+  }
+
+  if (content_length > 0)
+    chunk_stream_.Preallocate(content_length);
+
+  document_size_ = content_length;
+  requests_count_ = 0;
+
+  // Enable partial loading only if file size is above the threshold.
+  // It will allow avoiding latency for multiple requests.
+  if (content_length > kMinFileSize &&
+      accept_ranges_bytes &&
+      !content_encoded) {
+    LoadPartialDocument();
+  } else {
+    LoadFullDocument();
+  }
+  return true;
+}
+
+void DocumentLoader::LoadPartialDocument() {
+  partial_document_ = true;
+  // Force the main request to be cancelled, since if we're a full-frame plugin
+  // there could be other references to the loader.
+  loader_.Close();
+  loader_ = pp::URLLoader();
+  // Download file header.
+  header_request_ = true;
+  RequestData(0, std::min(GetRequestSize(), document_size_));
+}
+
+void DocumentLoader::LoadFullDocument() {
+  partial_document_ = false;
+  chunk_buffer_.clear();
+  ReadMore();
+}
+
+bool DocumentLoader::IsDocumentComplete() const {
+  if (document_size_ == 0)  // Document size unknown.
+    return false;
+  return IsDataAvailable(0, document_size_);
+}
+
+uint32 DocumentLoader::GetAvailableData() const {
+  if (document_size_ == 0) {  // If document size is unknown.
+    return current_pos_;
+  }
+
+  std::vector<std::pair<size_t, size_t> > ranges;
+  chunk_stream_.GetMissedRanges(0, document_size_, &ranges);
+  uint32 available = document_size_;
+  std::vector<std::pair<size_t, size_t> >::iterator it;
+  for (it = ranges.begin(); it != ranges.end(); ++it) {
+    available -= it->second;
+  }
+  return available;
+}
+
+void DocumentLoader::ClearPendingRequests() {
+  // The first item in the queue is pending (need to keep it in the queue).
+  if (pending_requests_.size() > 1) {
+    // Remove all elements except the first one.
+    pending_requests_.erase(++pending_requests_.begin(),
+                            pending_requests_.end());
+  }
+}
+
+bool DocumentLoader::GetBlock(uint32 position, uint32 size, void* buf) const {
+  return chunk_stream_.ReadData(position, size, buf);
+}
+
+bool DocumentLoader::IsDataAvailable(uint32 position, uint32 size) const {
+  return chunk_stream_.IsRangeAvailable(position, size);
+}
+
+void DocumentLoader::RequestData(uint32 position, uint32 size) {
+  DCHECK(partial_document_);
+
+  // We have some artefact request from
+  // PDFiumEngine::OnDocumentComplete() -> FPDFAvail_IsPageAvail after
+  // document is complete.
+  // We need this fix in PDFIum. Adding this as a work around.
+  // Bug: http://code.google.com/p/chromium/issues/detail?id=79996
+  // Test url:
+  // http://www.icann.org/en/correspondence/holtzman-to-jeffrey-02mar11-en.pdf
+  if (IsDocumentComplete())
+    return;
+
+  pending_requests_.push_back(std::pair<size_t, size_t>(position, size));
+  DownloadPendingRequests();
+}
+
+void DocumentLoader::DownloadPendingRequests() {
+  if (request_pending_ || pending_requests_.empty())
+    return;
+
+  // Remove already completed requests.
+  // By design DownloadPendingRequests() should have at least 1 request in the
+  // queue. ReadComplete() will remove the last pending comment from the queue.
+  while (pending_requests_.size() > 1) {
+    if (IsDataAvailable(pending_requests_.front().first,
+                        pending_requests_.front().second)) {
+      pending_requests_.pop_front();
+    } else {
+      break;
+    }
+  }
+
+  uint32 pos = pending_requests_.front().first;
+  uint32 size = pending_requests_.front().second;
+  if (IsDataAvailable(pos, size)) {
+    ReadComplete();
+    return;
+  }
+
+  // If current request has been partially downloaded already, split it into
+  // a few smaller requests.
+  std::vector<std::pair<size_t, size_t> > ranges;
+  chunk_stream_.GetMissedRanges(pos, size, &ranges);
+  if (ranges.size() > 0) {
+    pending_requests_.pop_front();
+    pending_requests_.insert(pending_requests_.begin(),
+                             ranges.begin(), ranges.end());
+    pos = pending_requests_.front().first;
+    size = pending_requests_.front().second;
+  }
+
+  uint32 cur_request_size = GetRequestSize();
+  // If size is less than default request, try to expand download range for
+  // more optimal download.
+  if (size < cur_request_size && partial_document_) {
+    // First, try to expand block towards the end of the file.
+    uint32 new_pos = pos;
+    uint32 new_size = cur_request_size;
+    if (pos + new_size > document_size_)
+      new_size = document_size_ - pos;
+
+    std::vector<std::pair<size_t, size_t> > ranges;
+    if (chunk_stream_.GetMissedRanges(new_pos, new_size, &ranges)) {
+      new_pos = ranges[0].first;
+      new_size = ranges[0].second;
+    }
+
+    // Second, try to expand block towards the beginning of the file.
+    if (new_size < cur_request_size) {
+      uint32 block_end = new_pos + new_size;
+      if (block_end > cur_request_size) {
+        new_pos = block_end - cur_request_size;
+      } else {
+        new_pos = 0;
+      }
+      new_size = block_end - new_pos;
+
+      if (chunk_stream_.GetMissedRanges(new_pos, new_size, &ranges)) {
+        new_pos = ranges.back().first;
+        new_size = ranges.back().second;
+      }
+    }
+    pos = new_pos;
+    size = new_size;
+  }
+
+  size_t last_byte_before = chunk_stream_.GetLastByteBefore(pos);
+  size_t first_byte_after = chunk_stream_.GetFirstByteAfter(pos + size - 1);
+  if (pos - last_byte_before < cur_request_size) {
+    size = pos + size - last_byte_before;
+    pos = last_byte_before;
+  }
+
+  if ((pos + size < first_byte_after) &&
+      (pos + size + cur_request_size >= first_byte_after))
+    size = first_byte_after - pos;
+
+  request_pending_ = true;
+
+  // Start downloading first pending request.
+  loader_.Close();
+  loader_ = client_->CreateURLLoader();
+  pp::CompletionCallback callback =
+      loader_factory_.NewCallback(&DocumentLoader::DidOpen);
+  pp::URLRequestInfo request = GetRequest(pos, size);
+  requests_count_++;
+  int rv = loader_.Open(request, callback);
+  if (rv != PP_OK_COMPLETIONPENDING)
+    callback.Run(rv);
+}
+
+pp::URLRequestInfo DocumentLoader::GetRequest(uint32 position,
+                                              uint32 size) const {
+  pp::URLRequestInfo request(client_->GetPluginInstance());
+  request.SetURL(url_.c_str());
+  request.SetMethod("GET");
+  request.SetFollowRedirects(true);
+
+  const size_t kBufSize = 100;
+  char buf[kBufSize];
+  // According to rfc2616, byte range specifies position of the first and last
+  // bytes in the requested range inclusively. Therefore we should subtract 1
+  // from the position + size, to get index of the last byte that needs to be
+  // downloaded.
+  base::snprintf(buf, kBufSize, "Range: bytes=%d-%d", position,
+                 position + size - 1);
+  pp::Var header(buf);
+  request.SetHeaders(header);
+
+  return request;
+}
+
+void DocumentLoader::DidOpen(int32_t result) {
+  if (result != PP_OK) {
+    NOTREACHED();
+    return;
+  }
+
+  int32_t http_code = loader_.GetResponseInfo().GetStatusCode();
+  if (http_code >= 400 && http_code < 500) {
+    // Error accessing resource. 4xx error indicate subsequent requests
+    // will fail too.
+    // E.g. resource has been removed from the server while loading it.
+    // https://code.google.com/p/chromium/issues/detail?id=414827
+    return;
+  }
+
+  is_multipart_ = false;
+  current_chunk_size_ = 0;
+  current_chunk_read_ = 0;
+
+  pp::Var headers_var = loader_.GetResponseInfo().GetHeaders();
+  std::string headers;
+  if (headers_var.is_string())
+    headers = headers_var.AsString();
+
+  std::string boundary = GetMultiPartBoundary(headers);
+  if (boundary.size()) {
+    // Leave position untouched for now, when we read the data we'll get it.
+    is_multipart_ = true;
+    multipart_boundary_ = boundary;
+  } else {
+    // Need to make sure that the server returned a byte-range, since it's
+    // possible for a server to just ignore our bye-range request and just
+    // return the entire document even if it supports byte-range requests.
+    // i.e. sniff response to
+    // http://www.act.org/compass/sample/pdf/geometry.pdf
+    current_pos_ = 0;
+    uint32 start_pos, end_pos;
+    if (GetByteRange(headers, &start_pos, &end_pos)) {
+      current_pos_ = start_pos;
+      if (end_pos && end_pos > start_pos)
+        current_chunk_size_ = end_pos - start_pos + 1;
+    }
+  }
+
+  ReadMore();
+}
+
+bool DocumentLoader::GetByteRange(const std::string& headers, uint32* start,
+                                  uint32* end) {
+  net::HttpUtil::HeadersIterator it(headers.begin(), headers.end(), "\n");
+  while (it.GetNext()) {
+    if (LowerCaseEqualsASCII(it.name(), "content-range")) {
+      std::string range = it.values().c_str();
+      if (StartsWithASCII(range, "bytes", false)) {
+        range = range.substr(strlen("bytes"));
+        std::string::size_type pos = range.find('-');
+        std::string range_end;
+        if (pos != std::string::npos)
+          range_end = range.substr(pos + 1);
+        TrimWhitespaceASCII(range, base::TRIM_LEADING, &range);
+        TrimWhitespaceASCII(range_end, base::TRIM_LEADING, &range_end);
+        *start = atoi(range.c_str());
+        *end = atoi(range_end.c_str());
+        return true;
+      }
+    }
+  }
+  return false;
+}
+
+std::string DocumentLoader::GetMultiPartBoundary(const std::string& headers) {
+  net::HttpUtil::HeadersIterator it(headers.begin(), headers.end(), "\n");
+  while (it.GetNext()) {
+    if (LowerCaseEqualsASCII(it.name(), "content-type")) {
+      std::string type = base::StringToLowerASCII(it.values());
+      if (StartsWithASCII(type, "multipart/", true)) {
+        const char* boundary = strstr(type.c_str(), "boundary=");
+        if (!boundary) {
+          NOTREACHED();
+          break;
+        }
+
+        return std::string(boundary + 9);
+      }
+    }
+  }
+  return std::string();
+}
+
+void DocumentLoader::ReadMore() {
+  pp::CompletionCallback callback =
+        loader_factory_.NewCallback(&DocumentLoader::DidRead);
+  int rv = loader_.ReadResponseBody(buffer_, sizeof(buffer_), callback);
+  if (rv != PP_OK_COMPLETIONPENDING)
+    callback.Run(rv);
+}
+
+void DocumentLoader::DidRead(int32_t result) {
+  if (result > 0) {
+    char* start = buffer_;
+    size_t length = result;
+    if (is_multipart_ && result > 2) {
+      for (int i = 2; i < result; ++i) {
+        if ((buffer_[i - 1] == '\n' && buffer_[i - 2] == '\n') ||
+            (i >= 4 &&
+             buffer_[i - 1] == '\n' && buffer_[i - 2] == '\r' &&
+             buffer_[i - 3] == '\n' && buffer_[i - 4] == '\r')) {
+          uint32 start_pos, end_pos;
+          if (GetByteRange(std::string(buffer_, i), &start_pos, &end_pos)) {
+            current_pos_ = start_pos;
+            start += i;
+            length -= i;
+            if (end_pos && end_pos > start_pos)
+              current_chunk_size_ = end_pos - start_pos + 1;
+          }
+          break;
+        }
+      }
+
+      // Reset this flag so we don't look inside the buffer in future calls of
+      // DidRead for this response.  Note that this code DOES NOT handle multi-
+      // part responses with more than one part (we don't issue them at the
+      // moment, so they shouldn't arrive).
+      is_multipart_ = false;
+    }
+
+    if (current_chunk_size_ &&
+        current_chunk_read_ + length > current_chunk_size_)
+      length = current_chunk_size_ - current_chunk_read_;
+
+    if (length) {
+      if (document_size_ > 0) {
+        chunk_stream_.WriteData(current_pos_, start, length);
+      } else {
+        // If we did not get content-length in the response, we can't
+        // preallocate buffer for the entire document. Resizing array causing
+        // memory fragmentation issues on the large files and OOM exceptions.
+        // To fix this, we collect all chunks of the file to the list and
+        // concatenate them together after request is complete.
+        chunk_buffer_.push_back(std::vector<unsigned char>());
+        chunk_buffer_.back().resize(length);
+        memcpy(&(chunk_buffer_.back()[0]), start, length);
+      }
+      current_pos_ += length;
+      current_chunk_read_ += length;
+      client_->OnNewDataAvailable();
+    }
+    ReadMore();
+  } else if (result == PP_OK) {
+    ReadComplete();
+  } else {
+    NOTREACHED();
+  }
+}
+
+void DocumentLoader::ReadComplete() {
+  if (!partial_document_) {
+    if (document_size_ == 0) {
+      // For the document with no 'content-length" specified we've collected all
+      // the chunks already. Let's allocate final document buffer and copy them
+      // over.
+      chunk_stream_.Preallocate(current_pos_);
+      uint32 pos = 0;
+      std::list<std::vector<unsigned char> >::iterator it;
+      for (it = chunk_buffer_.begin(); it != chunk_buffer_.end(); ++it) {
+        chunk_stream_.WriteData(pos, &((*it)[0]), it->size());
+        pos += it->size();
+      }
+      chunk_buffer_.clear();
+    }
+    document_size_ = current_pos_;
+    client_->OnDocumentComplete();
+    return;
+  }
+
+  request_pending_ = false;
+  pending_requests_.pop_front();
+
+  // If there are more pending request - continue downloading.
+  if (!pending_requests_.empty()) {
+    DownloadPendingRequests();
+    return;
+  }
+
+  if (IsDocumentComplete()) {
+    client_->OnDocumentComplete();
+    return;
+  }
+
+  if (header_request_)
+    client_->OnPartialDocumentLoaded();
+  else
+    client_->OnPendingRequestComplete();
+  header_request_ = false;
+
+  // The OnPendingRequestComplete could have added more requests.
+  if (!pending_requests_.empty()) {
+    DownloadPendingRequests();
+  } else {
+    // Document is not complete and we have no outstanding requests.
+    // Let's keep downloading PDF file in small chunks.
+    uint32 pos = chunk_stream_.GetFirstMissingByte();
+    std::vector<std::pair<size_t, size_t> > ranges;
+    chunk_stream_.GetMissedRanges(pos, GetRequestSize(), &ranges);
+    DCHECK(ranges.size() > 0);
+    RequestData(ranges[0].first, ranges[0].second);
+  }
+}
+
+uint32 DocumentLoader::GetRequestSize() const {
+  // Document loading strategy:
+  // For first 10 requests, we use 32k chunk sizes, for the next 10 requests we
+  // double the size (64k), and so on, until we cap max request size at 2M for
+  // 71 or more requests.
+  uint32 limited_count = std::min(std::max(requests_count_, 10u), 70u);
+  return 32*1024 * (1 << ((limited_count - 1) / 10u));
+}
+
+}  // namespace chrome_pdf
diff --git a/xfa_test/pdf/document_loader.h b/xfa_test/pdf/document_loader.h
new file mode 100644
index 0000000000..c09dba2ddd
--- /dev/null
+++ b/xfa_test/pdf/document_loader.h
@@ -0,0 +1,124 @@
+// Copyright (c) 2010 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef PDF_DOCUMENT_LOADER_H_
+#define PDF_DOCUMENT_LOADER_H_
+
+#include <list>
+#include <string>
+#include <vector>
+
+#include "base/basictypes.h"
+#include "pdf/chunk_stream.h"
+#include "ppapi/cpp/url_loader.h"
+#include "ppapi/utility/completion_callback_factory.h"
+
+#define kDefaultRequestSize 32768u
+
+namespace chrome_pdf {
+
+class DocumentLoader {
+ public:
+  class Client {
+  public:
+    // Gets the pp::Instance object.
+    virtual pp::Instance* GetPluginInstance() = 0;
+    // Creates new URLLoader based on client settings.
+    virtual pp::URLLoader CreateURLLoader() = 0;
+    // Notification called when partial information about document is available.
+    // Only called for urls that returns full content size and supports byte
+    // range requests.
+    virtual void OnPartialDocumentLoaded() = 0;
+    // Notification called when all outstanding pending requests are complete.
+    virtual void OnPendingRequestComplete() = 0;
+    // Notification called when new data is available.
+    virtual void OnNewDataAvailable() = 0;
+    // Notification called when document is fully loaded.
+    virtual void OnDocumentComplete() = 0;
+  };
+
+  explicit DocumentLoader(Client* client);
+  virtual ~DocumentLoader();
+
+  bool Init(const pp::URLLoader& loader,
+            const std::string& url,
+            const std::string& headers);
+
+  // Data access interface. Return true is sucessful.
+  bool GetBlock(uint32 position, uint32 size, void* buf) const;
+
+  // Data availability interface. Return true data avaialble.
+  bool IsDataAvailable(uint32 position, uint32 size) const;
+
+  // Data availability interface. Return true data avaialble.
+  void RequestData(uint32 position, uint32 size);
+
+  bool IsDocumentComplete() const;
+  uint32 document_size() const { return document_size_; }
+
+  // Return number of bytes available.
+  uint32 GetAvailableData() const;
+
+  // Clear pending requests from the queue.
+  void ClearPendingRequests();
+
+  bool is_partial_document() { return partial_document_; }
+
+ private:
+  // Called by the completion callback of the document's URLLoader.
+  void DidOpen(int32_t result);
+  // Call to read data from the document's URLLoader.
+  void ReadMore();
+  // Called by the completion callback of the document's URLLoader.
+  void DidRead(int32_t result);
+
+  // If the headers have a byte-range response, writes the start and end
+  // positions and returns true if at least the start position was parsed.
+  // The end position will be set to 0 if it was not found or parsed from the
+  // response.
+  // Returns false if not even a start position could be parsed.
+  static bool GetByteRange(const std::string& headers, uint32* start,
+                           uint32* end);
+
+  // If the headers have a multi-part response, returns the boundary name.
+  // Otherwise returns an empty string.
+  static std::string GetMultiPartBoundary(const std::string& headers);
+
+  // Called when we detect that partial document load is possible.
+  void LoadPartialDocument();
+  // Called when we have to load full document.
+  void LoadFullDocument();
+  // Download pending requests.
+  void DownloadPendingRequests();
+  // Called when we complete server request and read all data from it.
+  void ReadComplete();
+  // Creates request to download size byte of data data starting from position.
+  pp::URLRequestInfo GetRequest(uint32 position, uint32 size) const;
+  // Returns current request size in bytes.
+  uint32 GetRequestSize() const;
+
+  Client* client_;
+  std::string url_;
+  pp::URLLoader loader_;
+  pp::CompletionCallbackFactory<DocumentLoader> loader_factory_;
+  ChunkStream chunk_stream_;
+  bool partial_document_;
+  bool request_pending_;
+  typedef std::list<std::pair<size_t, size_t> > PendingRequests;
+  PendingRequests pending_requests_;
+  char buffer_[kDefaultRequestSize];
+  uint32 current_pos_;
+  uint32 current_chunk_size_;
+  uint32 current_chunk_read_;
+  uint32 document_size_;
+  bool header_request_;
+  bool is_multipart_;
+  std::string multipart_boundary_;
+  uint32 requests_count_;
+  std::list<std::vector<unsigned char> > chunk_buffer_;
+};
+
+}  // namespace chrome_pdf
+
+#endif  // PDF_DOCUMENT_LOADER_H_
diff --git a/xfa_test/pdf/draw_utils.cc b/xfa_test/pdf/draw_utils.cc
new file mode 100644
index 0000000000..d38be52aef
--- /dev/null
+++ b/xfa_test/pdf/draw_utils.cc
@@ -0,0 +1,343 @@
+// Copyright (c) 2011 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "pdf/draw_utils.h"
+
+#include <algorithm>
+#include <math.h>
+#include <vector>
+
+#include "base/logging.h"
+#include "base/numerics/safe_math.h"
+
+namespace chrome_pdf {
+
+inline uint8 GetBlue(const uint32& pixel) {
+  return static_cast<uint8>(pixel & 0xFF);
+}
+
+inline uint8 GetGreen(const uint32& pixel) {
+  return static_cast<uint8>((pixel >> 8) & 0xFF);
+}
+
+inline uint8 GetRed(const uint32& pixel) {
+  return static_cast<uint8>((pixel >> 16) & 0xFF);
+}
+
+inline uint8 GetAlpha(const uint32& pixel) {
+  return static_cast<uint8>((pixel >> 24) & 0xFF);
+}
+
+inline uint32_t MakePixel(uint8 red, uint8 green, uint8 blue, uint8 alpha) {
+  return (static_cast<uint32_t>(alpha) << 24) |
+      (static_cast<uint32_t>(red) << 16) |
+      (static_cast<uint32_t>(green) << 8) |
+      static_cast<uint32_t>(blue);
+}
+
+inline uint8 GradientChannel(uint8 start, uint8 end, double ratio) {
+  double new_channel = start - (static_cast<double>(start) - end) * ratio;
+  if (new_channel < 0)
+    return 0;
+  if (new_channel > 255)
+    return 255;
+  return static_cast<uint8>(new_channel + 0.5);
+}
+
+inline uint8 ProcessColor(uint8 src_color, uint8 dest_color, uint8 alpha) {
+  uint32 processed = static_cast<uint32>(src_color) * alpha +
+      static_cast<uint32>(dest_color) * (0xFF - alpha);
+  return static_cast<uint8>((processed / 0xFF) & 0xFF);
+}
+
+inline bool ImageDataContainsRect(const pp::ImageData& image_data,
+                                  const pp::Rect& rect) {
+  return rect.width() >= 0 && rect.height() >= 0 &&
+      pp::Rect(image_data.size()).Contains(rect);
+}
+
+void AlphaBlend(const pp::ImageData& src, const pp::Rect& src_rc,
+                pp::ImageData* dest, const pp::Point& dest_origin,
+                uint8 alpha_adjustment) {
+  if (src_rc.IsEmpty() || !ImageDataContainsRect(src, src_rc))
+    return;
+
+  pp::Rect dest_rc(dest_origin, src_rc.size());
+  if (dest_rc.IsEmpty() || !ImageDataContainsRect(*dest, dest_rc))
+    return;
+
+  const uint32_t* src_origin_pixel = src.GetAddr32(src_rc.point());
+  uint32_t* dest_origin_pixel = dest->GetAddr32(dest_origin);
+
+  int height = src_rc.height();
+  int width = src_rc.width();
+  for (int y = 0; y < height; y++) {
+    const uint32_t* src_pixel = src_origin_pixel;
+    uint32_t* dest_pixel = dest_origin_pixel;
+    for (int x = 0; x < width; x++) {
+      uint8 alpha = static_cast<uint8>(static_cast<uint32_t>(alpha_adjustment) *
+          GetAlpha(*src_pixel) / 0xFF);
+      uint8 red = ProcessColor(GetRed(*src_pixel), GetRed(*dest_pixel), alpha);
+      uint8 green = ProcessColor(GetGreen(*src_pixel),
+                                 GetGreen(*dest_pixel), alpha);
+      uint8 blue = ProcessColor(GetBlue(*src_pixel),
+                                GetBlue(*dest_pixel), alpha);
+      *dest_pixel = MakePixel(red, green, blue, GetAlpha(*dest_pixel));
+
+      src_pixel++;
+      dest_pixel++;
+    }
+    src_origin_pixel = reinterpret_cast<const uint32_t*>(
+        reinterpret_cast<const char*>(src_origin_pixel) + src.stride());
+    dest_origin_pixel = reinterpret_cast<uint32_t*>(
+        reinterpret_cast<char*>(dest_origin_pixel) + dest->stride());
+  }
+}
+
+void GradientFill(pp::ImageData* image, const pp::Rect& rc,
+                  uint32 start_color, uint32 end_color, bool horizontal) {
+  std::vector<uint32> colors;
+  colors.resize(horizontal ? rc.width() : rc.height());
+  for (size_t i = 0; i < colors.size(); ++i) {
+    double ratio = static_cast<double>(i) / colors.size();
+    colors[i] = MakePixel(
+        GradientChannel(GetRed(start_color), GetRed(end_color), ratio),
+        GradientChannel(GetGreen(start_color), GetGreen(end_color), ratio),
+        GradientChannel(GetBlue(start_color), GetBlue(end_color), ratio),
+        GradientChannel(GetAlpha(start_color), GetAlpha(end_color), ratio));
+  }
+
+  if (horizontal) {
+    const void* data = &(colors[0]);
+    size_t size = colors.size() * 4;
+    uint32_t* origin_pixel = image->GetAddr32(rc.point());
+    for (int y = 0; y < rc.height(); y++) {
+      memcpy(origin_pixel, data, size);
+      origin_pixel = reinterpret_cast<uint32_t*>(
+          reinterpret_cast<char*>(origin_pixel) + image->stride());
+    }
+  } else {
+    uint32_t* origin_pixel = image->GetAddr32(rc.point());
+    for (int y = 0; y < rc.height(); y++) {
+      uint32_t* pixel = origin_pixel;
+      for (int x = 0; x < rc.width(); x++) {
+        *pixel = colors[y];
+        pixel++;
+      }
+      origin_pixel = reinterpret_cast<uint32_t*>(
+          reinterpret_cast<char*>(origin_pixel) + image->stride());
+    }
+  }
+}
+
+void GradientFill(pp::Instance* instance,
+                  pp::ImageData* image,
+                  const pp::Rect& dirty_rc,
+                  const pp::Rect& gradient_rc,
+                  uint32 start_color,
+                  uint32 end_color,
+                  bool horizontal,
+                  uint8 transparency) {
+  pp::Rect draw_rc = gradient_rc.Intersect(dirty_rc);
+  if (draw_rc.IsEmpty())
+    return;
+
+  pp::ImageData gradient(instance, PP_IMAGEDATAFORMAT_BGRA_PREMUL,
+      gradient_rc.size(), false);
+
+  GradientFill(&gradient, pp::Rect(pp::Point(), gradient_rc.size()),
+               start_color, end_color, horizontal);
+
+  pp::Rect copy_rc(draw_rc);
+  copy_rc.Offset(-gradient_rc.x(), -gradient_rc.y());
+  AlphaBlend(gradient, copy_rc, image, draw_rc.point(), transparency);
+}
+
+void CopyImage(const pp::ImageData& src, const pp::Rect& src_rc,
+               pp::ImageData* dest, const pp::Rect& dest_rc,
+               bool stretch) {
+  if (src_rc.IsEmpty() || !ImageDataContainsRect(src, src_rc))
+    return;
+
+  pp::Rect stretched_rc(dest_rc.point(),
+                        stretch ? dest_rc.size() : src_rc.size());
+  if (stretched_rc.IsEmpty() || !ImageDataContainsRect(*dest, stretched_rc))
+    return;
+
+  const uint32_t* src_origin_pixel = src.GetAddr32(src_rc.point());
+  uint32_t* dest_origin_pixel = dest->GetAddr32(dest_rc.point());
+  if (stretch) {
+    double x_ratio = static_cast<double>(src_rc.width()) / dest_rc.width();
+    double y_ratio = static_cast<double>(src_rc.height()) / dest_rc.height();
+    int32_t height = dest_rc.height();
+    int32_t width = dest_rc.width();
+    for (int32_t y = 0; y < height; ++y) {
+      uint32_t* dest_pixel = dest_origin_pixel;
+      for (int32_t x = 0; x < width; ++x) {
+        uint32 src_x = static_cast<uint32>(x * x_ratio);
+        uint32 src_y = static_cast<uint32>(y * y_ratio);
+        const uint32_t* src_pixel = src.GetAddr32(
+            pp::Point(src_rc.x() + src_x, src_rc.y() + src_y));
+        *dest_pixel = *src_pixel;
+        dest_pixel++;
+      }
+      dest_origin_pixel = reinterpret_cast<uint32_t*>(
+          reinterpret_cast<char*>(dest_origin_pixel) + dest->stride());
+    }
+  } else {
+    int32_t height = src_rc.height();
+    base::CheckedNumeric<int32_t> width_bytes = src_rc.width();
+    width_bytes *= 4;
+    for (int32_t y = 0; y < height; ++y) {
+      memcpy(dest_origin_pixel, src_origin_pixel, width_bytes.ValueOrDie());
+      src_origin_pixel = reinterpret_cast<const uint32_t*>(
+          reinterpret_cast<const char*>(src_origin_pixel) + src.stride());
+      dest_origin_pixel = reinterpret_cast<uint32_t*>(
+          reinterpret_cast<char*>(dest_origin_pixel) + dest->stride());
+    }
+  }
+}
+
+void FillRect(pp::ImageData* image, const pp::Rect& rc, uint32 color) {
+  int height = rc.height();
+  if (height == 0)
+    return;
+
+  // Fill in first row.
+  uint32_t* top_line = image->GetAddr32(rc.point());
+  int width = rc.width();
+  for (int x = 0; x < width; x++)
+    top_line[x] = color;
+
+  // Fill in the rest of the rectangle.
+  int byte_width = width * 4;
+  uint32_t* cur_line = reinterpret_cast<uint32_t*>(
+          reinterpret_cast<char*>(top_line) + image->stride());
+  for (int y = 1; y < height; y++) {
+    memcpy(cur_line, top_line, byte_width);
+    cur_line = reinterpret_cast<uint32_t*>(
+            reinterpret_cast<char*>(cur_line) + image->stride());
+  }
+}
+
+ShadowMatrix::ShadowMatrix(uint32 depth, double factor, uint32 background)
+    : depth_(depth), factor_(factor), background_(background) {
+  DCHECK(depth_ > 0);
+  matrix_.resize(depth_ * depth_);
+
+  // pv - is a rounding power factor for smoothing corners.
+  // pv = 2.0 will make corners completely round.
+  const double pv = 4.0;
+  // pow_pv - cache to avoid recalculating pow(x, pv) every time.
+  std::vector<double> pow_pv(depth_, 0.0);
+
+  double r = static_cast<double>(depth_);
+  double coef = 256.0 / pow(r, factor);
+
+  for (uint32 y = 0; y < depth_; y++) {
+    // Since matrix is symmetrical, we can reduce the number of calculations
+    // by mirroring results.
+    for (uint32 x = 0; x <= y; x++) {
+      // Fill cache if needed.
+      if (pow_pv[x] == 0.0)
+        pow_pv[x] =  pow(x, pv);
+      if (pow_pv[y] == 0.0)
+        pow_pv[y] =  pow(y, pv);
+
+      // v - is a value for the smoothing function.
+      // If x == 0 simplify calculations.
+      double v = (x == 0) ? y : pow(pow_pv[x] + pow_pv[y], 1 / pv);
+
+      // Smoothing function.
+      // If factor == 1, smoothing will be linear from 0 to the end,
+      // if 0 < factor < 1, smoothing will drop faster near 0.
+      // if factor > 1, smoothing will drop faster near the end (depth).
+      double f = 256.0 - coef * pow(v, factor);
+
+      uint8 alpha = 0;
+      if (f > kOpaqueAlpha)
+        alpha = kOpaqueAlpha;
+      else if (f < kTransparentAlpha)
+        alpha = kTransparentAlpha;
+      else
+        alpha = static_cast<uint8>(f);
+
+      uint8 red = ProcessColor(0, GetRed(background), alpha);
+      uint8 green = ProcessColor(0, GetGreen(background), alpha);
+      uint8 blue = ProcessColor(0, GetBlue(background), alpha);
+      uint32 pixel = MakePixel(red, green, blue, GetAlpha(background));
+
+      // Mirror matrix.
+      matrix_[y * depth_ + x] = pixel;
+      matrix_[x * depth_ + y] = pixel;
+    }
+  }
+}
+
+ShadowMatrix::~ShadowMatrix() {
+}
+
+void PaintShadow(pp::ImageData* image,
+                 const pp::Rect& clip_rc,
+                 const pp::Rect& shadow_rc,
+                 const ShadowMatrix& matrix) {
+  pp::Rect draw_rc = shadow_rc.Intersect(clip_rc);
+  if (draw_rc.IsEmpty())
+    return;
+
+  int32 depth = static_cast<int32>(matrix.depth());
+  for (int32_t y = draw_rc.y(); y < draw_rc.bottom(); y++) {
+    for (int32_t x = draw_rc.x(); x < draw_rc.right(); x++) {
+      int32_t matrix_x = std::max(depth + shadow_rc.x() - x - 1,
+                                  depth - shadow_rc.right() + x);
+      int32_t matrix_y = std::max(depth + shadow_rc.y() - y - 1,
+                                  depth - shadow_rc.bottom() + y);
+      uint32_t* pixel = image->GetAddr32(pp::Point(x, y));
+
+      if (matrix_x < 0)
+        matrix_x = 0;
+      else if (matrix_x >= static_cast<int32>(depth))
+        matrix_x = depth - 1;
+
+      if (matrix_y < 0)
+        matrix_y = 0;
+      else if (matrix_y >= static_cast<int32>(depth))
+        matrix_y = depth - 1;
+
+      *pixel = matrix.GetValue(matrix_x, matrix_y);
+    }
+  }
+}
+
+void DrawShadow(pp::ImageData* image,
+                const pp::Rect& shadow_rc,
+                const pp::Rect& object_rc,
+                const pp::Rect& clip_rc,
+                const ShadowMatrix& matrix) {
+  if (shadow_rc == object_rc)
+    return;  // Nothing to paint.
+
+  // Fill top part.
+  pp::Rect rc(shadow_rc.point(),
+              pp::Size(shadow_rc.width(), object_rc.y() - shadow_rc.y()));
+  PaintShadow(image, rc.Intersect(clip_rc), shadow_rc, matrix);
+
+  // Fill bottom part.
+  rc = pp::Rect(shadow_rc.x(), object_rc.bottom(),
+                shadow_rc.width(), shadow_rc.bottom() - object_rc.bottom());
+  PaintShadow(image, rc.Intersect(clip_rc), shadow_rc, matrix);
+
+  // Fill left part.
+  rc = pp::Rect(shadow_rc.x(), object_rc.y(),
+                object_rc.x() - shadow_rc.x(), object_rc.height());
+  PaintShadow(image, rc.Intersect(clip_rc), shadow_rc, matrix);
+
+  // Fill right part.
+  rc = pp::Rect(object_rc.right(), object_rc.y(),
+                shadow_rc.right() - object_rc.right(), object_rc.height());
+  PaintShadow(image, rc.Intersect(clip_rc), shadow_rc, matrix);
+}
+
+}  // namespace chrome_pdf
+
diff --git a/xfa_test/pdf/draw_utils.h b/xfa_test/pdf/draw_utils.h
new file mode 100644
index 0000000000..eedf24f27d
--- /dev/null
+++ b/xfa_test/pdf/draw_utils.h
@@ -0,0 +1,94 @@
+// Copyright (c) 2011 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef PDF_DRAW_UTILS_H_
+#define PDF_DRAW_UTILS_H_
+
+#include <vector>
+
+#include "base/basictypes.h"
+#include "ppapi/cpp/image_data.h"
+#include "ppapi/cpp/rect.h"
+
+namespace chrome_pdf {
+
+const uint8 kOpaqueAlpha = 0xFF;
+const uint8 kTransparentAlpha = 0x00;
+
+void AlphaBlend(const pp::ImageData& src, const pp::Rect& src_rc,
+                pp::ImageData* dest, const pp::Point& dest_origin,
+                uint8 alpha_adjustment);
+
+// Fill rectangle with gradient horizontally or vertically. Start is a color of
+// top-left point of the rectangle, end color is a color of
+// top-right (horizontal==true) or bottom-left (horizontal==false) point.
+void GradientFill(pp::ImageData* image,
+                  const pp::Rect& rc,
+                  uint32 start_color,
+                  uint32 end_color,
+                  bool horizontal);
+
+// Fill dirty rectangle with gradient, where gradient color set for corners of
+// gradient rectangle. Parts of the dirty rect outside of gradient rect will
+// be unchanged.
+void GradientFill(pp::Instance* instance,
+                  pp::ImageData* image,
+                  const pp::Rect& dirty_rc,
+                  const pp::Rect& gradient_rc,
+                  uint32 start_color,
+                  uint32 end_color,
+                  bool horizontal,
+                  uint8 transparency);
+
+// Copy one image into another. If stretch is true, the result occupy the entire
+// dest_rc. If stretch is false, dest_rc.point will be used as an origin of the
+// result image. Copy will ignore all pixels with transparent alpha from the
+// source image.
+void CopyImage(const pp::ImageData& src, const pp::Rect& src_rc,
+               pp::ImageData* dest, const pp::Rect& dest_rc,
+               bool stretch);
+
+// Fill in rectangle with specified color.
+void FillRect(pp::ImageData* image, const pp::Rect& rc, uint32 color);
+
+// Shadow Matrix contains matrix for shadow rendering. To reduce amount of
+// calculations user may choose to cache matrix and reuse it if nothing changed.
+class ShadowMatrix {
+ public:
+  // Matrix parameters.
+  // depth - how big matrix should be. Shadow will go smoothly across the
+  // entire matrix from black to background color.
+  // If factor == 1, smoothing will be linear from 0 to the end (depth),
+  // if 0 < factor < 1, smoothing will drop faster near 0.
+  // if factor > 1, smoothing will drop faster near the end (depth).
+  ShadowMatrix(uint32 depth, double factor, uint32 background);
+
+  ~ShadowMatrix();
+
+  uint32 GetValue(int32 x, int32 y) const { return matrix_[y * depth_ + x]; }
+
+  uint32 depth() const { return depth_; }
+  double factor() const { return factor_; }
+  uint32 background() const { return background_; }
+
+ private:
+  uint32 depth_;
+  double factor_;
+  uint32 background_;
+  std::vector<uint32> matrix_;
+};
+
+// Draw shadow on the image using provided ShadowMatrix.
+// shadow_rc - rectangle occupied by shadow
+// object_rc - rectangle that drops the shadow
+// clip_rc - clipping region
+void DrawShadow(pp::ImageData* image,
+                const pp::Rect& shadow_rc,
+                const pp::Rect& object_rc,
+                const pp::Rect& clip_rc,
+                const ShadowMatrix& matrix);
+
+}  // namespace chrome_pdf
+
+#endif  // PDF_DRAW_UTILS_H_
diff --git a/xfa_test/pdf/fading_control.cc b/xfa_test/pdf/fading_control.cc
new file mode 100644
index 0000000000..7e4d8ef63e
--- /dev/null
+++ b/xfa_test/pdf/fading_control.cc
@@ -0,0 +1,75 @@
+// Copyright (c) 2012 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "pdf/fading_control.h"
+
+#include <math.h>
+
+#include "base/logging.h"
+#include "pdf/draw_utils.h"
+#include "pdf/resource_consts.h"
+
+namespace chrome_pdf {
+
+FadingControl::FadingControl()
+    : alpha_shift_(0), timer_id_(0) {
+}
+
+FadingControl::~FadingControl() {
+}
+
+void FadingControl::OnTimerFired(uint32 timer_id) {
+  if (timer_id == timer_id_) {
+    int32 new_alpha = transparency() + alpha_shift_;
+    if (new_alpha <= kTransparentAlpha) {
+      Show(false, true);
+      OnFadeOutComplete();
+      return;
+    }
+    if (new_alpha >= kOpaqueAlpha) {
+      AdjustTransparency(kOpaqueAlpha, true);
+      OnFadeInComplete();
+      return;
+    }
+
+    AdjustTransparency(static_cast<uint8>(new_alpha), true);
+    timer_id_ = owner()->ScheduleTimer(id(), kFadingTimeoutMs);
+  }
+}
+
+// Fade In/Out control depending on visible flag over the time of time_ms.
+void FadingControl::Fade(bool show, uint32 time_ms) {
+  DCHECK(time_ms != 0);
+  // Check if we already in the same state.
+  if (!visible() && !show)
+    return;
+  if (!visible() && show) {
+    Show(show, false);
+    AdjustTransparency(kTransparentAlpha, false);
+    OnFadeOutComplete();
+  }
+  if (transparency() == kOpaqueAlpha && show) {
+    OnFadeInComplete();
+    return;
+  }
+
+  int delta = show ? kOpaqueAlpha - transparency() : transparency();
+  double shift =
+      static_cast<double>(delta) * kFadingTimeoutMs / time_ms;
+  if (shift > delta)
+    alpha_shift_ = delta;
+  else
+    alpha_shift_ = static_cast<int>(ceil(shift));
+
+  if (alpha_shift_ == 0)
+    alpha_shift_ = 1;
+
+  // If disabling, make alpha shift negative.
+  if (!show)
+    alpha_shift_ = -alpha_shift_;
+
+  timer_id_ = owner()->ScheduleTimer(id(), kFadingTimeoutMs);
+}
+
+}  // namespace chrome_pdf
diff --git a/xfa_test/pdf/fading_control.h b/xfa_test/pdf/fading_control.h
new file mode 100644
index 0000000000..03ac134698
--- /dev/null
+++ b/xfa_test/pdf/fading_control.h
@@ -0,0 +1,32 @@
+// Copyright (c) 2012 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef PDF_FADING_CONTROL_H_
+#define PDF_FADING_CONTROL_H_
+
+#include "pdf/control.h"
+
+namespace chrome_pdf {
+
+class FadingControl : public Control {
+ public:
+  FadingControl();
+  virtual ~FadingControl();
+
+  virtual void OnTimerFired(uint32 timer_id);
+
+  // Fade In/Out control depending on visible flag over the time of time_ms.
+  virtual void Fade(bool visible, uint32 time_ms);
+
+  virtual void OnFadeInComplete() {}
+  virtual void OnFadeOutComplete() {}
+
+ private:
+  int alpha_shift_;
+  uint32 timer_id_;
+};
+
+}  // namespace chrome_pdf
+
+#endif  // PDF_FADING_CONTROL_H_
diff --git a/xfa_test/pdf/fading_controls.cc b/xfa_test/pdf/fading_controls.cc
new file mode 100644
index 0000000000..8a9fd89510
--- /dev/null
+++ b/xfa_test/pdf/fading_controls.cc
@@ -0,0 +1,316 @@
+// Copyright (c) 2012 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "pdf/fading_controls.h"
+
+#include "base/logging.h"
+#include "base/stl_util.h"
+#include "pdf/draw_utils.h"
+#include "pdf/resource_consts.h"
+#include "ppapi/cpp/input_event.h"
+
+namespace chrome_pdf {
+
+const uint32 kFadingAlphaShift = 64;
+const uint32 kSplashFadingAlphaShift = 16;
+
+FadingControls::FadingControls()
+    : state_(NONE), current_transparency_(kOpaqueAlpha), fading_timer_id_(0),
+      current_capture_control_(kInvalidControlId),
+      fading_timeout_(kFadingTimeoutMs), alpha_shift_(kFadingAlphaShift),
+      splash_(false), splash_timeout_(0) {
+}
+
+FadingControls::~FadingControls() {
+  STLDeleteElements(&controls_);
+}
+
+bool FadingControls::CreateFadingControls(
+    uint32 id, const pp::Rect& rc, bool visible,
+    Control::Owner* owner, uint8 transparency) {
+  current_transparency_ = transparency;
+  return Control::Create(id, rc, visible, owner);
+}
+
+void FadingControls::Paint(pp::ImageData* image_data, const pp::Rect& rc) {
+  // When this control is set to invisible the individual controls are not.
+  // So we need to check for visible() here.
+  if (!visible())
+    return;
+
+  std::list<Control*>::iterator iter;
+  for (iter = controls_.begin(); iter != controls_.end(); ++iter) {
+    (*iter)->Paint(image_data, rc);
+  }
+}
+
+bool FadingControls::HandleEvent(const pp::InputEvent& event) {
+  if (!visible())
+    return false;
+
+  pp::MouseInputEvent mouse_event(event);
+  if (mouse_event.is_null())
+    return NotifyControls(event);
+
+  pp::Point pt = mouse_event.GetPosition();
+
+  bool is_mouse_click =
+      mouse_event.GetType() == PP_INPUTEVENT_TYPE_MOUSEDOWN ||
+      mouse_event.GetType() == PP_INPUTEVENT_TYPE_MOUSEUP;
+
+  if (rect().Contains(pt)) {
+    CancelSplashMode();
+    FadeIn();
+
+    // Eat mouse click if are invisible or just fading in.
+    // That prevents accidental clicks on the controls for touch devices.
+    bool eat_mouse_click =
+        (state_ == FADING_IN || current_transparency_ == kTransparentAlpha);
+    if (eat_mouse_click && is_mouse_click &&
+        mouse_event.GetButton() == PP_INPUTEVENT_MOUSEBUTTON_LEFT)
+      return true;  // Eat this event here.
+  }
+
+  if ((!rect().Contains(pt)) ||
+      event.GetType() == PP_INPUTEVENT_TYPE_MOUSELEAVE) {
+    if (!splash_)
+      FadeOut();
+    pp::MouseInputEvent event_leave(pp::MouseInputEvent(
+        owner()->GetInstance(),
+        PP_INPUTEVENT_TYPE_MOUSELEAVE,
+        event.GetTimeStamp(),
+        event.GetModifiers(),
+        mouse_event.GetButton(),
+        mouse_event.GetPosition(),
+        mouse_event.GetClickCount(),
+        mouse_event.GetMovement()));
+    return NotifyControls(event_leave);
+  }
+
+  return NotifyControls(event);
+}
+
+void FadingControls::OnTimerFired(uint32 timer_id) {
+  if (timer_id == fading_timer_id_) {
+    int32 current_alpha = static_cast<int32>(current_transparency_);
+    if (state_ == FADING_IN)
+      current_alpha += alpha_shift_;
+    else if (state_ == FADING_OUT)
+      current_alpha -= alpha_shift_;
+
+    if (current_alpha >= kOpaqueAlpha) {
+      state_ = NONE;
+      current_alpha = kOpaqueAlpha;
+    } else if (current_alpha <= kTransparentAlpha) {
+      state_ = NONE;
+      current_alpha = kTransparentAlpha;
+    }
+    current_transparency_ = static_cast<uint8>(current_alpha);
+
+    // Invalidate controls with new alpha transparency.
+    std::list<Control*>::iterator iter;
+    for (iter = controls_.begin(); iter != controls_.end(); ++iter) {
+      // We are going to invalidate the whole FadingControls area, to
+      // allow simultaneous drawing.
+      (*iter)->AdjustTransparency(current_transparency_, false);
+    }
+    owner()->Invalidate(id(), GetControlsRect());
+
+    if (state_ != NONE)  // Fading still in progress.
+      fading_timer_id_ = owner()->ScheduleTimer(id(), fading_timeout_);
+    else
+      OnFadingComplete();
+  } else {
+    // Dispatch timer to controls.
+    std::list<Control*>::iterator iter;
+    for (iter = controls_.begin(); iter != controls_.end(); ++iter) {
+      (*iter)->OnTimerFired(timer_id);
+    }
+  }
+}
+
+void FadingControls::EventCaptureReleased() {
+  if (current_capture_control_ != kInvalidControlId) {
+    // Remove previous catpure.
+    Control* ctrl = GetControl(current_capture_control_);
+    if (ctrl)
+      ctrl->EventCaptureReleased();
+  }
+}
+
+void FadingControls::MoveBy(const pp::Point& offset, bool invalidate) {
+  std::list<Control*>::iterator iter;
+  for (iter = controls_.begin(); iter != controls_.end(); ++iter) {
+    // We invalidate entire FadingControl later if needed.
+    (*iter)->MoveBy(offset, false);
+  }
+  Control::MoveBy(offset, invalidate);
+}
+
+void FadingControls::OnEvent(uint32 control_id, uint32 event_id, void* data) {
+  owner()->OnEvent(control_id, event_id, data);
+}
+
+void FadingControls::Invalidate(uint32 control_id, const pp::Rect& rc) {
+  owner()->Invalidate(control_id, rc);
+}
+
+uint32 FadingControls::ScheduleTimer(uint32 control_id, uint32 timeout_ms) {
+  // TODO(gene): implement timer routine properly.
+  NOTIMPLEMENTED();
+  //owner()->ScheduleTimer(control_id);
+  return 0;
+}
+
+void FadingControls::SetEventCapture(uint32 control_id, bool set_capture) {
+  if (control_id == current_capture_control_) {
+    if (!set_capture)  // Remove event capture.
+      current_capture_control_ = kInvalidControlId;
+  } else {
+    EventCaptureReleased();
+    current_capture_control_ = control_id;
+  }
+}
+
+void FadingControls::SetCursor(uint32 control_id,
+                               PP_CursorType_Dev cursor_type) {
+  owner()->SetCursor(control_id, cursor_type);
+}
+
+pp::Instance* FadingControls::GetInstance() {
+  return owner()->GetInstance();
+}
+
+bool FadingControls::AddControl(Control* control) {
+  DCHECK(control);
+  if (control->owner() != this)
+    return false;
+  if (!rect().Contains(control->rect()))
+    return false;
+
+  control->AdjustTransparency(current_transparency_, false);
+  controls_.push_back(control);
+  return true;
+}
+
+void FadingControls::RemoveControl(uint32 control_id) {
+  if (current_capture_control_ == control_id) {
+    current_capture_control_ = kInvalidControlId;
+  }
+  std::list<Control*>::iterator iter;
+  for (iter = controls_.begin(); iter != controls_.end(); ++iter) {
+    if ((*iter)->id() == control_id) {
+      delete (*iter);
+      controls_.erase(iter);
+      break;
+    }
+  }
+}
+
+Control* FadingControls::GetControl(uint32 id) {
+  std::list<Control*>::iterator iter;
+  for (iter = controls_.begin(); iter != controls_.end(); ++iter) {
+    if ((*iter)->id() == id)
+      return *iter;
+  }
+  return NULL;
+}
+
+pp::Rect FadingControls::GetControlsRect() {
+  pp::Rect rc;
+  std::list<Control*>::iterator iter;
+  for (iter = controls_.begin(); iter != controls_.end(); ++iter) {
+    rc = rc.Union((*iter)->rect());
+  }
+  return rc;
+}
+
+bool FadingControls::ExpandLeft(int offset) {
+  pp::Rect rc = rect();
+  rc.set_width(rc.width() + offset);
+  rc.set_x(rc.x() - offset);
+  if (!rc.Contains(GetControlsRect()))
+    return false;
+  // No need to invalidate since we are expanding triggering area only.
+  SetRect(rc, false);
+  return true;
+}
+
+void FadingControls::Splash(uint32 time_ms) {
+  splash_ = true;
+  splash_timeout_ = time_ms;
+  alpha_shift_ = kSplashFadingAlphaShift;
+  FadeIn();
+}
+
+bool FadingControls::NotifyControls(const pp::InputEvent& event) {
+  // First pass event to a control that current capture is set to.
+  Control* ctrl = GetControl(current_capture_control_);
+  if (ctrl) {
+    if (ctrl->HandleEvent(event))
+      return true;
+  }
+
+  std::list<Control*>::iterator iter;
+  for (iter = controls_.begin(); iter != controls_.end(); ++iter) {
+    // Now pass event to all control except control with capture,
+    // since we already passed to it above.
+    if ((*iter) != ctrl && (*iter)->HandleEvent(event))
+      return true;
+  }
+  return false;
+}
+
+void FadingControls::FadeIn() {
+  bool already_visible =
+      (state_ == NONE && current_transparency_ == kOpaqueAlpha);
+  if (state_ != FADING_IN && !already_visible) {
+    state_ = FADING_IN;
+    fading_timer_id_ = owner()->ScheduleTimer(id(), fading_timeout_);
+  }
+  if (already_visible)
+    OnFadingComplete();
+}
+
+void FadingControls::FadeOut() {
+  bool already_invisible =
+      (state_ == NONE && current_transparency_ == kTransparentAlpha);
+  if (state_ != FADING_OUT && !already_invisible) {
+    state_ = FADING_OUT;
+    fading_timer_id_ = owner()->ScheduleTimer(id(), fading_timeout_);
+  }
+  if (already_invisible)
+    OnFadingComplete();
+}
+
+void FadingControls::OnFadingComplete() {
+  DCHECK(current_transparency_ == kOpaqueAlpha ||
+      current_transparency_ == kTransparentAlpha);
+  // In the splash mode following states are possible:
+  // Fade-in complete: splash_==true, splash_timeout_ != 0
+  //   We need to schedule timer for splash_timeout_.
+  // Splash timeout complete: splash_==true, splash_timeout_ == 0
+  //   We need to fade out still using splash settings.
+  // Fade-out complete: current_transparency_ == kTransparentAlpha
+  //   We need to cancel splash mode and go back to normal settings.
+  if (splash_) {
+    if (current_transparency_ == kOpaqueAlpha) {
+      if (splash_timeout_) {
+        fading_timer_id_ = owner()->ScheduleTimer(id(), splash_timeout_);
+        splash_timeout_ = 0;
+      } else {
+        FadeOut();
+      }
+    } else {
+      CancelSplashMode();
+    }
+  }
+}
+
+void FadingControls::CancelSplashMode() {
+  splash_ = false;
+  alpha_shift_ = kFadingAlphaShift;
+}
+
+}  // namespace chrome_pdf
diff --git a/xfa_test/pdf/fading_controls.h b/xfa_test/pdf/fading_controls.h
new file mode 100644
index 0000000000..532464b473
--- /dev/null
+++ b/xfa_test/pdf/fading_controls.h
@@ -0,0 +1,84 @@
+// Copyright (c) 2010 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef PDF_FADING_CONTROLS_H_
+#define PDF_FADING_CONTROLS_H_
+
+#include <list>
+
+#include "pdf/control.h"
+
+namespace chrome_pdf {
+
+class FadingControls : public Control,
+                       public ControlOwner {
+ public:
+  enum FadingState {
+    NONE,
+    FADING_IN,
+    FADING_OUT
+  };
+
+  FadingControls();
+  virtual ~FadingControls();
+  virtual bool CreateFadingControls(
+      uint32 id, const pp::Rect& rc, bool visible,
+      Control::Owner* delegate, uint8 transparency);
+
+  // Control interface.
+  virtual void Paint(pp::ImageData* image_data, const pp::Rect& rc);
+  virtual bool HandleEvent(const pp::InputEvent& event);
+  virtual void OnTimerFired(uint32 timer_id);
+  virtual void EventCaptureReleased();
+  virtual void MoveBy(const pp::Point& offset, bool invalidate);
+
+  // ControlOwner interface.
+  virtual void OnEvent(uint32 control_id, uint32 event_id, void* data);
+  virtual void Invalidate(uint32 control_id, const pp::Rect& rc);
+  virtual uint32 ScheduleTimer(uint32 control_id, uint32 timeout_ms);
+  virtual void SetEventCapture(uint32 control_id, bool set_capture);
+  virtual void SetCursor(uint32 control_id, PP_CursorType_Dev cursor_type);
+  virtual pp::Instance* GetInstance();
+
+  // FadingControls interface
+  // This function takes ownership of the control, and will destoy it
+  // when control is destroyed.
+  // Input control MUST be located inside FadingControls boundaries, and has
+  // this instance of FadingControls as a delegate.
+  virtual bool AddControl(Control* control);
+  virtual void RemoveControl(uint32 control_id);
+  virtual Control* GetControl(uint32 id);
+  virtual pp::Rect GetControlsRect();
+
+  // Expand/Shrink area which triggers inner control appearance to the left.
+  virtual bool ExpandLeft(int offset);
+
+  // Fade-in, then show controls for time_ms, and then fade-out. Any mouse
+  // event in this control area will interrupt splash mode.
+  virtual void Splash(uint32 time_ms);
+
+  uint8 current_transparency() const { return current_transparency_; }
+
+ private:
+  bool NotifyControls(const pp::InputEvent& event);
+  void FadeIn();
+  void FadeOut();
+  void OnFadingComplete();
+  void CancelSplashMode();
+
+  std::list<Control*> controls_;
+  FadingState state_;
+  uint8 current_transparency_;
+  uint32 fading_timer_id_;
+  uint32 current_capture_control_;
+  uint32 fading_timeout_;
+  uint32 alpha_shift_;
+  bool splash_;
+  uint32 splash_timeout_;
+};
+
+}  // namespace chrome_pdf
+
+#endif  // PDF_FADING_CONTROLS_H_
+
diff --git a/xfa_test/pdf/instance.cc b/xfa_test/pdf/instance.cc
new file mode 100644
index 0000000000..4bd2f787df
--- /dev/null
+++ b/xfa_test/pdf/instance.cc
@@ -0,0 +1,2778 @@
+// Copyright (c) 2012 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "pdf/instance.h"
+
+#include <algorithm>  // for min()
+#define _USE_MATH_DEFINES  // for M_PI
+#include <cmath>      // for log() and pow()
+#include <math.h>
+#include <list>
+
+#include "base/json/json_reader.h"
+#include "base/json/json_writer.h"
+#include "base/logging.h"
+#include "base/strings/string_number_conversions.h"
+#include "base/strings/string_split.h"
+#include "base/strings/string_util.h"
+#include "base/values.h"
+#include "chrome/browser/chrome_page_zoom_constants.h"
+#include "chrome/common/content_restriction.h"
+#include "content/public/common/page_zoom.h"
+#include "net/base/escape.h"
+#include "pdf/draw_utils.h"
+#include "pdf/number_image_generator.h"
+#include "pdf/pdf.h"
+#include "pdf/resource_consts.h"
+#include "ppapi/c/dev/ppb_cursor_control_dev.h"
+#include "ppapi/c/pp_errors.h"
+#include "ppapi/c/pp_rect.h"
+#include "ppapi/c/private/ppp_pdf.h"
+#include "ppapi/c/trusted/ppb_url_loader_trusted.h"
+#include "ppapi/cpp/core.h"
+#include "ppapi/cpp/dev/font_dev.h"
+#include "ppapi/cpp/dev/memory_dev.h"
+#include "ppapi/cpp/dev/text_input_dev.h"
+#include "ppapi/cpp/module.h"
+#include "ppapi/cpp/point.h"
+#include "ppapi/cpp/private/pdf.h"
+#include "ppapi/cpp/rect.h"
+#include "ppapi/cpp/resource.h"
+#include "ppapi/cpp/url_request_info.h"
+#include "ui/events/keycodes/keyboard_codes.h"
+
+#if defined(OS_MACOSX)
+#include "base/mac/mac_util.h"
+#endif
+
+namespace chrome_pdf {
+
+struct ToolbarButtonInfo {
+  uint32 id;
+  Button::ButtonStyle style;
+  PP_ResourceImage normal;
+  PP_ResourceImage highlighted;
+  PP_ResourceImage pressed;
+};
+
+namespace {
+
+// Uncomment following #define to enable thumbnails.
+// #define ENABLE_THUMBNAILS
+
+const uint32 kToolbarSplashTimeoutMs = 6000;
+const uint32 kMessageTextColor = 0xFF575757;
+const uint32 kMessageTextSize = 22;
+const uint32 kProgressFadeTimeoutMs = 250;
+const uint32 kProgressDelayTimeoutMs = 1000;
+const uint32 kAutoScrollTimeoutMs = 50;
+const double kAutoScrollFactor = 0.2;
+
+// Javascript methods.
+const char kJSAccessibility[] = "accessibility";
+const char kJSDocumentLoadComplete[] = "documentLoadComplete";
+const char kJSGetHeight[] = "getHeight";
+const char kJSGetHorizontalScrollbarThickness[] =
+    "getHorizontalScrollbarThickness";
+const char kJSGetPageLocationNormalized[] = "getPageLocationNormalized";
+const char kJSGetSelectedText[] = "getSelectedText";
+const char kJSGetVerticalScrollbarThickness[] = "getVerticalScrollbarThickness";
+const char kJSGetWidth[] = "getWidth";
+const char kJSGetZoomLevel[] = "getZoomLevel";
+const char kJSGoToPage[] = "goToPage";
+const char kJSGrayscale[] = "grayscale";
+const char kJSLoadPreviewPage[] = "loadPreviewPage";
+const char kJSOnLoad[] = "onload";
+const char kJSOnPluginSizeChanged[] = "onPluginSizeChanged";
+const char kJSOnScroll[] = "onScroll";
+const char kJSPageXOffset[] = "pageXOffset";
+const char kJSPageYOffset[] = "pageYOffset";
+const char kJSPrintPreviewPageCount[] = "printPreviewPageCount";
+const char kJSReload[] = "reload";
+const char kJSRemovePrintButton[] = "removePrintButton";
+const char kJSResetPrintPreviewUrl[] = "resetPrintPreviewUrl";
+const char kJSSendKeyEvent[] = "sendKeyEvent";
+const char kJSSetPageNumbers[] = "setPageNumbers";
+const char kJSSetPageXOffset[] = "setPageXOffset";
+const char kJSSetPageYOffset[] = "setPageYOffset";
+const char kJSSetZoomLevel[] = "setZoomLevel";
+const char kJSZoomFitToHeight[] = "fitToHeight";
+const char kJSZoomFitToWidth[] = "fitToWidth";
+const char kJSZoomIn[] = "zoomIn";
+const char kJSZoomOut[] = "zoomOut";
+
+// URL reference parameters.
+// For more possible parameters, see RFC 3778 and the "PDF Open Parameters"
+// document from Adobe.
+const char kDelimiters[] = "#&";
+const char kNamedDest[] = "nameddest";
+const char kPage[] = "page";
+
+const char kChromePrint[] = "chrome://print/";
+
+// Dictionary Value key names for the document accessibility info
+const char kAccessibleNumberOfPages[] = "numberOfPages";
+const char kAccessibleLoaded[] = "loaded";
+const char kAccessibleCopyable[] = "copyable";
+
+const ToolbarButtonInfo kPDFToolbarButtons[] = {
+  { kFitToPageButtonId, Button::BUTTON_STATE,
+      PP_RESOURCEIMAGE_PDF_BUTTON_FTP,
+      PP_RESOURCEIMAGE_PDF_BUTTON_FTP_HOVER,
+      PP_RESOURCEIMAGE_PDF_BUTTON_FTP_PRESSED },
+  { kFitToWidthButtonId, Button::BUTTON_STATE,
+      PP_RESOURCEIMAGE_PDF_BUTTON_FTW,
+      PP_RESOURCEIMAGE_PDF_BUTTON_FTW_HOVER,
+      PP_RESOURCEIMAGE_PDF_BUTTON_FTW_PRESSED },
+  { kZoomOutButtonId, Button::BUTTON_CLICKABLE,
+      PP_RESOURCEIMAGE_PDF_BUTTON_ZOOMOUT,
+      PP_RESOURCEIMAGE_PDF_BUTTON_ZOOMOUT_HOVER,
+      PP_RESOURCEIMAGE_PDF_BUTTON_ZOOMOUT_PRESSED },
+  { kZoomInButtonId, Button::BUTTON_CLICKABLE,
+      PP_RESOURCEIMAGE_PDF_BUTTON_ZOOMIN,
+      PP_RESOURCEIMAGE_PDF_BUTTON_ZOOMIN_HOVER,
+      PP_RESOURCEIMAGE_PDF_BUTTON_ZOOMIN_PRESSED },
+  { kSaveButtonId, Button::BUTTON_CLICKABLE,
+      PP_RESOURCEIMAGE_PDF_BUTTON_SAVE,
+      PP_RESOURCEIMAGE_PDF_BUTTON_SAVE_HOVER,
+      PP_RESOURCEIMAGE_PDF_BUTTON_SAVE_PRESSED },
+  { kPrintButtonId, Button::BUTTON_CLICKABLE,
+      PP_RESOURCEIMAGE_PDF_BUTTON_PRINT,
+      PP_RESOURCEIMAGE_PDF_BUTTON_PRINT_HOVER,
+      PP_RESOURCEIMAGE_PDF_BUTTON_PRINT_PRESSED },
+};
+
+const ToolbarButtonInfo kPDFNoPrintToolbarButtons[] = {
+  { kFitToPageButtonId, Button::BUTTON_STATE,
+      PP_RESOURCEIMAGE_PDF_BUTTON_FTP,
+      PP_RESOURCEIMAGE_PDF_BUTTON_FTP_HOVER,
+      PP_RESOURCEIMAGE_PDF_BUTTON_FTP_PRESSED },
+  { kFitToWidthButtonId, Button::BUTTON_STATE,
+      PP_RESOURCEIMAGE_PDF_BUTTON_FTW,
+      PP_RESOURCEIMAGE_PDF_BUTTON_FTW_HOVER,
+      PP_RESOURCEIMAGE_PDF_BUTTON_FTW_PRESSED },
+  { kZoomOutButtonId, Button::BUTTON_CLICKABLE,
+      PP_RESOURCEIMAGE_PDF_BUTTON_ZOOMOUT,
+      PP_RESOURCEIMAGE_PDF_BUTTON_ZOOMOUT_HOVER,
+      PP_RESOURCEIMAGE_PDF_BUTTON_ZOOMOUT_PRESSED },
+  { kZoomInButtonId, Button::BUTTON_CLICKABLE,
+      PP_RESOURCEIMAGE_PDF_BUTTON_ZOOMIN,
+      PP_RESOURCEIMAGE_PDF_BUTTON_ZOOMIN_HOVER,
+      PP_RESOURCEIMAGE_PDF_BUTTON_ZOOMIN_PRESSED },
+  { kSaveButtonId, Button::BUTTON_CLICKABLE,
+      PP_RESOURCEIMAGE_PDF_BUTTON_SAVE,
+      PP_RESOURCEIMAGE_PDF_BUTTON_SAVE_HOVER,
+      PP_RESOURCEIMAGE_PDF_BUTTON_SAVE_PRESSED },
+  { kPrintButtonId, Button::BUTTON_CLICKABLE,
+      PP_RESOURCEIMAGE_PDF_BUTTON_PRINT_DISABLED,
+      PP_RESOURCEIMAGE_PDF_BUTTON_PRINT_DISABLED,
+      PP_RESOURCEIMAGE_PDF_BUTTON_PRINT_DISABLED }
+};
+
+const ToolbarButtonInfo kPrintPreviewToolbarButtons[] = {
+  { kFitToPageButtonId, Button::BUTTON_STATE,
+      PP_RESOURCEIMAGE_PDF_BUTTON_FTP,
+      PP_RESOURCEIMAGE_PDF_BUTTON_FTP_HOVER,
+      PP_RESOURCEIMAGE_PDF_BUTTON_FTP_PRESSED },
+  { kFitToWidthButtonId, Button::BUTTON_STATE,
+      PP_RESOURCEIMAGE_PDF_BUTTON_FTW,
+      PP_RESOURCEIMAGE_PDF_BUTTON_FTW_HOVER,
+      PP_RESOURCEIMAGE_PDF_BUTTON_FTW_PRESSED },
+  { kZoomOutButtonId, Button::BUTTON_CLICKABLE,
+      PP_RESOURCEIMAGE_PDF_BUTTON_ZOOMOUT,
+      PP_RESOURCEIMAGE_PDF_BUTTON_ZOOMOUT_HOVER,
+      PP_RESOURCEIMAGE_PDF_BUTTON_ZOOMOUT_PRESSED },
+  { kZoomInButtonId, Button::BUTTON_CLICKABLE,
+      PP_RESOURCEIMAGE_PDF_BUTTON_ZOOMIN_END,
+      PP_RESOURCEIMAGE_PDF_BUTTON_ZOOMIN_END_HOVER,
+      PP_RESOURCEIMAGE_PDF_BUTTON_ZOOMIN_END_PRESSED },
+};
+
+static const char kPPPPdfInterface[] = PPP_PDF_INTERFACE_1;
+
+PP_Var GetLinkAtPosition(PP_Instance instance, PP_Point point) {
+  pp::Var var;
+  void* object =
+      pp::Instance::GetPerInstanceObject(instance, kPPPPdfInterface);
+  if (object)
+    var = static_cast<Instance*>(object)->GetLinkAtPosition(pp::Point(point));
+  return var.Detach();
+}
+
+void Transform(PP_Instance instance, PP_PrivatePageTransformType type) {
+  void* object =
+      pp::Instance::GetPerInstanceObject(instance, kPPPPdfInterface);
+  if (object) {
+    Instance* obj_instance = static_cast<Instance*>(object);
+    switch (type) {
+      case PP_PRIVATEPAGETRANSFORMTYPE_ROTATE_90_CW:
+        obj_instance->RotateClockwise();
+        break;
+      case PP_PRIVATEPAGETRANSFORMTYPE_ROTATE_90_CCW:
+        obj_instance->RotateCounterclockwise();
+        break;
+    }
+  }
+}
+
+const PPP_Pdf ppp_private = {
+  &GetLinkAtPosition,
+  &Transform
+};
+
+int ExtractPrintPreviewPageIndex(const std::string& src_url) {
+  // Sample |src_url| format: chrome://print/id/page_index/print.pdf
+  std::vector<std::string> url_substr;
+  base::SplitString(src_url.substr(strlen(kChromePrint)), '/', &url_substr);
+  if (url_substr.size() != 3)
+    return -1;
+
+  if (url_substr[2] != "print.pdf")
+    return -1;
+
+  int page_index = 0;
+  if (!base::StringToInt(url_substr[1], &page_index))
+    return -1;
+  return page_index;
+}
+
+bool IsPrintPreviewUrl(const std::string& url) {
+  return url.substr(0, strlen(kChromePrint)) == kChromePrint;
+}
+
+void ScalePoint(float scale, pp::Point* point) {
+  point->set_x(static_cast<int>(point->x() * scale));
+  point->set_y(static_cast<int>(point->y() * scale));
+}
+
+void ScaleRect(float scale, pp::Rect* rect) {
+  int left = static_cast<int>(floorf(rect->x() * scale));
+  int top = static_cast<int>(floorf(rect->y() * scale));
+  int right = static_cast<int>(ceilf((rect->x() + rect->width()) * scale));
+  int bottom = static_cast<int>(ceilf((rect->y() + rect->height()) * scale));
+  rect->SetRect(left, top, right - left, bottom - top);
+}
+
+template<class T>
+T ClipToRange(T value, T lower_boundary, T upper_boundary) {
+  DCHECK(lower_boundary <= upper_boundary);
+  return std::max<T>(lower_boundary, std::min<T>(value, upper_boundary));
+}
+
+}  // namespace
+
+Instance::Instance(PP_Instance instance)
+    : pp::InstancePrivate(instance),
+      pp::Find_Private(this),
+      pp::Printing_Dev(this),
+      pp::Selection_Dev(this),
+      pp::WidgetClient_Dev(this),
+      pp::Zoom_Dev(this),
+      cursor_(PP_CURSORTYPE_POINTER),
+      timer_pending_(false),
+      current_timer_id_(0),
+      zoom_(1.0),
+      device_scale_(1.0),
+      printing_enabled_(true),
+      hidpi_enabled_(false),
+      full_(IsFullFrame()),
+      zoom_mode_(full_ ? ZOOM_AUTO : ZOOM_SCALE),
+      did_call_start_loading_(false),
+      is_autoscroll_(false),
+      scrollbar_thickness_(-1),
+      scrollbar_reserved_thickness_(-1),
+      current_tb_info_(NULL),
+      current_tb_info_size_(0),
+      paint_manager_(this, this, true),
+      delayed_progress_timer_id_(0),
+      first_paint_(true),
+      painted_first_page_(false),
+      show_page_indicator_(false),
+      document_load_state_(LOAD_STATE_LOADING),
+      preview_document_load_state_(LOAD_STATE_COMPLETE),
+      told_browser_about_unsupported_feature_(false),
+      print_preview_page_count_(0) {
+  loader_factory_.Initialize(this);
+  timer_factory_.Initialize(this);
+  form_factory_.Initialize(this);
+  callback_factory_.Initialize(this);
+  engine_.reset(PDFEngine::Create(this));
+  pp::Module::Get()->AddPluginInterface(kPPPPdfInterface, &ppp_private);
+  AddPerInstanceObject(kPPPPdfInterface, this);
+
+  RequestFilteringInputEvents(PP_INPUTEVENT_CLASS_MOUSE);
+  RequestFilteringInputEvents(PP_INPUTEVENT_CLASS_WHEEL);
+  RequestFilteringInputEvents(PP_INPUTEVENT_CLASS_KEYBOARD);
+  RequestFilteringInputEvents(PP_INPUTEVENT_CLASS_TOUCH);
+}
+
+Instance::~Instance() {
+  if (timer_pending_) {
+    timer_factory_.CancelAll();
+    timer_pending_ = false;
+  }
+  // The engine may try to access this instance during its destruction.
+  // Make sure this happens early while the instance is still intact.
+  engine_.reset();
+  RemovePerInstanceObject(kPPPPdfInterface, this);
+}
+
+bool Instance::Init(uint32_t argc, const char* argn[], const char* argv[]) {
+  // For now, we hide HiDPI support behind a flag.
+  if (pp::PDF::IsFeatureEnabled(this, PP_PDFFEATURE_HIDPI))
+    hidpi_enabled_ = true;
+
+  printing_enabled_ = pp::PDF::IsFeatureEnabled(this, PP_PDFFEATURE_PRINTING);
+  if (printing_enabled_) {
+    CreateToolbar(kPDFToolbarButtons, arraysize(kPDFToolbarButtons));
+  } else {
+    CreateToolbar(kPDFNoPrintToolbarButtons,
+                  arraysize(kPDFNoPrintToolbarButtons));
+  }
+
+  CreateProgressBar();
+
+  // Load autoscroll anchor image.
+  autoscroll_anchor_ =
+      CreateResourceImage(PP_RESOURCEIMAGE_PDF_PAN_SCROLL_ICON);
+
+#ifdef ENABLE_THUMBNAILS
+  CreateThumbnails();
+#endif
+  const char* url = NULL;
+  for (uint32_t i = 0; i < argc; ++i) {
+    if (strcmp(argn[i], "src") == 0) {
+      url = argv[i];
+      break;
+    }
+  }
+
+  if (!url)
+    return false;
+
+  CreatePageIndicator(IsPrintPreviewUrl(url));
+
+  if (!full_) {
+    // For PDFs embedded in a frame, we don't get the data automatically like we
+    // do for full-frame loads.  Start loading the data manually.
+    LoadUrl(url);
+  } else {
+    DCHECK(!did_call_start_loading_);
+    pp::PDF::DidStartLoading(this);
+    did_call_start_loading_ = true;
+  }
+
+  ZoomLimitsChanged(kMinZoom, kMaxZoom);
+
+  text_input_.reset(new pp::TextInput_Dev(this));
+
+  url_ = url;
+  return engine_->New(url);
+}
+
+bool Instance::HandleDocumentLoad(const pp::URLLoader& loader) {
+  delayed_progress_timer_id_ = ScheduleTimer(kProgressBarId,
+                                             kProgressDelayTimeoutMs);
+  return engine_->HandleDocumentLoad(loader);
+}
+
+bool Instance::HandleInputEvent(const pp::InputEvent& event) {
+  // To simplify things, convert the event into device coordinates if it is
+  // a mouse event.
+  pp::InputEvent event_device_res(event);
+  {
+    pp::MouseInputEvent mouse_event(event);
+    if (!mouse_event.is_null()) {
+      pp::Point point = mouse_event.GetPosition();
+      pp::Point movement = mouse_event.GetMovement();
+      ScalePoint(device_scale_, &point);
+      ScalePoint(device_scale_, &movement);
+      mouse_event = pp::MouseInputEvent(
+          this,
+          event.GetType(),
+          event.GetTimeStamp(),
+          event.GetModifiers(),
+          mouse_event.GetButton(),
+          point,
+          mouse_event.GetClickCount(),
+          movement);
+      event_device_res = mouse_event;
+    }
+  }
+
+  // Check if we need to go to autoscroll mode.
+  if (event.GetType() == PP_INPUTEVENT_TYPE_MOUSEMOVE &&
+     (event.GetModifiers() & PP_INPUTEVENT_MODIFIER_MIDDLEBUTTONDOWN)) {
+    pp::MouseInputEvent mouse_event(event_device_res);
+    pp::Point pos = mouse_event.GetPosition();
+    EnableAutoscroll(pos);
+    UpdateCursor(CalculateAutoscroll(pos));
+    return true;
+  } else {
+    // Quit autoscrolling on any other event.
+    DisableAutoscroll();
+  }
+
+#ifdef ENABLE_THUMBNAILS
+  if (event.GetType() == PP_INPUTEVENT_TYPE_MOUSELEAVE)
+    thumbnails_.SlideOut();
+
+  if (thumbnails_.HandleEvent(event_device_res))
+    return true;
+#endif
+
+  if (toolbar_->HandleEvent(event_device_res))
+    return true;
+
+#ifdef ENABLE_THUMBNAILS
+  if (v_scrollbar_.get() && event.GetType() == PP_INPUTEVENT_TYPE_MOUSEMOVE) {
+    pp::MouseInputEvent mouse_event(event);
+    pp::Point pt = mouse_event.GetPosition();
+    pp::Rect v_scrollbar_rc;
+    v_scrollbar_->GetLocation(&v_scrollbar_rc);
+    // There is a bug (https://bugs.webkit.org/show_bug.cgi?id=45208)
+    // in the webkit that makes event.u.mouse.button
+    // equal to PP_INPUTEVENT_MOUSEBUTTON_LEFT, even when no button is pressed.
+    // To work around this issue we use modifier for now, and will switch
+    // to button once the bug is fixed and webkit got merged back to our tree.
+    if (v_scrollbar_rc.Contains(pt) &&
+        (event.GetModifiers() & PP_INPUTEVENT_MODIFIER_LEFTBUTTONDOWN)) {
+      thumbnails_.SlideIn();
+    }
+
+    // When scrollbar is in the scrolling mode we should display thumbnails
+    // even the mouse is outside the thumbnail and scrollbar areas.
+    // If mouse is outside plugin area, we are still getting mouse move events
+    // while scrolling. See bug description for details:
+    // http://code.google.com/p/chromium/issues/detail?id=56444
+    if (!v_scrollbar_rc.Contains(pt) && thumbnails_.visible() &&
+        !(event.GetModifiers() & PP_INPUTEVENT_MODIFIER_LEFTBUTTONDOWN) &&
+        !thumbnails_.rect().Contains(pt)) {
+      thumbnails_.SlideOut();
+    }
+  }
+#endif
+
+  // Need to pass the event to the engine first, since if we're over an edit
+  // control we want it to get keyboard events (like space) instead of the
+  // scrollbar.
+  // TODO: will have to offset the mouse coordinates once we support bidi and
+  // there could be scrollbars on the left.
+  pp::InputEvent offset_event(event_device_res);
+  bool try_engine_first = true;
+  switch (offset_event.GetType()) {
+    case PP_INPUTEVENT_TYPE_MOUSEDOWN:
+    case PP_INPUTEVENT_TYPE_MOUSEUP:
+    case PP_INPUTEVENT_TYPE_MOUSEMOVE:
+    case PP_INPUTEVENT_TYPE_MOUSEENTER:
+    case PP_INPUTEVENT_TYPE_MOUSELEAVE: {
+      pp::MouseInputEvent mouse_event(event_device_res);
+      pp::MouseInputEvent mouse_event_dip(event);
+      pp::Point point = mouse_event.GetPosition();
+      point.set_x(point.x() - available_area_.x());
+      offset_event = pp::MouseInputEvent(
+          this,
+          event.GetType(),
+          event.GetTimeStamp(),
+          event.GetModifiers(),
+          mouse_event.GetButton(),
+          point,
+          mouse_event.GetClickCount(),
+          mouse_event.GetMovement());
+      if (!engine_->IsSelecting()) {
+        if (!IsOverlayScrollbar() &&
+            !available_area_.Contains(mouse_event.GetPosition())) {
+          try_engine_first = false;
+        } else if (IsOverlayScrollbar()) {
+          pp::Rect temp;
+          if ((v_scrollbar_.get() && v_scrollbar_->GetLocation(&temp) &&
+              temp.Contains(mouse_event_dip.GetPosition())) ||
+              (h_scrollbar_.get() && h_scrollbar_->GetLocation(&temp) &&
+              temp.Contains(mouse_event_dip.GetPosition()))) {
+            try_engine_first = false;
+          }
+        }
+      }
+      break;
+    }
+    default:
+      break;
+  }
+  if (try_engine_first && engine_->HandleEvent(offset_event))
+    return true;
+
+  // Left/Right arrows should scroll to the beginning of the Prev/Next page if
+  // there is no horizontal scroll bar.
+  // If fit-to-height, PgDown/PgUp should scroll to the beginning of the
+  // Prev/Next page. Spacebar / shift+spacebar should do the same.
+  if (v_scrollbar_.get() && event.GetType() == PP_INPUTEVENT_TYPE_KEYDOWN) {
+    pp::KeyboardInputEvent keyboard_event(event);
+    bool no_h_scrollbar = !h_scrollbar_.get();
+    uint32_t key_code = keyboard_event.GetKeyCode();
+    bool page_down = no_h_scrollbar && key_code == ui::VKEY_RIGHT;
+    bool page_up = no_h_scrollbar && key_code == ui::VKEY_LEFT;
+    if (zoom_mode_ == ZOOM_FIT_TO_PAGE) {
+      bool has_shift =
+          keyboard_event.GetModifiers() & PP_INPUTEVENT_MODIFIER_SHIFTKEY;
+      bool key_is_space = key_code == ui::VKEY_SPACE;
+      page_down |= key_is_space || key_code == ui::VKEY_NEXT;
+      page_up |= (key_is_space && has_shift) || (key_code == ui::VKEY_PRIOR);
+    }
+    if (page_down) {
+      int page = engine_->GetFirstVisiblePage();
+      if (page == -1)
+        return true;
+      // Engine calculates visible page including delimiter to the page size.
+      // We need to check here if the page itself is completely out of view and
+      // scroll to the next one in that case.
+      if (engine_->GetPageRect(page).bottom() * zoom_ <=
+          v_scrollbar_->GetValue())
+        page++;
+      ScrollToPage(page + 1);
+      UpdateCursor(PP_CURSORTYPE_POINTER);
+      return true;
+    } else if (page_up) {
+      int page = engine_->GetFirstVisiblePage();
+      if (page == -1)
+        return true;
+      if (engine_->GetPageRect(page).y() * zoom_ >= v_scrollbar_->GetValue())
+        page--;
+      ScrollToPage(page);
+      UpdateCursor(PP_CURSORTYPE_POINTER);
+      return true;
+    }
+  }
+
+  if (v_scrollbar_.get() && v_scrollbar_->HandleEvent(event)) {
+    UpdateCursor(PP_CURSORTYPE_POINTER);
+    return true;
+  }
+
+  if (h_scrollbar_.get() && h_scrollbar_->HandleEvent(event)) {
+    UpdateCursor(PP_CURSORTYPE_POINTER);
+    return true;
+  }
+
+  if (timer_pending_ &&
+      (event.GetType() == PP_INPUTEVENT_TYPE_MOUSEUP ||
+       event.GetType() == PP_INPUTEVENT_TYPE_MOUSEMOVE)) {
+    timer_factory_.CancelAll();
+    timer_pending_ = false;
+  } else if (event.GetType() == PP_INPUTEVENT_TYPE_MOUSEMOVE &&
+             engine_->IsSelecting()) {
+    bool set_timer = false;
+    pp::MouseInputEvent mouse_event(event);
+    if (v_scrollbar_.get() &&
+        (mouse_event.GetPosition().y() <= 0 ||
+         mouse_event.GetPosition().y() >= (plugin_dip_size_.height() - 1))) {
+      v_scrollbar_->ScrollBy(
+          PP_SCROLLBY_LINE, mouse_event.GetPosition().y() >= 0 ? 1: -1);
+      set_timer = true;
+    }
+    if (h_scrollbar_.get() &&
+        (mouse_event.GetPosition().x() <= 0 ||
+         mouse_event.GetPosition().x() >= (plugin_dip_size_.width() - 1))) {
+      h_scrollbar_->ScrollBy(PP_SCROLLBY_LINE,
+          mouse_event.GetPosition().x() >= 0 ? 1: -1);
+      set_timer = true;
+    }
+
+    if (set_timer) {
+      last_mouse_event_ = pp::MouseInputEvent(event);
+
+      pp::CompletionCallback callback =
+          timer_factory_.NewCallback(&Instance::OnTimerFired);
+      pp::Module::Get()->core()->CallOnMainThread(kDragTimerMs, callback);
+      timer_pending_ = true;
+    }
+  }
+
+  if (event.GetType() == PP_INPUTEVENT_TYPE_KEYDOWN) {
+    pp::KeyboardInputEvent keyboard_event(event);
+    const uint32 modifier = event.GetModifiers();
+    if (modifier & kDefaultKeyModifier) {
+      switch (keyboard_event.GetKeyCode()) {
+        case 'A':
+          engine_->SelectAll();
+          return true;
+      }
+    } else if (modifier & PP_INPUTEVENT_MODIFIER_CONTROLKEY) {
+      switch (keyboard_event.GetKeyCode()) {
+        case ui::VKEY_OEM_4:
+          // Left bracket.
+          engine_->RotateCounterclockwise();
+          return true;
+        case ui::VKEY_OEM_6:
+          // Right bracket.
+          engine_->RotateClockwise();
+          return true;
+      }
+    }
+  }
+
+  // Return true for unhandled clicks so the plugin takes focus.
+  return (event.GetType() == PP_INPUTEVENT_TYPE_MOUSEDOWN);
+}
+
+void Instance::DidChangeView(const pp::View& view) {
+  pp::Rect view_rect(view.GetRect());
+  float device_scale = 1.0f;
+  float old_device_scale = device_scale_;
+  if (hidpi_enabled_)
+    device_scale = view.GetDeviceScale();
+  pp::Size view_device_size(view_rect.width() * device_scale,
+                            view_rect.height() * device_scale);
+  if (view_device_size == plugin_size_ && device_scale == device_scale_)
+    return;  // We don't care about the position, only the size.
+
+  image_data_ = pp::ImageData();
+  device_scale_ = device_scale;
+  plugin_dip_size_ = view_rect.size();
+  plugin_size_ = view_device_size;
+
+  paint_manager_.SetSize(view_device_size, device_scale_);
+
+  image_data_ = pp::ImageData(this,
+                              PP_IMAGEDATAFORMAT_BGRA_PREMUL,
+                              plugin_size_,
+                              false);
+  if (image_data_.is_null()) {
+    DCHECK(plugin_size_.IsEmpty());
+    return;
+  }
+
+  // View dimensions changed, disable autoscroll (if it was enabled).
+  DisableAutoscroll();
+
+  OnGeometryChanged(zoom_, old_device_scale);
+}
+
+pp::Var Instance::GetInstanceObject() {
+  if (instance_object_.is_undefined()) {
+    PDFScriptableObject* object = new PDFScriptableObject(this);
+    // The pp::Var takes ownership of object here.
+    instance_object_ = pp::VarPrivate(this, object);
+  }
+
+  return instance_object_;
+}
+
+pp::Var Instance::GetLinkAtPosition(const pp::Point& point) {
+  pp::Point offset_point(point);
+  ScalePoint(device_scale_, &offset_point);
+  offset_point.set_x(offset_point.x() - available_area_.x());
+  return engine_->GetLinkAtPosition(offset_point);
+}
+
+pp::Var Instance::GetSelectedText(bool html) {
+  if (html || !engine_->HasPermission(PDFEngine::PERMISSION_COPY))
+    return pp::Var();
+  return engine_->GetSelectedText();
+}
+
+void Instance::InvalidateWidget(pp::Widget_Dev widget,
+                                const pp::Rect& dirty_rect) {
+  if (v_scrollbar_.get() && *v_scrollbar_ == widget) {
+    if (!image_data_.is_null())
+      v_scrollbar_->Paint(dirty_rect.pp_rect(), &image_data_);
+  } else if (h_scrollbar_.get() && *h_scrollbar_ == widget) {
+    if (!image_data_.is_null())
+      h_scrollbar_->Paint(dirty_rect.pp_rect(), &image_data_);
+  } else {
+    // Possible to hit this condition since sometimes the scrollbar codes posts
+    // a task to do something later, and we could have deleted our reference in
+    // the meantime.
+    return;
+  }
+
+  pp::Rect dirty_rect_scaled = dirty_rect;
+  ScaleRect(device_scale_, &dirty_rect_scaled);
+  paint_manager_.InvalidateRect(dirty_rect_scaled);
+}
+
+void Instance::ScrollbarValueChanged(pp::Scrollbar_Dev scrollbar,
+                                     uint32_t value) {
+  value = GetScaled(value);
+  if (v_scrollbar_.get() && *v_scrollbar_ == scrollbar) {
+    engine_->ScrolledToYPosition(value);
+    pp::Rect rc;
+    v_scrollbar_->GetLocation(&rc);
+    int32 doc_height = GetDocumentPixelHeight();
+    doc_height -= GetScaled(rc.height());
+#ifdef ENABLE_THUMBNAILS
+    if (thumbnails_.visible()) {
+      thumbnails_.SetPosition(value, doc_height, true);
+    }
+#endif
+    pp::Point origin(
+        plugin_size_.width() - page_indicator_.rect().width() -
+            GetScaled(GetScrollbarReservedThickness()),
+        page_indicator_.GetYPosition(value, doc_height, plugin_size_.height()));
+    page_indicator_.MoveTo(origin, page_indicator_.visible());
+  } else if (h_scrollbar_.get() && *h_scrollbar_ == scrollbar) {
+    engine_->ScrolledToXPosition(value);
+  }
+}
+
+void Instance::ScrollbarOverlayChanged(pp::Scrollbar_Dev scrollbar,
+                                       bool overlay) {
+  scrollbar_reserved_thickness_ = overlay ? 0 : scrollbar_thickness_;
+  OnGeometryChanged(zoom_, device_scale_);
+}
+
+uint32_t Instance::QuerySupportedPrintOutputFormats() {
+  return engine_->QuerySupportedPrintOutputFormats();
+}
+
+int32_t Instance::PrintBegin(const PP_PrintSettings_Dev& print_settings) {
+  // For us num_pages is always equal to the number of pages in the PDF
+  // document irrespective of the printable area.
+  int32_t ret = engine_->GetNumberOfPages();
+  if (!ret)
+    return 0;
+
+  uint32_t supported_formats = engine_->QuerySupportedPrintOutputFormats();
+  if ((print_settings.format & supported_formats) == 0)
+    return 0;
+
+  print_settings_.is_printing = true;
+  print_settings_.pepper_print_settings = print_settings;
+  engine_->PrintBegin();
+  return ret;
+}
+
+pp::Resource Instance::PrintPages(
+    const PP_PrintPageNumberRange_Dev* page_ranges,
+    uint32_t page_range_count) {
+  if (!print_settings_.is_printing)
+    return pp::Resource();
+
+  print_settings_.print_pages_called_ = true;
+  return engine_->PrintPages(page_ranges, page_range_count,
+                             print_settings_.pepper_print_settings);
+}
+
+void Instance::PrintEnd() {
+  if (print_settings_.print_pages_called_)
+    UserMetricsRecordAction("PDF.PrintPage");
+  print_settings_.Clear();
+  engine_->PrintEnd();
+}
+
+bool Instance::IsPrintScalingDisabled() {
+  return !engine_->GetPrintScaling();
+}
+
+bool Instance::StartFind(const std::string& text, bool case_sensitive) {
+  engine_->StartFind(text.c_str(), case_sensitive);
+  return true;
+}
+
+void Instance::SelectFindResult(bool forward) {
+  engine_->SelectFindResult(forward);
+}
+
+void Instance::StopFind() {
+  engine_->StopFind();
+}
+
+void Instance::Zoom(double scale, bool text_only) {
+  UserMetricsRecordAction("PDF.ZoomFromBrowser");
+
+  // If the zoom level doesn't change it means that this zoom change might have
+  // been initiated by the plugin. In that case, we don't want to change the
+  // zoom mode to ZOOM_SCALE as it may have been intentionally set to
+  // ZOOM_FIT_TO_PAGE or some other value when the zoom was last changed.
+  if (scale == zoom_)
+    return;
+
+  SetZoom(ZOOM_SCALE, scale);
+}
+
+void Instance::ZoomChanged(double factor) {
+  if (full_)
+    Zoom_Dev::ZoomChanged(factor);
+}
+
+void Instance::OnPaint(const std::vector<pp::Rect>& paint_rects,
+                       std::vector<PaintManager::ReadyRect>* ready,
+                       std::vector<pp::Rect>* pending) {
+  if (image_data_.is_null()) {
+    DCHECK(plugin_size_.IsEmpty());
+    return;
+  }
+  if (first_paint_) {
+    first_paint_ = false;
+    pp::Rect rect = pp::Rect(pp::Point(), plugin_size_);
+    FillRect(rect, kBackgroundColor);
+    ready->push_back(PaintManager::ReadyRect(rect, image_data_, true));
+    *pending = paint_rects;
+    return;
+  }
+
+  engine_->PrePaint();
+
+  for (size_t i = 0; i < paint_rects.size(); i++) {
+    // Intersect with plugin area since there could be pending invalidates from
+    // when the plugin area was larger.
+    pp::Rect rect =
+        paint_rects[i].Intersect(pp::Rect(pp::Point(), plugin_size_));
+    if (rect.IsEmpty())
+      continue;
+
+    pp::Rect pdf_rect = available_area_.Intersect(rect);
+    if (!pdf_rect.IsEmpty()) {
+      pdf_rect.Offset(available_area_.x() * -1, 0);
+
+      std::vector<pp::Rect> pdf_ready;
+      std::vector<pp::Rect> pdf_pending;
+      engine_->Paint(pdf_rect, &image_data_, &pdf_ready, &pdf_pending);
+      for (size_t j = 0; j < pdf_ready.size(); ++j) {
+        pdf_ready[j].Offset(available_area_.point());
+        ready->push_back(
+            PaintManager::ReadyRect(pdf_ready[j], image_data_, false));
+      }
+      for (size_t j = 0; j < pdf_pending.size(); ++j) {
+        pdf_pending[j].Offset(available_area_.point());
+        pending->push_back(pdf_pending[j]);
+      }
+    }
+
+    for (size_t j = 0; j < background_parts_.size(); ++j) {
+      pp::Rect intersection = background_parts_[j].location.Intersect(rect);
+      if (!intersection.IsEmpty()) {
+        FillRect(intersection, background_parts_[j].color);
+        ready->push_back(
+            PaintManager::ReadyRect(intersection, image_data_, false));
+      }
+    }
+
+    if (document_load_state_ == LOAD_STATE_FAILED) {
+      pp::Point top_center;
+      top_center.set_x(plugin_size_.width() / 2);
+      top_center.set_y(plugin_size_.height() / 2);
+      DrawText(top_center, PP_RESOURCESTRING_PDFLOAD_FAILED);
+    }
+
+#ifdef ENABLE_THUMBNAILS
+    thumbnails_.Paint(&image_data_, rect);
+#endif
+  }
+
+  engine_->PostPaint();
+
+  // Must paint scrollbars after the background parts, in case we have an
+  // overlay scrollbar that's over the background. We also do this in a separate
+  // loop because the scrollbar painting logic uses the signal of whether there
+  // are pending paints or not to figure out if it should draw right away or
+  // not.
+  for (size_t i = 0; i < paint_rects.size(); i++) {
+    PaintIfWidgetIntersects(h_scrollbar_.get(), paint_rects[i], ready, pending);
+    PaintIfWidgetIntersects(v_scrollbar_.get(), paint_rects[i], ready, pending);
+  }
+
+  if (progress_bar_.visible())
+    PaintOverlayControl(&progress_bar_, &image_data_, ready);
+
+  if (page_indicator_.visible())
+    PaintOverlayControl(&page_indicator_, &image_data_, ready);
+
+  if (toolbar_->current_transparency() != kTransparentAlpha)
+    PaintOverlayControl(toolbar_.get(), &image_data_, ready);
+
+  // Paint autoscroll anchor if needed.
+  if (is_autoscroll_) {
+    size_t limit = ready->size();
+    for (size_t i = 0; i < limit; i++) {
+      pp::Rect anchor_rect = autoscroll_rect_.Intersect((*ready)[i].rect);
+      if (!anchor_rect.IsEmpty()) {
+        pp::Rect draw_rc = pp::Rect(
+            pp::Point(anchor_rect.x() - autoscroll_rect_.x(),
+                      anchor_rect.y() - autoscroll_rect_.y()),
+            anchor_rect.size());
+        // Paint autoscroll anchor.
+        AlphaBlend(autoscroll_anchor_, draw_rc,
+                   &image_data_, anchor_rect.point(), kOpaqueAlpha);
+      }
+    }
+  }
+}
+
+void Instance::PaintOverlayControl(
+    Control* ctrl,
+    pp::ImageData* image_data,
+    std::vector<PaintManager::ReadyRect>* ready) {
+  // Make sure that we only paint overlay controls over an area that's ready,
+  // i.e. not pending.  Otherwise we'll mark the control rect as ready and
+  // it'll overwrite the pdf region.
+  std::list<pp::Rect> ctrl_rects;
+  for (size_t i = 0; i < ready->size(); i++) {
+    pp::Rect rc = ctrl->rect().Intersect((*ready)[i].rect);
+    if (!rc.IsEmpty())
+      ctrl_rects.push_back(rc);
+  }
+
+  if (!ctrl_rects.empty()) {
+    ctrl->PaintMultipleRects(image_data, ctrl_rects);
+
+    std::list<pp::Rect>::iterator iter;
+    for (iter = ctrl_rects.begin(); iter != ctrl_rects.end(); ++iter) {
+      ready->push_back(PaintManager::ReadyRect(*iter, *image_data, false));
+    }
+  }
+}
+
+void Instance::DidOpen(int32_t result) {
+  if (result == PP_OK) {
+    engine_->HandleDocumentLoad(embed_loader_);
+  } else if (result != PP_ERROR_ABORTED) {  // Can happen in tests.
+    NOTREACHED();
+  }
+}
+
+void Instance::DidOpenPreview(int32_t result) {
+  if (result == PP_OK) {
+    preview_engine_.reset(PDFEngine::Create(new PreviewModeClient(this)));
+    preview_engine_->HandleDocumentLoad(embed_preview_loader_);
+  } else {
+    NOTREACHED();
+  }
+}
+
+void Instance::PaintIfWidgetIntersects(
+    pp::Widget_Dev* widget,
+    const pp::Rect& rect,
+    std::vector<PaintManager::ReadyRect>* ready,
+    std::vector<pp::Rect>* pending) {
+  if (!widget)
+    return;
+
+  pp::Rect location;
+  if (!widget->GetLocation(&location))
+    return;
+
+  ScaleRect(device_scale_, &location);
+  location = location.Intersect(rect);
+  if (location.IsEmpty())
+    return;
+
+  if (IsOverlayScrollbar()) {
+    // If we're using overlay scrollbars, and there are pending paints under the
+    // scrollbar, don't update the scrollbar instantly. While it would be nice,
+    // we would need to double buffer the plugin area in order to make this
+    // work. This is because we'd need to always have a copy of what the pdf
+    // under the scrollbar looks like, and additionally we couldn't paint the
+    // pdf under the scrollbar if it's ready until we got the preceding flush.
+    // So in practice, it would make painting slower and introduce extra buffer
+    // copies for the general case.
+    for (size_t i = 0; i < pending->size(); ++i) {
+      if ((*pending)[i].Intersects(location))
+        return;
+    }
+
+    // Even if none of the pending paints are under the scrollbar, we never want
+    // to paint it if it's over the pdf if there are other pending paints.
+    // Otherwise different parts of the pdf plugin would display at different
+    // scroll offsets.
+    if (!pending->empty() && available_area_.Intersects(rect)) {
+      pending->push_back(location);
+      return;
+    }
+  }
+
+  pp::Rect location_dip = location;
+  ScaleRect(1.0f / device_scale_, &location_dip);
+
+  DCHECK(!image_data_.is_null());
+  widget->Paint(location_dip, &image_data_);
+
+  ready->push_back(PaintManager::ReadyRect(location, image_data_, true));
+}
+
+void Instance::OnTimerFired(int32_t) {
+  HandleInputEvent(last_mouse_event_);
+}
+
+void Instance::OnClientTimerFired(int32_t id) {
+  engine_->OnCallback(id);
+}
+
+void Instance::OnControlTimerFired(int32_t,
+                                   const uint32& control_id,
+                                   const uint32& timer_id) {
+  if (control_id == toolbar_->id()) {
+    toolbar_->OnTimerFired(timer_id);
+  } else if (control_id == progress_bar_.id()) {
+    if (timer_id == delayed_progress_timer_id_) {
+      if (document_load_state_ == LOAD_STATE_LOADING &&
+          !progress_bar_.visible()) {
+        progress_bar_.Fade(true, kProgressFadeTimeoutMs);
+      }
+      delayed_progress_timer_id_ = 0;
+    } else {
+      progress_bar_.OnTimerFired(timer_id);
+    }
+  } else if (control_id == kAutoScrollId) {
+    if (is_autoscroll_) {
+      if (autoscroll_x_ != 0 && h_scrollbar_.get()) {
+        h_scrollbar_->ScrollBy(PP_SCROLLBY_PIXEL, autoscroll_x_);
+      }
+      if (autoscroll_y_ != 0 && v_scrollbar_.get()) {
+        v_scrollbar_->ScrollBy(PP_SCROLLBY_PIXEL, autoscroll_y_);
+      }
+
+      // Reschedule timer.
+      ScheduleTimer(kAutoScrollId, kAutoScrollTimeoutMs);
+    }
+  } else if (control_id == kPageIndicatorId) {
+    page_indicator_.OnTimerFired(timer_id);
+  }
+#ifdef ENABLE_THUMBNAILS
+  else if (control_id == thumbnails_.id()) {
+    thumbnails_.OnTimerFired(timer_id);
+  }
+#endif
+}
+
+void Instance::CalculateBackgroundParts() {
+  background_parts_.clear();
+  int v_scrollbar_thickness =
+      GetScaled(v_scrollbar_.get() ? GetScrollbarReservedThickness() : 0);
+  int h_scrollbar_thickness =
+      GetScaled(h_scrollbar_.get() ? GetScrollbarReservedThickness() : 0);
+  int width_without_scrollbar = std::max(
+      plugin_size_.width() - v_scrollbar_thickness, 0);
+  int height_without_scrollbar = std::max(
+      plugin_size_.height() - h_scrollbar_thickness, 0);
+  int left_width = available_area_.x();
+  int right_start = available_area_.right();
+  int right_width = abs(width_without_scrollbar - available_area_.right());
+  int bottom = std::min(available_area_.bottom(), height_without_scrollbar);
+
+  // Add the left, right, and bottom rectangles.  Note: we assume only
+  // horizontal centering.
+  BackgroundPart part = {
+    pp::Rect(0, 0, left_width, bottom),
+    kBackgroundColor
+  };
+  if (!part.location.IsEmpty())
+    background_parts_.push_back(part);
+  part.location = pp::Rect(right_start, 0, right_width, bottom);
+  if (!part.location.IsEmpty())
+    background_parts_.push_back(part);
+  part.location = pp::Rect(
+      0, bottom, width_without_scrollbar, height_without_scrollbar - bottom);
+  if (!part.location.IsEmpty())
+    background_parts_.push_back(part);
+
+  if (h_scrollbar_thickness
+#if defined(OS_MACOSX)
+      ||
+#else
+      &&
+#endif
+      v_scrollbar_thickness) {
+    part.color = 0xFFFFFFFF;
+    part.location = pp::Rect(plugin_size_.width() - v_scrollbar_thickness,
+                             plugin_size_.height() - h_scrollbar_thickness,
+                             h_scrollbar_thickness,
+                             v_scrollbar_thickness);
+    background_parts_.push_back(part);
+  }
+}
+
+int Instance::GetDocumentPixelWidth() const {
+  return static_cast<int>(ceil(document_size_.width() * zoom_ * device_scale_));
+}
+
+int Instance::GetDocumentPixelHeight() const {
+  return static_cast<int>(ceil(document_size_.height() *
+                               zoom_ *
+                               device_scale_));
+}
+
+void Instance::FillRect(const pp::Rect& rect, uint32 color) {
+  DCHECK(!image_data_.is_null() || rect.IsEmpty());
+  uint32* buffer_start = static_cast<uint32*>(image_data_.data());
+  int stride = image_data_.stride();
+  uint32* ptr = buffer_start + rect.y() * stride / 4 + rect.x();
+  int height = rect.height();
+  int width = rect.width();
+  for (int y = 0; y < height; ++y) {
+    for (int x = 0; x < width; ++x)
+      *(ptr + x) = color;
+    ptr += stride / 4;
+  }
+}
+
+void Instance::DocumentSizeUpdated(const pp::Size& size) {
+  document_size_ = size;
+
+  OnGeometryChanged(zoom_, device_scale_);
+}
+
+void Instance::Invalidate(const pp::Rect& rect) {
+  pp::Rect offset_rect(rect);
+  offset_rect.Offset(available_area_.point());
+  paint_manager_.InvalidateRect(offset_rect);
+}
+
+void Instance::Scroll(const pp::Point& point) {
+  pp::Rect scroll_area = available_area_;
+  if (IsOverlayScrollbar()) {
+    pp::Rect rc;
+    if (h_scrollbar_.get()) {
+      h_scrollbar_->GetLocation(&rc);
+      ScaleRect(device_scale_, &rc);
+      if (scroll_area.bottom() > rc.y()) {
+        scroll_area.set_height(rc.y() - scroll_area.y());
+        paint_manager_.InvalidateRect(rc);
+      }
+    }
+    if (v_scrollbar_.get()) {
+      v_scrollbar_->GetLocation(&rc);
+      ScaleRect(device_scale_, &rc);
+      if (scroll_area.right() > rc.x()) {
+        scroll_area.set_width(rc.x() - scroll_area.x());
+        paint_manager_.InvalidateRect(rc);
+      }
+    }
+  }
+  paint_manager_.ScrollRect(scroll_area, point);
+
+  if (toolbar_->current_transparency() != kTransparentAlpha)
+    paint_manager_.InvalidateRect(toolbar_->GetControlsRect());
+
+  if (progress_bar_.visible())
+    paint_manager_.InvalidateRect(progress_bar_.rect());
+
+  if (is_autoscroll_)
+    paint_manager_.InvalidateRect(autoscroll_rect_);
+
+  if (show_page_indicator_) {
+    page_indicator_.set_current_page(GetPageNumberToDisplay());
+    page_indicator_.Splash();
+  }
+
+  if (page_indicator_.visible())
+    paint_manager_.InvalidateRect(page_indicator_.rect());
+
+  // Run the scroll callback asynchronously. This function can be invoked by a
+  // layout change which should not re-enter into JS synchronously.
+  pp::CompletionCallback callback =
+      callback_factory_.NewCallback(&Instance::RunCallback,
+                                    on_scroll_callback_);
+  pp::Module::Get()->core()->CallOnMainThread(0, callback);
+}
+
+void Instance::ScrollToX(int position) {
+  if (!h_scrollbar_.get()) {
+    NOTREACHED();
+    return;
+  }
+  int position_dip = static_cast<int>(position / device_scale_);
+  h_scrollbar_->SetValue(position_dip);
+}
+
+void Instance::ScrollToY(int position) {
+  if (!v_scrollbar_.get()) {
+    NOTREACHED();
+    return;
+  }
+  int position_dip = static_cast<int>(position / device_scale_);
+  v_scrollbar_->SetValue(ClipToRange(position_dip, 0, valid_v_range_));
+}
+
+void Instance::ScrollToPage(int page) {
+  if (!v_scrollbar_.get())
+    return;
+
+  if (engine_->GetNumberOfPages() == 0)
+    return;
+
+  int index = ClipToRange(page, 0, engine_->GetNumberOfPages() - 1);
+  pp::Rect rect = engine_->GetPageRect(index);
+  // If we are trying to scroll pass the last page,
+  // scroll to the end of the last page.
+  int position = index < page ? rect.bottom() : rect.y();
+  ScrollToY(position * zoom_ * device_scale_);
+}
+
+void Instance::NavigateTo(const std::string& url, bool open_in_new_tab) {
+  std::string url_copy(url);
+
+  // Empty |url_copy| is ok, and will effectively be a reload.
+  // Skip the code below so an empty URL does not turn into "http://", which
+  // will cause GURL to fail a DCHECK.
+  if (!url_copy.empty()) {
+    // If |url_copy| starts with '#', then it's for the same URL with a
+    // different URL fragment.
+    if (url_copy[0] == '#') {
+      url_copy = url_ + url_copy;
+      // Changing the href does not actually do anything when navigating in the
+      // same tab, so do the actual page scroll here. Then fall through so the
+      // href gets updated.
+      if (!open_in_new_tab) {
+        int page_number = GetInitialPage(url_copy);
+        if (page_number >= 0)
+          ScrollToPage(page_number);
+      }
+    }
+    // If there's no scheme, add http.
+    if (url_copy.find("://") == std::string::npos &&
+        url_copy.find("mailto:") == std::string::npos) {
+      url_copy = "http://" + url_copy;
+    }
+    // Make sure |url_copy| starts with a valid scheme.
+    if (url_copy.find("http://") != 0 &&
+        url_copy.find("https://") != 0 &&
+        url_copy.find("ftp://") != 0 &&
+        url_copy.find("file://") != 0 &&
+        url_copy.find("mailto:") != 0) {
+      return;
+    }
+    // Make sure |url_copy| is not only a scheme.
+    if (url_copy == "http://" ||
+        url_copy == "https://" ||
+        url_copy == "ftp://" ||
+        url_copy == "file://" ||
+        url_copy == "mailto:") {
+      return;
+    }
+  }
+  if (open_in_new_tab) {
+    GetWindowObject().Call("open", url_copy);
+  } else {
+    GetWindowObject().GetProperty("top").GetProperty("location").
+        SetProperty("href", url_copy);
+  }
+}
+
+void Instance::UpdateCursor(PP_CursorType_Dev cursor) {
+  if (cursor == cursor_)
+    return;
+  cursor_ = cursor;
+
+  const PPB_CursorControl_Dev* cursor_interface =
+      reinterpret_cast<const PPB_CursorControl_Dev*>(
+      pp::Module::Get()->GetBrowserInterface(PPB_CURSOR_CONTROL_DEV_INTERFACE));
+  if (!cursor_interface) {
+    NOTREACHED();
+    return;
+  }
+
+  cursor_interface->SetCursor(
+      pp_instance(), cursor_, pp::ImageData().pp_resource(), NULL);
+}
+
+void Instance::UpdateTickMarks(const std::vector<pp::Rect>& tickmarks) {
+  if (!v_scrollbar_.get())
+    return;
+
+  float inverse_scale = 1.0f / device_scale_;
+  std::vector<pp::Rect> scaled_tickmarks = tickmarks;
+  for (size_t i = 0; i < scaled_tickmarks.size(); i++) {
+    ScaleRect(inverse_scale, &scaled_tickmarks[i]);
+  }
+
+  v_scrollbar_->SetTickMarks(
+      scaled_tickmarks.empty() ? NULL : &scaled_tickmarks[0], tickmarks.size());
+}
+
+void Instance::NotifyNumberOfFindResultsChanged(int total, bool final_result) {
+  NumberOfFindResultsChanged(total, final_result);
+}
+
+void Instance::NotifySelectedFindResultChanged(int current_find_index) {
+  SelectedFindResultChanged(current_find_index);
+}
+
+void Instance::OnEvent(uint32 control_id, uint32 event_id, void* data) {
+  if (event_id == Button::EVENT_ID_BUTTON_CLICKED ||
+      event_id == Button::EVENT_ID_BUTTON_STATE_CHANGED) {
+    switch (control_id) {
+      case kFitToPageButtonId:
+        UserMetricsRecordAction("PDF.FitToPageButton");
+        SetZoom(ZOOM_FIT_TO_PAGE, 0);
+        ZoomChanged(zoom_);
+        break;
+      case kFitToWidthButtonId:
+        UserMetricsRecordAction("PDF.FitToWidthButton");
+        SetZoom(ZOOM_FIT_TO_WIDTH, 0);
+        ZoomChanged(zoom_);
+        break;
+      case kZoomOutButtonId:
+      case kZoomInButtonId:
+        UserMetricsRecordAction(control_id == kZoomOutButtonId ?
+            "PDF.ZoomOutButton" : "PDF.ZoomInButton");
+        SetZoom(ZOOM_SCALE, CalculateZoom(control_id));
+        ZoomChanged(zoom_);
+        break;
+      case kSaveButtonId:
+        UserMetricsRecordAction("PDF.SaveButton");
+        SaveAs();
+        break;
+      case kPrintButtonId:
+        UserMetricsRecordAction("PDF.PrintButton");
+        Print();
+        break;
+    }
+  }
+  if (control_id == kThumbnailsId &&
+      event_id == ThumbnailControl::EVENT_ID_THUMBNAIL_SELECTED) {
+    int page = *static_cast<int*>(data);
+    pp::Rect page_rc(engine_->GetPageRect(page));
+    ScrollToY(static_cast<int>(page_rc.y() * zoom_ * device_scale_));
+  }
+}
+
+void Instance::Invalidate(uint32 control_id, const pp::Rect& rc) {
+  paint_manager_.InvalidateRect(rc);
+}
+
+uint32 Instance::ScheduleTimer(uint32 control_id, uint32 timeout_ms) {
+  current_timer_id_++;
+  pp::CompletionCallback callback =
+      timer_factory_.NewCallback(&Instance::OnControlTimerFired,
+                                 control_id,
+                                 current_timer_id_);
+  pp::Module::Get()->core()->CallOnMainThread(timeout_ms, callback);
+  return current_timer_id_;
+}
+
+void Instance::SetEventCapture(uint32 control_id, bool set_capture) {
+  // TODO(gene): set event capture here.
+}
+
+void Instance::SetCursor(uint32 control_id, PP_CursorType_Dev cursor_type) {
+  UpdateCursor(cursor_type);
+}
+
+pp::Instance* Instance::GetInstance() {
+  return this;
+}
+
+void Instance::GetDocumentPassword(
+    pp::CompletionCallbackWithOutput<pp::Var> callback) {
+  std::string message(GetLocalizedString(PP_RESOURCESTRING_PDFGETPASSWORD));
+  pp::Var result = pp::PDF::ModalPromptForPassword(this, message);
+  *callback.output() = result.pp_var();
+  callback.Run(PP_OK);
+}
+
+void Instance::Alert(const std::string& message) {
+  GetWindowObject().Call("alert", message);
+}
+
+bool Instance::Confirm(const std::string& message) {
+  pp::Var result = GetWindowObject().Call("confirm", message);
+  return result.is_bool() ? result.AsBool() : false;
+}
+
+std::string Instance::Prompt(const std::string& question,
+                             const std::string& default_answer) {
+  pp::Var result = GetWindowObject().Call("prompt", question, default_answer);
+  return result.is_string() ? result.AsString() : std::string();
+}
+
+std::string Instance::GetURL() {
+  return url_;
+}
+
+void Instance::Email(const std::string& to,
+                     const std::string& cc,
+                     const std::string& bcc,
+                     const std::string& subject,
+                     const std::string& body) {
+  std::string javascript =
+      "var href = 'mailto:" + net::EscapeUrlEncodedData(to, false) +
+      "?cc=" + net::EscapeUrlEncodedData(cc, false) +
+      "&bcc=" + net::EscapeUrlEncodedData(bcc, false) +
+      "&subject=" + net::EscapeUrlEncodedData(subject, false) +
+      "&body=" + net::EscapeUrlEncodedData(body, false) +
+      "';var temp = window.open(href, '_blank', " +
+      "'width=1,height=1');if(temp) temp.close();";
+  ExecuteScript(javascript);
+}
+
+void Instance::Print() {
+  if (!printing_enabled_ ||
+      (!engine_->HasPermission(PDFEngine::PERMISSION_PRINT_LOW_QUALITY) &&
+       !engine_->HasPermission(PDFEngine::PERMISSION_PRINT_HIGH_QUALITY))) {
+    return;
+  }
+
+  pp::CompletionCallback callback =
+      callback_factory_.NewCallback(&Instance::OnPrint);
+  pp::Module::Get()->core()->CallOnMainThread(0, callback);
+}
+
+void Instance::OnPrint(int32_t) {
+  pp::PDF::Print(this);
+}
+
+void Instance::SaveAs() {
+  pp::PDF::SaveAs(this);
+}
+
+void Instance::SubmitForm(const std::string& url,
+                          const void* data,
+                          int length) {
+  pp::URLRequestInfo request(this);
+  request.SetURL(url);
+  request.SetMethod("POST");
+  request.AppendDataToBody(reinterpret_cast<const char*>(data), length);
+
+  pp::CompletionCallback callback =
+      form_factory_.NewCallback(&Instance::FormDidOpen);
+  form_loader_ = CreateURLLoaderInternal();
+  int rv = form_loader_.Open(request, callback);
+  if (rv != PP_OK_COMPLETIONPENDING)
+    callback.Run(rv);
+}
+
+void Instance::FormDidOpen(int32_t result) {
+  // TODO: inform the user of success/failure.
+  if (result != PP_OK) {
+    NOTREACHED();
+  }
+}
+
+std::string Instance::ShowFileSelectionDialog() {
+  // Seems like very low priority to implement, since the pdf has no way to get
+  // the file data anyways.  Javascript doesn't let you do this synchronously.
+  NOTREACHED();
+  return std::string();
+}
+
+pp::URLLoader Instance::CreateURLLoader() {
+  if (full_) {
+    if (!did_call_start_loading_) {
+      did_call_start_loading_ = true;
+      pp::PDF::DidStartLoading(this);
+    }
+
+    // Disable save and print until the document is fully loaded, since they
+    // would generate an incomplete document.  Need to do this each time we
+    // call DidStartLoading since that resets the content restrictions.
+    pp::PDF::SetContentRestriction(this, CONTENT_RESTRICTION_SAVE |
+                                   CONTENT_RESTRICTION_PRINT);
+  }
+
+  return CreateURLLoaderInternal();
+}
+
+void Instance::ScheduleCallback(int id, int delay_in_ms) {
+  pp::CompletionCallback callback =
+      timer_factory_.NewCallback(&Instance::OnClientTimerFired);
+  pp::Module::Get()->core()->CallOnMainThread(delay_in_ms, callback, id);
+}
+
+void Instance::SearchString(const base::char16* string,
+                            const base::char16* term,
+                            bool case_sensitive,
+                            std::vector<SearchStringResult>* results) {
+  if (!pp::PDF::IsAvailable()) {
+    NOTREACHED();
+    return;
+  }
+
+  PP_PrivateFindResult* pp_results;
+  int count = 0;
+  pp::PDF::SearchString(
+      this,
+      reinterpret_cast<const unsigned short*>(string),
+      reinterpret_cast<const unsigned short*>(term),
+      case_sensitive,
+      &pp_results,
+      &count);
+
+  results->resize(count);
+  for (int i = 0; i < count; ++i) {
+    (*results)[i].start_index = pp_results[i].start_index;
+    (*results)[i].length = pp_results[i].length;
+  }
+
+  pp::Memory_Dev memory;
+  memory.MemFree(pp_results);
+}
+
+void Instance::DocumentPaintOccurred() {
+  if (painted_first_page_)
+    return;
+
+  painted_first_page_ = true;
+  UpdateToolbarPosition(false);
+  toolbar_->Splash(kToolbarSplashTimeoutMs);
+
+  if (engine_->GetNumberOfPages() > 1)
+    show_page_indicator_ = true;
+  else
+    show_page_indicator_ = false;
+
+  if (v_scrollbar_.get() && show_page_indicator_) {
+    page_indicator_.set_current_page(GetPageNumberToDisplay());
+    page_indicator_.Splash(kToolbarSplashTimeoutMs,
+                           kPageIndicatorInitialFadeTimeoutMs);
+  }
+}
+
+void Instance::DocumentLoadComplete(int page_count) {
+  // Clear focus state for OSK.
+  FormTextFieldFocusChange(false);
+
+  // Update progress control.
+  if (progress_bar_.visible())
+    progress_bar_.Fade(false, kProgressFadeTimeoutMs);
+
+  DCHECK(document_load_state_ == LOAD_STATE_LOADING);
+  document_load_state_ = LOAD_STATE_COMPLETE;
+  UserMetricsRecordAction("PDF.LoadSuccess");
+
+  if (did_call_start_loading_) {
+    pp::PDF::DidStopLoading(this);
+    did_call_start_loading_ = false;
+  }
+
+  if (on_load_callback_.is_string())
+    ExecuteScript(on_load_callback_);
+  // Note: If we are in print preview mode on_load_callback_ might call
+  // ScrollTo{X|Y}() and we don't want to scroll again and override it.
+  // #page=N is not supported in Print Preview.
+  if (!IsPrintPreview()) {
+    int initial_page = GetInitialPage(url_);
+    if (initial_page >= 0)
+      ScrollToPage(initial_page);
+  }
+
+  if (!full_)
+    return;
+  if (!pp::PDF::IsAvailable())
+    return;
+
+  int content_restrictions =
+      CONTENT_RESTRICTION_CUT | CONTENT_RESTRICTION_PASTE;
+  if (!engine_->HasPermission(PDFEngine::PERMISSION_COPY))
+    content_restrictions |= CONTENT_RESTRICTION_COPY;
+
+  if (!engine_->HasPermission(PDFEngine::PERMISSION_PRINT_LOW_QUALITY) &&
+      !engine_->HasPermission(PDFEngine::PERMISSION_PRINT_HIGH_QUALITY)) {
+    printing_enabled_ = false;
+    if (current_tb_info_ == kPDFToolbarButtons) {
+      // Remove Print button.
+      CreateToolbar(kPDFNoPrintToolbarButtons,
+                    arraysize(kPDFNoPrintToolbarButtons));
+      UpdateToolbarPosition(false);
+      Invalidate(pp::Rect(plugin_size_));
+    }
+  }
+
+  pp::PDF::SetContentRestriction(this, content_restrictions);
+
+  pp::PDF::HistogramPDFPageCount(this, page_count);
+}
+
+void Instance::RotateClockwise() {
+  engine_->RotateClockwise();
+}
+
+void Instance::RotateCounterclockwise() {
+  engine_->RotateCounterclockwise();
+}
+
+void Instance::PreviewDocumentLoadComplete() {
+  if (preview_document_load_state_ != LOAD_STATE_LOADING ||
+      preview_pages_info_.empty()) {
+    return;
+  }
+
+  preview_document_load_state_ = LOAD_STATE_COMPLETE;
+
+  int dest_page_index = preview_pages_info_.front().second;
+  int src_page_index =
+      ExtractPrintPreviewPageIndex(preview_pages_info_.front().first);
+  if (src_page_index > 0 &&  dest_page_index > -1 && preview_engine_.get())
+    engine_->AppendPage(preview_engine_.get(), dest_page_index);
+
+  preview_pages_info_.pop();
+  // |print_preview_page_count_| is not updated yet. Do not load any
+  // other preview pages till we get this information.
+  if (print_preview_page_count_ == 0)
+    return;
+
+  if (preview_pages_info_.size())
+    LoadAvailablePreviewPage();
+}
+
+void Instance::DocumentLoadFailed() {
+  DCHECK(document_load_state_ == LOAD_STATE_LOADING);
+  UserMetricsRecordAction("PDF.LoadFailure");
+
+  // Hide progress control.
+  progress_bar_.Fade(false, kProgressFadeTimeoutMs);
+
+  if (did_call_start_loading_) {
+    pp::PDF::DidStopLoading(this);
+    did_call_start_loading_ = false;
+  }
+
+  document_load_state_ = LOAD_STATE_FAILED;
+  paint_manager_.InvalidateRect(pp::Rect(pp::Point(), plugin_size_));
+}
+
+void Instance::PreviewDocumentLoadFailed() {
+  UserMetricsRecordAction("PDF.PreviewDocumentLoadFailure");
+  if (preview_document_load_state_ != LOAD_STATE_LOADING ||
+      preview_pages_info_.empty()) {
+    return;
+  }
+
+  preview_document_load_state_ = LOAD_STATE_FAILED;
+  preview_pages_info_.pop();
+
+  if (preview_pages_info_.size())
+    LoadAvailablePreviewPage();
+}
+
+pp::Instance* Instance::GetPluginInstance() {
+  return GetInstance();
+}
+
+void Instance::DocumentHasUnsupportedFeature(const std::string& feature) {
+  std::string metric("PDF_Unsupported_");
+  metric += feature;
+  if (!unsupported_features_reported_.count(metric)) {
+    unsupported_features_reported_.insert(metric);
+    UserMetricsRecordAction(metric);
+  }
+
+  // Since we use an info bar, only do this for full frame plugins..
+  if (!full_)
+    return;
+
+  if (told_browser_about_unsupported_feature_)
+    return;
+  told_browser_about_unsupported_feature_ = true;
+
+  pp::PDF::HasUnsupportedFeature(this);
+}
+
+void Instance::DocumentLoadProgress(uint32 available, uint32 doc_size) {
+  double progress = 0.0;
+  if (doc_size == 0) {
+    // Document size is unknown. Use heuristics.
+    // We'll make progress logarithmic from 0 to 100M.
+    static const double kFactor = log(100000000.0) / 100.0;
+    if (available > 0) {
+      progress = log(static_cast<double>(available)) / kFactor;
+      if (progress > 100.0)
+        progress = 100.0;
+    }
+  } else {
+    progress = 100.0 * static_cast<double>(available) / doc_size;
+  }
+  progress_bar_.SetProgress(progress);
+}
+
+void Instance::FormTextFieldFocusChange(bool in_focus) {
+  if (!text_input_.get())
+    return;
+  if (in_focus)
+    text_input_->SetTextInputType(PP_TEXTINPUT_TYPE_DEV_TEXT);
+  else
+    text_input_->SetTextInputType(PP_TEXTINPUT_TYPE_DEV_NONE);
+}
+
+// Called by PDFScriptableObject.
+bool Instance::HasScriptableMethod(const pp::Var& method, pp::Var* exception) {
+  std::string method_str = method.AsString();
+  return (method_str == kJSAccessibility ||
+          method_str == kJSDocumentLoadComplete ||
+          method_str == kJSGetHeight ||
+          method_str == kJSGetHorizontalScrollbarThickness ||
+          method_str == kJSGetPageLocationNormalized ||
+          method_str == kJSGetSelectedText ||
+          method_str == kJSGetVerticalScrollbarThickness ||
+          method_str == kJSGetWidth ||
+          method_str == kJSGetZoomLevel ||
+          method_str == kJSGoToPage ||
+          method_str == kJSGrayscale ||
+          method_str == kJSLoadPreviewPage ||
+          method_str == kJSOnLoad ||
+          method_str == kJSOnPluginSizeChanged ||
+          method_str == kJSOnScroll ||
+          method_str == kJSPageXOffset ||
+          method_str == kJSPageYOffset ||
+          method_str == kJSPrintPreviewPageCount ||
+          method_str == kJSReload ||
+          method_str == kJSRemovePrintButton ||
+          method_str == kJSResetPrintPreviewUrl ||
+          method_str == kJSSendKeyEvent ||
+          method_str == kJSSetPageNumbers ||
+          method_str == kJSSetPageXOffset ||
+          method_str == kJSSetPageYOffset ||
+          method_str == kJSSetZoomLevel ||
+          method_str == kJSZoomFitToHeight ||
+          method_str == kJSZoomFitToWidth ||
+          method_str == kJSZoomIn ||
+          method_str == kJSZoomOut);
+}
+
+pp::Var Instance::CallScriptableMethod(const pp::Var& method,
+                                       const std::vector<pp::Var>& args,
+                                       pp::Var* exception) {
+  std::string method_str = method.AsString();
+  if (method_str == kJSGrayscale) {
+    if (args.size() == 1 && args[0].is_bool()) {
+      engine_->SetGrayscale(args[0].AsBool());
+      // Redraw
+      paint_manager_.InvalidateRect(pp::Rect(pp::Point(), plugin_size_));
+#ifdef ENABLE_THUMBNAILS
+      if (thumbnails_.visible())
+        thumbnails_.Show(true, true);
+#endif
+      return pp::Var(true);
+    }
+    return pp::Var(false);
+  }
+  if (method_str == kJSOnLoad) {
+    if (args.size() == 1 && args[0].is_string()) {
+      on_load_callback_ = args[0];
+      return pp::Var(true);
+    }
+    return pp::Var(false);
+  }
+  if (method_str == kJSOnScroll) {
+    if (args.size() == 1 && args[0].is_string()) {
+      on_scroll_callback_ = args[0];
+      return pp::Var(true);
+    }
+    return pp::Var(false);
+  }
+  if (method_str == kJSOnPluginSizeChanged) {
+    if (args.size() == 1 && args[0].is_string()) {
+      on_plugin_size_changed_callback_ = args[0];
+      return pp::Var(true);
+    }
+    return pp::Var(false);
+  }
+  if (method_str == kJSReload) {
+    document_load_state_ = LOAD_STATE_LOADING;
+    if (!full_)
+      LoadUrl(url_);
+    preview_engine_.reset();
+    print_preview_page_count_ = 0;
+    engine_.reset(PDFEngine::Create(this));
+    engine_->New(url_.c_str());
+#ifdef ENABLE_THUMBNAILS
+    thumbnails_.ResetEngine(engine_.get());
+#endif
+    return pp::Var();
+  }
+  if (method_str == kJSResetPrintPreviewUrl) {
+    if (args.size() == 1 && args[0].is_string()) {
+      url_ = args[0].AsString();
+      preview_pages_info_ = std::queue<PreviewPageInfo>();
+      preview_document_load_state_ = LOAD_STATE_COMPLETE;
+    }
+    return pp::Var();
+  }
+  if (method_str == kJSZoomFitToHeight) {
+    SetZoom(ZOOM_FIT_TO_PAGE, 0);
+    return pp::Var();
+  }
+  if (method_str == kJSZoomFitToWidth) {
+    SetZoom(ZOOM_FIT_TO_WIDTH, 0);
+    return pp::Var();
+  }
+  if (method_str == kJSZoomIn) {
+    SetZoom(ZOOM_SCALE, CalculateZoom(kZoomInButtonId));
+    return pp::Var();
+  }
+  if (method_str == kJSZoomOut) {
+    SetZoom(ZOOM_SCALE, CalculateZoom(kZoomOutButtonId));
+    return pp::Var();
+  }
+  if (method_str == kJSSetZoomLevel) {
+    if (args.size() == 1 && args[0].is_number())
+      SetZoom(ZOOM_SCALE, args[0].AsDouble());
+    return pp::Var();
+  }
+  if (method_str == kJSGetZoomLevel) {
+    return pp::Var(zoom_);
+  }
+  if (method_str == kJSGetHeight) {
+    return pp::Var(plugin_size_.height());
+  }
+  if (method_str == kJSGetWidth) {
+    return pp::Var(plugin_size_.width());
+  }
+  if (method_str == kJSGetHorizontalScrollbarThickness) {
+    return pp::Var(
+          h_scrollbar_.get() ? GetScrollbarReservedThickness() : 0);
+  }
+  if (method_str == kJSGetVerticalScrollbarThickness) {
+    return pp::Var(
+          v_scrollbar_.get() ? GetScrollbarReservedThickness() : 0);
+  }
+  if (method_str == kJSGetSelectedText) {
+    return GetSelectedText(false);
+  }
+  if (method_str == kJSDocumentLoadComplete) {
+    return pp::Var((document_load_state_ != LOAD_STATE_LOADING));
+  }
+  if (method_str == kJSPageYOffset) {
+    return pp::Var(static_cast<int32_t>(
+        v_scrollbar_.get() ? v_scrollbar_->GetValue() : 0));
+  }
+  if (method_str == kJSSetPageYOffset) {
+    if (args.size() == 1 && args[0].is_number() && v_scrollbar_.get())
+      ScrollToY(GetScaled(args[0].AsInt()));
+    return pp::Var();
+  }
+  if (method_str == kJSPageXOffset) {
+    return pp::Var(static_cast<int32_t>(
+        h_scrollbar_.get() ? h_scrollbar_->GetValue() : 0));
+  }
+  if (method_str == kJSSetPageXOffset) {
+    if (args.size() == 1 && args[0].is_number() && h_scrollbar_.get())
+      ScrollToX(GetScaled(args[0].AsInt()));
+    return pp::Var();
+  }
+  if (method_str == kJSRemovePrintButton) {
+    CreateToolbar(kPrintPreviewToolbarButtons,
+                  arraysize(kPrintPreviewToolbarButtons));
+    UpdateToolbarPosition(false);
+    Invalidate(pp::Rect(plugin_size_));
+    return pp::Var();
+  }
+  if (method_str == kJSGoToPage) {
+    if (args.size() == 1 && args[0].is_string()) {
+      ScrollToPage(atoi(args[0].AsString().c_str()));
+    }
+    return pp::Var();
+  }
+  if (method_str == kJSAccessibility) {
+    if (args.size() == 0) {
+      base::DictionaryValue node;
+      node.SetInteger(kAccessibleNumberOfPages, engine_->GetNumberOfPages());
+      node.SetBoolean(kAccessibleLoaded,
+                      document_load_state_ != LOAD_STATE_LOADING);
+      bool has_permissions =
+          engine_->HasPermission(PDFEngine::PERMISSION_COPY) ||
+          engine_->HasPermission(PDFEngine::PERMISSION_COPY_ACCESSIBLE);
+      node.SetBoolean(kAccessibleCopyable, has_permissions);
+      std::string json;
+      base::JSONWriter::Write(&node, &json);
+      return pp::Var(json);
+    } else if (args[0].is_number()) {
+      return pp::Var(engine_->GetPageAsJSON(args[0].AsInt()));
+    }
+  }
+  if (method_str == kJSPrintPreviewPageCount) {
+    if (args.size() == 1 && args[0].is_number())
+      SetPrintPreviewMode(args[0].AsInt());
+    return pp::Var();
+  }
+  if (method_str == kJSLoadPreviewPage) {
+    if (args.size() == 2 && args[0].is_string() && args[1].is_number())
+      ProcessPreviewPageInfo(args[0].AsString(), args[1].AsInt());
+    return pp::Var();
+  }
+  if (method_str == kJSGetPageLocationNormalized) {
+    const size_t kMaxLength = 30;
+    char location_info[kMaxLength];
+    int page_idx = engine_->GetMostVisiblePage();
+    if (page_idx < 0)
+      return pp::Var(std::string());
+    pp::Rect rect = engine_->GetPageContentsRect(page_idx);
+    int v_scrollbar_reserved_thickness =
+        v_scrollbar_.get() ? GetScaled(GetScrollbarReservedThickness()) : 0;
+
+    rect.set_x(rect.x() + ((plugin_size_.width() -
+        v_scrollbar_reserved_thickness - available_area_.width()) / 2));
+    base::snprintf(location_info,
+                   kMaxLength,
+                   "%0.4f;%0.4f;%0.4f;%0.4f;",
+                   rect.x() / static_cast<float>(plugin_size_.width()),
+                   rect.y() / static_cast<float>(plugin_size_.height()),
+                   rect.width() / static_cast<float>(plugin_size_.width()),
+                   rect.height()/ static_cast<float>(plugin_size_.height()));
+    return pp::Var(std::string(location_info));
+  }
+  if (method_str == kJSSetPageNumbers) {
+    if (args.size() != 1 || !args[0].is_string())
+      return pp::Var();
+    const int num_pages_signed = engine_->GetNumberOfPages();
+    if (num_pages_signed <= 0)
+      return pp::Var();
+    scoped_ptr<base::ListValue> page_ranges(static_cast<base::ListValue*>(
+        base::JSONReader::Read(args[0].AsString(), false)));
+    const size_t num_pages = static_cast<size_t>(num_pages_signed);
+    if (!page_ranges.get() || page_ranges->GetSize() != num_pages)
+      return pp::Var();
+
+    std::vector<int> print_preview_page_numbers;
+    for (size_t index = 0; index < num_pages; ++index) {
+      int page_number = 0;  // |page_number| is 1-based.
+      if (!page_ranges->GetInteger(index, &page_number) || page_number < 1)
+        return pp::Var();
+      print_preview_page_numbers.push_back(page_number);
+    }
+    print_preview_page_numbers_ = print_preview_page_numbers;
+    page_indicator_.set_current_page(GetPageNumberToDisplay());
+    return pp::Var();
+  }
+  // This is here to work around https://bugs.webkit.org/show_bug.cgi?id=16735.
+  // In JS, creating a synthetic keyboard event and dispatching it always
+  // result in a keycode of 0.
+  if (method_str == kJSSendKeyEvent) {
+    if (args.size() == 1 && args[0].is_number()) {
+      pp::KeyboardInputEvent event(
+          this,                        // instance
+          PP_INPUTEVENT_TYPE_KEYDOWN,  // HandleInputEvent only care about this.
+          0,                           // timestamp, not used for kbd events.
+          0,                           // no modifiers.
+          args[0].AsInt(),             // keycode.
+          pp::Var());                  // no char text needed.
+      HandleInputEvent(event);
+    }
+  }
+  return pp::Var();
+}
+
+void Instance::OnGeometryChanged(double old_zoom, float old_device_scale) {
+  bool force_no_horizontal_scrollbar = false;
+  int scrollbar_thickness = GetScrollbarThickness();
+
+  if (old_device_scale != device_scale_) {
+    // Change in device scale forces us to recreate resources
+    ConfigureNumberImageGenerator();
+
+    CreateToolbar(current_tb_info_, current_tb_info_size_);
+    // Load autoscroll anchor image.
+    autoscroll_anchor_ =
+        CreateResourceImage(PP_RESOURCEIMAGE_PDF_PAN_SCROLL_ICON);
+
+    ConfigurePageIndicator();
+    ConfigureProgressBar();
+
+    pp::Point scroll_position = engine_->GetScrollPosition();
+    ScalePoint(device_scale_ / old_device_scale, &scroll_position);
+    engine_->SetScrollPosition(scroll_position);
+  }
+
+  UpdateZoomScale();
+  if (zoom_ != old_zoom || device_scale_ != old_device_scale)
+    engine_->ZoomUpdated(zoom_ * device_scale_);
+  if (zoom_ != old_zoom)
+    ZoomChanged(zoom_);
+
+  available_area_ = pp::Rect(plugin_size_);
+  if (GetDocumentPixelHeight() > plugin_size_.height()) {
+    CreateVerticalScrollbar();
+  } else {
+    DestroyVerticalScrollbar();
+  }
+
+  int v_scrollbar_reserved_thickness =
+      v_scrollbar_.get() ? GetScaled(GetScrollbarReservedThickness()) : 0;
+
+  if (!force_no_horizontal_scrollbar &&
+      GetDocumentPixelWidth() >
+      (plugin_size_.width() - v_scrollbar_reserved_thickness)) {
+    CreateHorizontalScrollbar();
+
+    // Adding the horizontal scrollbar now might cause us to need vertical
+    // scrollbars.
+    if (GetDocumentPixelHeight() >
+        plugin_size_.height() - GetScaled(GetScrollbarReservedThickness())) {
+      CreateVerticalScrollbar();
+    }
+
+  } else {
+    DestroyHorizontalScrollbar();
+  }
+
+#ifdef ENABLE_THUMBNAILS
+  int thumbnails_pos = 0, thumbnails_total = 0;
+#endif
+  if (v_scrollbar_.get()) {
+    v_scrollbar_->SetScale(device_scale_);
+    available_area_.set_width(
+      std::max(0, plugin_size_.width() - v_scrollbar_reserved_thickness));
+
+#ifdef ENABLE_THUMBNAILS
+    int height = plugin_size_.height();
+#endif
+    int height_dip = plugin_dip_size_.height();
+
+#if defined(OS_MACOSX)
+    // Before Lion, Mac always had the resize at the bottom. After that, it
+    // never did.
+    if ((base::mac::IsOSSnowLeopard() && full_) ||
+        (base::mac::IsOSLionOrLater() && h_scrollbar_.get())) {
+#else
+    if (h_scrollbar_.get()) {
+#endif  // defined(OS_MACOSX)
+#ifdef ENABLE_THUMBNAILS
+      height -= GetScaled(GetScrollbarThickness());
+#endif
+      height_dip -= GetScrollbarThickness();
+    }
+#ifdef ENABLE_THUMBNAILS
+    int32 doc_height = GetDocumentPixelHeight();
+#endif
+    int32 doc_height_dip =
+        static_cast<int32>(GetDocumentPixelHeight() / device_scale_);
+#if defined(OS_MACOSX)
+    // On the Mac we always allow room for the resize button (whose width is
+    // the same as that of the scrollbar) in full mode. However, if there is no
+    // no horizontal scrollbar, the end of the scrollbar will scroll past the
+    // end of the document. This is because the scrollbar assumes that its own
+    // height (in the case of a vscroll bar) is the same as the height of the
+    // viewport. Since the viewport is actually larger, we compensate by
+    // adjusting the document height. Similar logic applies below for the
+    // horizontal scrollbar.
+    // For example, if the document size is 1000, and the viewport size is 200,
+    // then the scrollbar position at the end will be 800. In this case the
+    // viewport is actally 215 (assuming 15 as the scrollbar width) but the
+    // scrollbar thinks it is 200. We want the scrollbar position at the end to
+    // be 785. Making the document size 985 achieves this.
+    if (full_ && !h_scrollbar_.get()) {
+#ifdef ENABLE_THUMBNAILS
+      doc_height -= GetScaled(GetScrollbarThickness());
+#endif
+      doc_height_dip -= GetScrollbarThickness();
+    }
+#endif  // defined(OS_MACOSX)
+
+    int32 position;
+    position = v_scrollbar_->GetValue();
+    position = static_cast<int>(position * zoom_ / old_zoom);
+    valid_v_range_ = doc_height_dip - height_dip;
+    if (position > valid_v_range_)
+      position = valid_v_range_;
+
+    v_scrollbar_->SetValue(position);
+
+    PP_Rect loc;
+    loc.point.x = static_cast<int>(available_area_.right() / device_scale_);
+    if (IsOverlayScrollbar())
+      loc.point.x -= scrollbar_thickness;
+    loc.point.y = 0;
+    loc.size.width = scrollbar_thickness;
+    loc.size.height = height_dip;
+    v_scrollbar_->SetLocation(loc);
+    v_scrollbar_->SetDocumentSize(doc_height_dip);
+
+#ifdef ENABLE_THUMBNAILS
+    thumbnails_pos = position;
+    thumbnails_total = doc_height - height;
+#endif
+  }
+
+  if (h_scrollbar_.get()) {
+    h_scrollbar_->SetScale(device_scale_);
+    available_area_.set_height(
+        std::max(0, plugin_size_.height() -
+                    GetScaled(GetScrollbarReservedThickness())));
+
+    int width_dip = plugin_dip_size_.width();
+
+    // See note above.
+#if defined(OS_MACOSX)
+    if ((base::mac::IsOSSnowLeopard() && full_) ||
+        (base::mac::IsOSLionOrLater() && v_scrollbar_.get())) {
+#else
+    if (v_scrollbar_.get()) {
+#endif
+      width_dip -= GetScrollbarThickness();
+    }
+    int32 doc_width_dip =
+        static_cast<int32>(GetDocumentPixelWidth() / device_scale_);
+#if defined(OS_MACOSX)
+    // See comment in the above if (v_scrollbar_.get()) block.
+    if (full_ && !v_scrollbar_.get())
+      doc_width_dip -= GetScrollbarThickness();
+#endif  // defined(OS_MACOSX)
+
+    int32 position;
+    position = h_scrollbar_->GetValue();
+    position = static_cast<int>(position * zoom_ / old_zoom);
+    position = std::min(position, doc_width_dip - width_dip);
+
+    h_scrollbar_->SetValue(position);
+
+    PP_Rect loc;
+    loc.point.x = 0;
+    loc.point.y = static_cast<int>(available_area_.bottom() / device_scale_);
+    if (IsOverlayScrollbar())
+      loc.point.y -= scrollbar_thickness;
+    loc.size.width = width_dip;
+    loc.size.height = scrollbar_thickness;
+    h_scrollbar_->SetLocation(loc);
+    h_scrollbar_->SetDocumentSize(doc_width_dip);
+  }
+
+  int doc_width = GetDocumentPixelWidth();
+  if (doc_width < available_area_.width()) {
+    available_area_.Offset((available_area_.width() - doc_width) / 2, 0);
+    available_area_.set_width(doc_width);
+  }
+  int doc_height = GetDocumentPixelHeight();
+  if (doc_height < available_area_.height()) {
+    available_area_.set_height(doc_height);
+  }
+
+  // We'll invalidate the entire plugin anyways.
+  UpdateToolbarPosition(false);
+  UpdateProgressBarPosition(false);
+  UpdatePageIndicatorPosition(false);
+
+#ifdef ENABLE_THUMBNAILS
+  // Update thumbnail control position.
+  thumbnails_.SetPosition(thumbnails_pos, thumbnails_total, false);
+  pp::Rect thumbnails_rc(plugin_size_.width() - GetScaled(kThumbnailsWidth), 0,
+    GetScaled(kThumbnailsWidth), plugin_size_.height());
+  if (v_scrollbar_.get())
+    thumbnails_rc.Offset(-v_scrollbar_reserved_thickness, 0);
+  if (h_scrollbar_.get())
+    thumbnails_rc.Inset(0, 0, 0, v_scrollbar_reserved_thickness);
+  thumbnails_.SetRect(thumbnails_rc, false);
+#endif
+
+  CalculateBackgroundParts();
+  engine_->PageOffsetUpdated(available_area_.point());
+  engine_->PluginSizeUpdated(available_area_.size());
+
+  if (!document_size_.GetArea())
+    return;
+  paint_manager_.InvalidateRect(pp::Rect(pp::Point(), plugin_size_));
+
+  // Run the plugin size change callback asynchronously. This function can be
+  // invoked by a layout change which should not re-enter into JS synchronously.
+  pp::CompletionCallback callback =
+      callback_factory_.NewCallback(&Instance::RunCallback,
+                                    on_plugin_size_changed_callback_);
+  pp::Module::Get()->core()->CallOnMainThread(0, callback);
+}
+
+void Instance::RunCallback(int32_t, pp::Var callback) {
+  if (callback.is_string())
+    ExecuteScript(callback);
+}
+
+void Instance::CreateHorizontalScrollbar() {
+  if (h_scrollbar_.get())
+    return;
+
+  h_scrollbar_.reset(new pp::Scrollbar_Dev(this, false));
+}
+
+void Instance::CreateVerticalScrollbar() {
+  if (v_scrollbar_.get())
+    return;
+
+  v_scrollbar_.reset(new pp::Scrollbar_Dev(this, true));
+}
+
+void Instance::DestroyHorizontalScrollbar() {
+  if (!h_scrollbar_.get())
+    return;
+  if (h_scrollbar_->GetValue())
+    engine_->ScrolledToXPosition(0);
+  h_scrollbar_.reset();
+}
+
+void Instance::DestroyVerticalScrollbar() {
+  if (!v_scrollbar_.get())
+    return;
+  if (v_scrollbar_->GetValue())
+    engine_->ScrolledToYPosition(0);
+  v_scrollbar_.reset();
+  page_indicator_.Show(false, true);
+}
+
+int Instance::GetScrollbarThickness() {
+  if (scrollbar_thickness_ == -1) {
+    pp::Scrollbar_Dev temp_scrollbar(this, false);
+    scrollbar_thickness_ = temp_scrollbar.GetThickness();
+    scrollbar_reserved_thickness_ =
+      temp_scrollbar.IsOverlay() ? 0 : scrollbar_thickness_;
+  }
+
+  return scrollbar_thickness_;
+}
+
+int Instance::GetScrollbarReservedThickness() {
+  GetScrollbarThickness();
+  return scrollbar_reserved_thickness_;
+}
+
+bool Instance::IsOverlayScrollbar() {
+  return GetScrollbarReservedThickness() == 0;
+}
+
+void Instance::CreateToolbar(const ToolbarButtonInfo* tb_info, size_t size) {
+  toolbar_.reset(new FadingControls());
+
+  DCHECK(tb_info);
+  DCHECK(size >= 0);
+
+  // Remember the current toolbar information in case we need to recreate the
+  // images later.
+  current_tb_info_ = tb_info;
+  current_tb_info_size_ = size;
+
+  int max_height = 0;
+  pp::Point origin(kToolbarFadingOffsetLeft, kToolbarFadingOffsetTop);
+  ScalePoint(device_scale_, &origin);
+
+  std::list<Button*> buttons;
+  for (size_t i = 0; i < size; i++) {
+    Button* btn = new Button;
+    pp::ImageData normal_face =
+        CreateResourceImage(tb_info[i].normal);
+    btn->CreateButton(tb_info[i].id,
+                      origin,
+                      true,
+                      toolbar_.get(),
+                      tb_info[i].style,
+                      normal_face,
+                      CreateResourceImage(tb_info[i].highlighted),
+                      CreateResourceImage(tb_info[i].pressed));
+    buttons.push_back(btn);
+
+    origin += pp::Point(normal_face.size().width(), 0);
+    max_height = std::max(max_height, normal_face.size().height());
+  }
+
+  pp::Rect rc_toolbar(0, 0,
+      origin.x() + GetToolbarRightOffset(),
+      origin.y() + max_height + GetToolbarBottomOffset());
+  toolbar_->CreateFadingControls(
+      kToolbarId, rc_toolbar, false, this, kTransparentAlpha);
+
+  std::list<Button*>::iterator iter;
+  for (iter = buttons.begin(); iter != buttons.end(); ++iter) {
+    toolbar_->AddControl(*iter);
+  }
+}
+
+int Instance::GetToolbarRightOffset() {
+  int scrollbar_thickness = GetScrollbarThickness();
+  return GetScaled(kToolbarFadingOffsetRight) + 2 * scrollbar_thickness;
+}
+
+int Instance::GetToolbarBottomOffset() {
+  int scrollbar_thickness = GetScrollbarThickness();
+  return GetScaled(kToolbarFadingOffsetBottom) + scrollbar_thickness;
+}
+
+std::vector<pp::ImageData> Instance::GetThumbnailResources() {
+  std::vector<pp::ImageData> num_images(10);
+  num_images[0] = CreateResourceImage(PP_RESOURCEIMAGE_PDF_BUTTON_THUMBNAIL_0);
+  num_images[1] = CreateResourceImage(PP_RESOURCEIMAGE_PDF_BUTTON_THUMBNAIL_1);
+  num_images[2] = CreateResourceImage(PP_RESOURCEIMAGE_PDF_BUTTON_THUMBNAIL_2);
+  num_images[3] = CreateResourceImage(PP_RESOURCEIMAGE_PDF_BUTTON_THUMBNAIL_3);
+  num_images[4] = CreateResourceImage(PP_RESOURCEIMAGE_PDF_BUTTON_THUMBNAIL_4);
+  num_images[5] = CreateResourceImage(PP_RESOURCEIMAGE_PDF_BUTTON_THUMBNAIL_5);
+  num_images[6] = CreateResourceImage(PP_RESOURCEIMAGE_PDF_BUTTON_THUMBNAIL_6);
+  num_images[7] = CreateResourceImage(PP_RESOURCEIMAGE_PDF_BUTTON_THUMBNAIL_7);
+  num_images[8] = CreateResourceImage(PP_RESOURCEIMAGE_PDF_BUTTON_THUMBNAIL_8);
+  num_images[9] = CreateResourceImage(PP_RESOURCEIMAGE_PDF_BUTTON_THUMBNAIL_9);
+  return num_images;
+}
+
+std::vector<pp::ImageData> Instance::GetProgressBarResources(
+    pp::ImageData* background) {
+  std::vector<pp::ImageData> result(9);
+  result[0] = CreateResourceImage(PP_RESOURCEIMAGE_PDF_PROGRESS_BAR_0);
+  result[1] = CreateResourceImage(PP_RESOURCEIMAGE_PDF_PROGRESS_BAR_1);
+  result[2] = CreateResourceImage(PP_RESOURCEIMAGE_PDF_PROGRESS_BAR_2);
+  result[3] = CreateResourceImage(PP_RESOURCEIMAGE_PDF_PROGRESS_BAR_3);
+  result[4] = CreateResourceImage(PP_RESOURCEIMAGE_PDF_PROGRESS_BAR_4);
+  result[5] = CreateResourceImage(PP_RESOURCEIMAGE_PDF_PROGRESS_BAR_5);
+  result[6] = CreateResourceImage(PP_RESOURCEIMAGE_PDF_PROGRESS_BAR_6);
+  result[7] = CreateResourceImage(PP_RESOURCEIMAGE_PDF_PROGRESS_BAR_7);
+  result[8] = CreateResourceImage(PP_RESOURCEIMAGE_PDF_PROGRESS_BAR_8);
+  *background = CreateResourceImage(
+      PP_RESOURCEIMAGE_PDF_PROGRESS_BAR_BACKGROUND);
+  return result;
+}
+
+void Instance::CreatePageIndicator(bool always_visible) {
+  page_indicator_.CreatePageIndicator(kPageIndicatorId, false, this,
+      number_image_generator(), always_visible);
+  ConfigurePageIndicator();
+}
+
+void Instance::ConfigurePageIndicator() {
+  pp::ImageData background =
+      CreateResourceImage(PP_RESOURCEIMAGE_PDF_PAGE_INDICATOR_BACKGROUND);
+  page_indicator_.Configure(pp::Point(), background);
+}
+
+void Instance::CreateProgressBar() {
+  pp::ImageData background;
+  std::vector<pp::ImageData> images = GetProgressBarResources(&background);
+  std::string text = GetLocalizedString(PP_RESOURCESTRING_PDFPROGRESSLOADING);
+  progress_bar_.CreateProgressControl(kProgressBarId, false, this, 0.0,
+      device_scale_, images, background, text);
+}
+
+void Instance::ConfigureProgressBar() {
+  pp::ImageData background;
+  std::vector<pp::ImageData> images = GetProgressBarResources(&background);
+  progress_bar_.Reconfigure(background, images, device_scale_);
+}
+
+void Instance::CreateThumbnails() {
+  thumbnails_.CreateThumbnailControl(
+      kThumbnailsId, pp::Rect(), false, this, engine_.get(),
+      number_image_generator());
+}
+
+void Instance::LoadUrl(const std::string& url) {
+  LoadUrlInternal(url, &embed_loader_, &Instance::DidOpen);
+}
+
+void Instance::LoadPreviewUrl(const std::string& url) {
+  LoadUrlInternal(url, &embed_preview_loader_, &Instance::DidOpenPreview);
+}
+
+void Instance::LoadUrlInternal(const std::string& url, pp::URLLoader* loader,
+                               void (Instance::* method)(int32_t)) {
+  pp::URLRequestInfo request(this);
+  request.SetURL(url);
+  request.SetMethod("GET");
+
+  *loader = CreateURLLoaderInternal();
+  pp::CompletionCallback callback = loader_factory_.NewCallback(method);
+  int rv = loader->Open(request, callback);
+  if (rv != PP_OK_COMPLETIONPENDING)
+    callback.Run(rv);
+}
+
+pp::URLLoader Instance::CreateURLLoaderInternal() {
+  pp::URLLoader loader(this);
+
+  const PPB_URLLoaderTrusted* trusted_interface =
+      reinterpret_cast<const PPB_URLLoaderTrusted*>(
+          pp::Module::Get()->GetBrowserInterface(
+              PPB_URLLOADERTRUSTED_INTERFACE));
+  if (trusted_interface)
+    trusted_interface->GrantUniversalAccess(loader.pp_resource());
+  return loader;
+}
+
+int Instance::GetInitialPage(const std::string& url) {
+  size_t found_idx = url.find('#');
+  if (found_idx == std::string::npos)
+    return -1;
+
+  const std::string& ref = url.substr(found_idx + 1);
+  std::vector<std::string> fragments;
+  Tokenize(ref, kDelimiters, &fragments);
+
+  // Page number to return, zero-based.
+  int page = -1;
+
+  // Handle the case of http://foo.com/bar#NAMEDDEST. This is not explicitly
+  // mentioned except by example in the Adobe "PDF Open Parameters" document.
+  if ((fragments.size() == 1) && (fragments[0].find('=') == std::string::npos))
+    return engine_->GetNamedDestinationPage(fragments[0]);
+
+  for (size_t i = 0; i < fragments.size(); ++i) {
+    std::vector<std::string> key_value;
+    base::SplitString(fragments[i], '=', &key_value);
+    if (key_value.size() != 2)
+      continue;
+    const std::string& key = key_value[0];
+    const std::string& value = key_value[1];
+
+    if (base::strcasecmp(kPage, key.c_str()) == 0) {
+      // |page_value| is 1-based.
+      int page_value = -1;
+      if (base::StringToInt(value, &page_value) && page_value > 0)
+        page = page_value - 1;
+      continue;
+    }
+    if (base::strcasecmp(kNamedDest, key.c_str()) == 0) {
+      // |page_value| is 0-based.
+      int page_value = engine_->GetNamedDestinationPage(value);
+      if (page_value >= 0)
+        page = page_value;
+      continue;
+    }
+  }
+  return page;
+}
+
+void Instance::UpdateToolbarPosition(bool invalidate) {
+  pp::Rect ctrl_rc = toolbar_->GetControlsRect();
+  int min_toolbar_width = ctrl_rc.width() + GetToolbarRightOffset() +
+      GetScaled(kToolbarFadingOffsetLeft);
+  int min_toolbar_height = ctrl_rc.width() + GetToolbarBottomOffset() +
+      GetScaled(kToolbarFadingOffsetBottom);
+
+  // Update toolbar position
+  if (plugin_size_.width() < min_toolbar_width ||
+      plugin_size_.height() < min_toolbar_height) {
+    // Disable toolbar if it does not fit on the screen.
+    toolbar_->Show(false, invalidate);
+  } else {
+    pp::Point offset(
+        plugin_size_.width() - GetToolbarRightOffset() - ctrl_rc.right(),
+        plugin_size_.height() - GetToolbarBottomOffset() - ctrl_rc.bottom());
+    toolbar_->MoveBy(offset, invalidate);
+
+    int toolbar_width = std::max(plugin_size_.width() / 2, min_toolbar_width);
+    toolbar_->ExpandLeft(toolbar_width - toolbar_->rect().width());
+    toolbar_->Show(painted_first_page_, invalidate);
+  }
+}
+
+void Instance::UpdateProgressBarPosition(bool invalidate) {
+  // TODO(gene): verify we don't overlap with toolbar.
+  int scrollbar_thickness = GetScrollbarThickness();
+  pp::Point progress_origin(
+      scrollbar_thickness + GetScaled(kProgressOffsetLeft),
+      plugin_size_.height() - progress_bar_.rect().height() -
+          scrollbar_thickness - GetScaled(kProgressOffsetBottom));
+  progress_bar_.MoveTo(progress_origin, invalidate);
+}
+
+void Instance::UpdatePageIndicatorPosition(bool invalidate) {
+  int32 doc_height = static_cast<int>(document_size_.height() * zoom_);
+  pp::Point origin(
+      plugin_size_.width() - page_indicator_.rect().width() -
+          GetScaled(GetScrollbarReservedThickness()),
+      page_indicator_.GetYPosition(engine_->GetVerticalScrollbarYPosition(),
+                                   doc_height, plugin_size_.height()));
+  page_indicator_.MoveTo(origin, invalidate);
+}
+
+void Instance::SetZoom(ZoomMode zoom_mode, double scale) {
+  double old_zoom = zoom_;
+
+  zoom_mode_ = zoom_mode;
+  if (zoom_mode_ == ZOOM_SCALE)
+    zoom_ = scale;
+  UpdateZoomScale();
+
+  engine_->ZoomUpdated(zoom_ * device_scale_);
+  OnGeometryChanged(old_zoom, device_scale_);
+
+  // If fit-to-height, snap to the beginning of the most visible page.
+  if (zoom_mode_ == ZOOM_FIT_TO_PAGE) {
+    ScrollToPage(engine_->GetMostVisiblePage());
+  }
+
+  // Update sticky buttons to the current zoom style.
+  Button* ftp_btn = static_cast<Button*>(
+      toolbar_->GetControl(kFitToPageButtonId));
+  Button* ftw_btn = static_cast<Button*>(
+      toolbar_->GetControl(kFitToWidthButtonId));
+  switch (zoom_mode_) {
+    case ZOOM_FIT_TO_PAGE:
+      ftp_btn->SetPressedState(true);
+      ftw_btn->SetPressedState(false);
+      break;
+    case ZOOM_FIT_TO_WIDTH:
+      ftw_btn->SetPressedState(true);
+      ftp_btn->SetPressedState(false);
+      break;
+    default:
+      ftw_btn->SetPressedState(false);
+      ftp_btn->SetPressedState(false);
+  }
+}
+
+void Instance::UpdateZoomScale() {
+  switch (zoom_mode_) {
+    case ZOOM_SCALE:
+      break;  // Keep current scale.
+    case ZOOM_FIT_TO_PAGE: {
+      int page_num = engine_->GetFirstVisiblePage();
+      if (page_num == -1)
+        break;
+      pp::Rect rc = engine_->GetPageRect(page_num);
+      if (!rc.height())
+        break;
+      // Calculate fit to width zoom level.
+      double ftw_zoom = static_cast<double>(plugin_dip_size_.width() -
+          GetScrollbarReservedThickness()) / document_size_.width();
+      // Calculate fit to height zoom level. If document will not fit
+      // horizontally, adjust zoom level to allow space for horizontal
+      // scrollbar.
+      double fth_zoom =
+          static_cast<double>(plugin_dip_size_.height()) / rc.height();
+      if (fth_zoom * document_size_.width() >
+          plugin_dip_size_.width() - GetScrollbarReservedThickness())
+        fth_zoom = static_cast<double>(plugin_dip_size_.height()
+            - GetScrollbarReservedThickness()) / rc.height();
+      zoom_ = std::min(ftw_zoom, fth_zoom);
+    } break;
+    case ZOOM_FIT_TO_WIDTH:
+    case ZOOM_AUTO:
+      if (!document_size_.width())
+        break;
+      zoom_ = static_cast<double>(plugin_dip_size_.width() -
+          GetScrollbarReservedThickness()) / document_size_.width();
+      if (zoom_mode_ == ZOOM_AUTO && zoom_ > 1.0)
+        zoom_ = 1.0;
+      break;
+  }
+  zoom_ = ClipToRange(zoom_, kMinZoom, kMaxZoom);
+}
+
+double Instance::CalculateZoom(uint32 control_id) const {
+  if (control_id == kZoomInButtonId) {
+    for (size_t i = 0; i < chrome_page_zoom::kPresetZoomFactorsSize; ++i) {
+      double current_zoom = chrome_page_zoom::kPresetZoomFactors[i];
+      if (current_zoom - content::kEpsilon > zoom_)
+        return current_zoom;
+    }
+  } else {
+    for (size_t i = chrome_page_zoom::kPresetZoomFactorsSize; i > 0; --i) {
+      double current_zoom = chrome_page_zoom::kPresetZoomFactors[i - 1];
+      if (current_zoom + content::kEpsilon < zoom_)
+        return current_zoom;
+    }
+  }
+  return zoom_;
+}
+
+pp::ImageData Instance::CreateResourceImage(PP_ResourceImage image_id) {
+  pp::ImageData resource_data;
+  if (hidpi_enabled_) {
+    resource_data =
+        pp::PDF::GetResourceImageForScale(this, image_id, device_scale_);
+  }
+
+  return resource_data.data() ? resource_data
+                              : pp::PDF::GetResourceImage(this, image_id);
+}
+
+std::string Instance::GetLocalizedString(PP_ResourceString id) {
+  pp::Var rv(pp::PDF::GetLocalizedString(this, id));
+  if (!rv.is_string())
+    return std::string();
+
+  return rv.AsString();
+}
+
+void Instance::DrawText(const pp::Point& top_center, PP_ResourceString id) {
+  std::string str(GetLocalizedString(id));
+
+  pp::FontDescription_Dev description;
+  description.set_family(PP_FONTFAMILY_SANSSERIF);
+  description.set_size(kMessageTextSize * device_scale_);
+  pp::Font_Dev font(this, description);
+  int length = font.MeasureSimpleText(str);
+  pp::Point point(top_center);
+  point.set_x(point.x() - length / 2);
+  DCHECK(!image_data_.is_null());
+  font.DrawSimpleText(&image_data_, str, point, kMessageTextColor);
+}
+
+void Instance::SetPrintPreviewMode(int page_count) {
+  if (!IsPrintPreview() || page_count <= 0) {
+    print_preview_page_count_ = 0;
+    return;
+  }
+
+  print_preview_page_count_ = page_count;
+  ScrollToPage(0);
+  engine_->AppendBlankPages(print_preview_page_count_);
+  if (preview_pages_info_.size() > 0)
+    LoadAvailablePreviewPage();
+}
+
+bool Instance::IsPrintPreview() {
+  return IsPrintPreviewUrl(url_);
+}
+
+int Instance::GetPageNumberToDisplay() {
+  int page = engine_->GetMostVisiblePage();
+  if (IsPrintPreview() && !print_preview_page_numbers_.empty()) {
+    page = ClipToRange<int>(page, 0, print_preview_page_numbers_.size() - 1);
+    return print_preview_page_numbers_[page];
+  }
+  return page + 1;
+}
+
+void Instance::ProcessPreviewPageInfo(const std::string& url,
+                                      int dst_page_index) {
+  if (!IsPrintPreview() || print_preview_page_count_ < 0)
+    return;
+
+  int src_page_index = ExtractPrintPreviewPageIndex(url);
+  if (src_page_index < 1)
+    return;
+
+  preview_pages_info_.push(std::make_pair(url, dst_page_index));
+  LoadAvailablePreviewPage();
+}
+
+void Instance::LoadAvailablePreviewPage() {
+  if (preview_pages_info_.size() <= 0)
+    return;
+
+  std::string url = preview_pages_info_.front().first;
+  int dst_page_index = preview_pages_info_.front().second;
+  int src_page_index = ExtractPrintPreviewPageIndex(url);
+  if (src_page_index < 1 ||
+      dst_page_index >= print_preview_page_count_ ||
+      preview_document_load_state_ == LOAD_STATE_LOADING) {
+    return;
+  }
+
+  preview_document_load_state_ = LOAD_STATE_LOADING;
+  LoadPreviewUrl(url);
+}
+
+void Instance::EnableAutoscroll(const pp::Point& origin) {
+  if (is_autoscroll_)
+    return;
+
+  pp::Size client_size = plugin_size_;
+  if (v_scrollbar_.get())
+    client_size.Enlarge(-GetScrollbarThickness(), 0);
+  if (h_scrollbar_.get())
+    client_size.Enlarge(0, -GetScrollbarThickness());
+
+  // Do not allow autoscroll if client area is too small.
+  if (autoscroll_anchor_.size().width() > client_size.width() ||
+      autoscroll_anchor_.size().height() > client_size.height())
+    return;
+
+  autoscroll_rect_ = pp::Rect(
+      pp::Point(origin.x() - autoscroll_anchor_.size().width() / 2,
+                origin.y() - autoscroll_anchor_.size().height() / 2),
+      autoscroll_anchor_.size());
+
+  // Make sure autoscroll anchor is in the client area.
+  if (autoscroll_rect_.right() > client_size.width()) {
+    autoscroll_rect_.set_x(
+        client_size.width() - autoscroll_anchor_.size().width());
+  }
+  if (autoscroll_rect_.bottom() > client_size.height()) {
+    autoscroll_rect_.set_y(
+        client_size.height() - autoscroll_anchor_.size().height());
+  }
+
+  if (autoscroll_rect_.x() < 0)
+    autoscroll_rect_.set_x(0);
+  if (autoscroll_rect_.y() < 0)
+    autoscroll_rect_.set_y(0);
+
+  is_autoscroll_ = true;
+  Invalidate(kAutoScrollId, autoscroll_rect_);
+
+  ScheduleTimer(kAutoScrollId, kAutoScrollTimeoutMs);
+}
+
+void Instance::DisableAutoscroll() {
+  if (is_autoscroll_) {
+    is_autoscroll_ = false;
+    Invalidate(kAutoScrollId, autoscroll_rect_);
+  }
+}
+
+PP_CursorType_Dev Instance::CalculateAutoscroll(const pp::Point& mouse_pos) {
+  // Scroll only if mouse pointer is outside of the anchor area.
+  if (autoscroll_rect_.Contains(mouse_pos)) {
+    autoscroll_x_ = 0;
+    autoscroll_y_ = 0;
+    return PP_CURSORTYPE_MIDDLEPANNING;
+  }
+
+  // Relative position to the center of anchor area.
+  pp::Point rel_pos = mouse_pos - autoscroll_rect_.CenterPoint();
+
+  // Calculate angle from the X axis. Angle is in range from -pi to pi.
+  double angle = atan2(static_cast<double>(rel_pos.y()),
+                       static_cast<double>(rel_pos.x()));
+
+  autoscroll_x_ = rel_pos.x() * kAutoScrollFactor;
+  autoscroll_y_ = rel_pos.y() * kAutoScrollFactor;
+
+  // Angle is from -pi to pi. Screen Y is increasing toward bottom,
+  // so negative angle represent north direction.
+  if (angle < - (M_PI * 7.0 / 8.0)) {
+    // going west
+    return PP_CURSORTYPE_WESTPANNING;
+  } else if (angle < - (M_PI * 5.0 / 8.0)) {
+    // going north-west
+    return PP_CURSORTYPE_NORTHWESTPANNING;
+  } else if (angle < - (M_PI * 3.0 / 8.0)) {
+    // going north.
+    return PP_CURSORTYPE_NORTHPANNING;
+  } else if (angle < - (M_PI * 1.0 / 8.0)) {
+    // going north-east
+    return PP_CURSORTYPE_NORTHEASTPANNING;
+  } else if (angle < M_PI * 1.0 / 8.0) {
+    // going east.
+    return PP_CURSORTYPE_EASTPANNING;
+  } else if (angle < M_PI * 3.0 / 8.0) {
+    // going south-east
+    return PP_CURSORTYPE_SOUTHEASTPANNING;
+  } else if (angle < M_PI * 5.0 / 8.0) {
+    // going south.
+    return PP_CURSORTYPE_SOUTHPANNING;
+  } else if (angle < M_PI * 7.0 / 8.0) {
+    // going south-west
+    return PP_CURSORTYPE_SOUTHWESTPANNING;
+  }
+
+  // went around the circle, going west again
+  return PP_CURSORTYPE_WESTPANNING;
+}
+
+void Instance::ConfigureNumberImageGenerator() {
+  std::vector<pp::ImageData> num_images = GetThumbnailResources();
+  pp::ImageData number_background = CreateResourceImage(
+      PP_RESOURCEIMAGE_PDF_BUTTON_THUMBNAIL_NUM_BACKGROUND);
+  number_image_generator_->Configure(number_background,
+                                     num_images,
+                                     device_scale_);
+}
+
+NumberImageGenerator* Instance::number_image_generator() {
+  if (!number_image_generator_.get()) {
+    number_image_generator_.reset(new NumberImageGenerator(this));
+    ConfigureNumberImageGenerator();
+  }
+  return number_image_generator_.get();
+}
+
+int Instance::GetScaled(int x) const {
+  return static_cast<int>(x * device_scale_);
+}
+
+void Instance::UserMetricsRecordAction(const std::string& action) {
+  pp::PDF::UserMetricsRecordAction(this, pp::Var(action));
+}
+
+PDFScriptableObject::PDFScriptableObject(Instance* instance)
+    : instance_(instance) {
+}
+
+PDFScriptableObject::~PDFScriptableObject() {
+}
+
+bool PDFScriptableObject::HasMethod(const pp::Var& name, pp::Var* exception) {
+  return instance_->HasScriptableMethod(name, exception);
+}
+
+pp::Var PDFScriptableObject::Call(const pp::Var& method,
+                                  const std::vector<pp::Var>& args,
+                                  pp::Var* exception) {
+  return instance_->CallScriptableMethod(method, args, exception);
+}
+
+}  // namespace chrome_pdf
diff --git a/xfa_test/pdf/instance.h b/xfa_test/pdf/instance.h
new file mode 100644
index 0000000000..d39ba407c9
--- /dev/null
+++ b/xfa_test/pdf/instance.h
@@ -0,0 +1,531 @@
+// Copyright (c) 2012 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef PDF_INSTANCE_H_
+#define PDF_INSTANCE_H_
+
+#include <queue>
+#include <set>
+#include <string>
+#include <utility>
+#include <vector>
+
+#include "base/memory/scoped_ptr.h"
+#include "pdf/button.h"
+#include "pdf/fading_controls.h"
+#include "pdf/page_indicator.h"
+#include "pdf/paint_manager.h"
+#include "pdf/pdf_engine.h"
+#include "pdf/preview_mode_client.h"
+#include "pdf/progress_control.h"
+#include "pdf/thumbnail_control.h"
+
+#include "ppapi/c/private/ppb_pdf.h"
+#include "ppapi/cpp/dev/printing_dev.h"
+#include "ppapi/cpp/dev/scriptable_object_deprecated.h"
+#include "ppapi/cpp/dev/scrollbar_dev.h"
+#include "ppapi/cpp/dev/selection_dev.h"
+#include "ppapi/cpp/dev/widget_client_dev.h"
+#include "ppapi/cpp/dev/zoom_dev.h"
+#include "ppapi/cpp/graphics_2d.h"
+#include "ppapi/cpp/image_data.h"
+#include "ppapi/cpp/input_event.h"
+#include "ppapi/cpp/private/find_private.h"
+#include "ppapi/cpp/private/instance_private.h"
+#include "ppapi/cpp/private/var_private.h"
+#include "ppapi/cpp/url_loader.h"
+#include "ppapi/utility/completion_callback_factory.h"
+
+namespace pp {
+class TextInput_Dev;
+}
+
+namespace chrome_pdf {
+
+struct ToolbarButtonInfo;
+
+class Instance : public pp::InstancePrivate,
+                 public pp::Find_Private,
+                 public pp::Printing_Dev,
+                 public pp::Selection_Dev,
+                 public pp::WidgetClient_Dev,
+                 public pp::Zoom_Dev,
+                 public PaintManager::Client,
+                 public PDFEngine::Client,
+                 public PreviewModeClient::Client,
+                 public ControlOwner {
+ public:
+  explicit Instance(PP_Instance instance);
+  virtual ~Instance();
+
+  // pp::Instance implementation.
+  virtual bool Init(uint32_t argc,
+                    const char* argn[],
+                    const char* argv[]) override;
+  virtual bool HandleDocumentLoad(const pp::URLLoader& loader) override;
+  virtual bool HandleInputEvent(const pp::InputEvent& event) override;
+  virtual void DidChangeView(const pp::View& view) override;
+  virtual pp::Var GetInstanceObject() override;
+
+  // pp::Find_Private implementation.
+  virtual bool StartFind(const std::string& text, bool case_sensitive) override;
+  virtual void SelectFindResult(bool forward) override;
+  virtual void StopFind() override;
+
+  // pp::PaintManager::Client implementation.
+  virtual void OnPaint(const std::vector<pp::Rect>& paint_rects,
+                       std::vector<PaintManager::ReadyRect>* ready,
+                       std::vector<pp::Rect>* pending) override;
+
+  // pp::Printing_Dev implementation.
+  virtual uint32_t QuerySupportedPrintOutputFormats() override;
+  virtual int32_t PrintBegin(
+      const PP_PrintSettings_Dev& print_settings) override;
+  virtual pp::Resource PrintPages(
+      const PP_PrintPageNumberRange_Dev* page_ranges,
+      uint32_t page_range_count) override;
+  virtual void PrintEnd() override;
+  virtual bool IsPrintScalingDisabled() override;
+
+  // pp::Private implementation.
+  virtual pp::Var GetLinkAtPosition(const pp::Point& point);
+
+  // PPP_Selection_Dev implementation.
+  virtual pp::Var GetSelectedText(bool html) override;
+
+  // WidgetClient_Dev implementation.
+  virtual void InvalidateWidget(pp::Widget_Dev widget,
+                                const pp::Rect& dirty_rect) override;
+  virtual void ScrollbarValueChanged(pp::Scrollbar_Dev scrollbar,
+                                     uint32_t value) override;
+  virtual void ScrollbarOverlayChanged(pp::Scrollbar_Dev scrollbar,
+                                       bool overlay) override;
+
+  // pp::Zoom_Dev implementation.
+  virtual void Zoom(double scale, bool text_only) override;
+  void ZoomChanged(double factor);  // Override.
+
+  void FlushCallback(int32_t result);
+  void DidOpen(int32_t result);
+  void DidOpenPreview(int32_t result);
+  // If the given widget intersects the rectangle, paints it and adds the
+  // rect to ready.
+  void PaintIfWidgetIntersects(pp::Widget_Dev* widget,
+                               const pp::Rect& rect,
+                               std::vector<PaintManager::ReadyRect>* ready,
+                               std::vector<pp::Rect>* pending);
+
+  // Called when the timer is fired.
+  void OnTimerFired(int32_t);
+  void OnClientTimerFired(int32_t id);
+
+  // Called when the control timer is fired.
+  void OnControlTimerFired(int32_t,
+                           const uint32& control_id,
+                           const uint32& timer_id);
+
+  // Called to print without re-entrancy issues.
+  void OnPrint(int32_t);
+
+  // PDFEngine::Client implementation.
+  virtual void DocumentSizeUpdated(const pp::Size& size);
+  virtual void Invalidate(const pp::Rect& rect);
+  virtual void Scroll(const pp::Point& point);
+  virtual void ScrollToX(int position);
+  virtual void ScrollToY(int position);
+  virtual void ScrollToPage(int page);
+  virtual void NavigateTo(const std::string& url, bool open_in_new_tab);
+  virtual void UpdateCursor(PP_CursorType_Dev cursor);
+  virtual void UpdateTickMarks(const std::vector<pp::Rect>& tickmarks);
+  virtual void NotifyNumberOfFindResultsChanged(int total, bool final_result);
+  virtual void NotifySelectedFindResultChanged(int current_find_index);
+  virtual void GetDocumentPassword(
+      pp::CompletionCallbackWithOutput<pp::Var> callback);
+  virtual void Alert(const std::string& message);
+  virtual bool Confirm(const std::string& message);
+  virtual std::string Prompt(const std::string& question,
+                             const std::string& default_answer);
+  virtual std::string GetURL();
+  virtual void Email(const std::string& to,
+                     const std::string& cc,
+                     const std::string& bcc,
+                     const std::string& subject,
+                     const std::string& body);
+  virtual void Print();
+  virtual void SubmitForm(const std::string& url,
+                          const void* data,
+                          int length);
+  virtual std::string ShowFileSelectionDialog();
+  virtual pp::URLLoader CreateURLLoader();
+  virtual void ScheduleCallback(int id, int delay_in_ms);
+  virtual void SearchString(const base::char16* string,
+                            const base::char16* term,
+                            bool case_sensitive,
+                            std::vector<SearchStringResult>* results);
+  virtual void DocumentPaintOccurred();
+  virtual void DocumentLoadComplete(int page_count);
+  virtual void DocumentLoadFailed();
+  virtual pp::Instance* GetPluginInstance();
+  virtual void DocumentHasUnsupportedFeature(const std::string& feature);
+  virtual void DocumentLoadProgress(uint32 available, uint32 doc_size);
+  virtual void FormTextFieldFocusChange(bool in_focus);
+  virtual bool IsPrintPreview();
+
+  // ControlOwner implementation.
+  virtual void OnEvent(uint32 control_id, uint32 event_id, void* data);
+  virtual void Invalidate(uint32 control_id, const pp::Rect& rc);
+  virtual uint32 ScheduleTimer(uint32 control_id, uint32 timeout_ms);
+  virtual void SetEventCapture(uint32 control_id, bool set_capture);
+  virtual void SetCursor(uint32 control_id, PP_CursorType_Dev cursor_type);
+  virtual pp::Instance* GetInstance();
+
+  bool dont_paint() const { return dont_paint_; }
+  void set_dont_paint(bool dont_paint) { dont_paint_ = dont_paint; }
+
+  // Called by PDFScriptableObject.
+  bool HasScriptableMethod(const pp::Var& method, pp::Var* exception);
+  pp::Var CallScriptableMethod(const pp::Var& method,
+                               const std::vector<pp::Var>& args,
+                               pp::Var* exception);
+
+  // PreviewModeClient::Client implementation.
+  virtual void PreviewDocumentLoadComplete() override;
+  virtual void PreviewDocumentLoadFailed() override;
+
+  // Helper functions for implementing PPP_PDF.
+  void RotateClockwise();
+  void RotateCounterclockwise();
+
+ private:
+  // Called whenever the plugin geometry changes to update the location of the
+  // scrollbars, background parts, and notifies the pdf engine.
+  void OnGeometryChanged(double old_zoom, float old_device_scale);
+
+  // Runs the given JS callback given in |callback|.
+  void RunCallback(int32_t, pp::Var callback);
+
+  void CreateHorizontalScrollbar();
+  void CreateVerticalScrollbar();
+  void DestroyHorizontalScrollbar();
+  void DestroyVerticalScrollbar();
+
+  // Returns the thickness of a scrollbar. This returns the thickness when it's
+  // shown, so for overlay scrollbars it'll still be non-zero.
+  int GetScrollbarThickness();
+
+  // Returns the space we need to reserve for the scrollbar in the plugin area.
+  // If overlay scrollbars are used, this will be 0.
+  int GetScrollbarReservedThickness();
+
+  // Returns true if overlay scrollbars are in use.
+  bool IsOverlayScrollbar();
+
+  // Figures out the location of any background rectangles (i.e. those that
+  // aren't painted by the PDF engine).
+  void CalculateBackgroundParts();
+
+  // Computes document width/height in device pixels, based on current zoom and
+  // device scale
+  int GetDocumentPixelWidth() const;
+  int GetDocumentPixelHeight() const;
+
+  // Draws a rectangle with the specified dimensions and color in our buffer.
+  void FillRect(const pp::Rect& rect, uint32 color);
+
+  std::vector<pp::ImageData> GetThumbnailResources();
+  std::vector<pp::ImageData> GetProgressBarResources(pp::ImageData* background);
+
+  void CreateToolbar(const ToolbarButtonInfo* tb_info, size_t size);
+  int GetToolbarRightOffset();
+  int GetToolbarBottomOffset();
+  void CreateProgressBar();
+  void ConfigureProgressBar();
+  void CreateThumbnails();
+  void CreatePageIndicator(bool always_visible);
+  void ConfigurePageIndicator();
+
+  void PaintOverlayControl(Control* ctrl,
+                           pp::ImageData* image_data,
+                           std::vector<PaintManager::ReadyRect>* ready);
+
+  void LoadUrl(const std::string& url);
+  void LoadPreviewUrl(const std::string& url);
+  void LoadUrlInternal(const std::string& url, pp::URLLoader* loader,
+                       void (Instance::* method)(int32_t));
+
+  // Creates a URL loader and allows it to access all urls, i.e. not just the
+  // frame's origin.
+  pp::URLLoader CreateURLLoaderInternal();
+
+  // Figure out the initial page to display based on #page=N and #nameddest=foo
+  // in the |url_|.
+  // Returns -1 if there is no valid fragment. The returned value is 0-based,
+  // whereas page=N is 1-based.
+  int GetInitialPage(const std::string& url);
+
+  void UpdateToolbarPosition(bool invalidate);
+  void UpdateProgressBarPosition(bool invalidate);
+  void UpdatePageIndicatorPosition(bool invalidate);
+
+  void FormDidOpen(int32_t result);
+
+  std::string GetLocalizedString(PP_ResourceString id);
+
+  void UserMetricsRecordAction(const std::string& action);
+
+  void SaveAs();
+
+  enum ZoomMode {
+    ZOOM_SCALE,  // Standard zooming mode, resize will not affect it.
+    ZOOM_FIT_TO_WIDTH,  // Maintain fit to width on resize.
+    ZOOM_FIT_TO_PAGE,  // Maintain fit to page on resize.
+    ZOOM_AUTO  // Maintain the default auto fitting mode on resize.
+  };
+
+  enum DocumentLoadState {
+    LOAD_STATE_LOADING,
+    LOAD_STATE_COMPLETE,
+    LOAD_STATE_FAILED,
+  };
+
+  // Set new zoom mode and scale. Scale will be ignored if mode != ZOOM_SCALE.
+  void SetZoom(ZoomMode zoom_mode, double scale);
+
+  // Updates internal zoom scale based on the plugin/document geometry and
+  // current mode.
+  void UpdateZoomScale();
+
+  // Simulates how Chrome "snaps" zooming up/down to the next nearest zoom level
+  // when the previous zoom level wasn't an integer.  We do this so that
+  // pressing the zoom buttons has the same effect as the menu buttons, even if
+  // we start from a non-standard zoom level because of fit-width or fit-height.
+  double CalculateZoom(uint32 control_id) const;
+
+  pp::ImageData CreateResourceImage(PP_ResourceImage image_id);
+
+  void DrawText(const pp::Point& top_center, PP_ResourceString id);
+
+  // Set print preview mode, where the current PDF document is reduced to
+  // only one page, and then extended to |page_count| pages with
+  // |page_count| - 1 blank pages.
+  void SetPrintPreviewMode(int page_count);
+
+  // Returns the page number to be displayed in the page indicator. If the
+  // plugin is running within print preview, the displayed number might be
+  // different from the index of the displayed page.
+  int GetPageNumberToDisplay();
+
+  // Process the preview page data information. |src_url| specifies the preview
+  // page data location. The |src_url| is in the format:
+  // chrome://print/id/page_number/print.pdf
+  // |dst_page_index| specifies the blank page index that needs to be replaced
+  // with the new page data.
+  void ProcessPreviewPageInfo(const std::string& src_url, int dst_page_index);
+  // Load the next available preview page into the blank page.
+  void LoadAvailablePreviewPage();
+
+  // Enables autoscroll using origin as a neutral (center) point.
+  void EnableAutoscroll(const pp::Point& origin);
+  // Disables autoscroll and returns to normal functionality.
+  void DisableAutoscroll();
+  // Calculate autoscroll info and return proper mouse pointer and scroll
+  // andjustments.
+  PP_CursorType_Dev CalculateAutoscroll(const pp::Point& mouse_pos);
+
+  void ConfigureNumberImageGenerator();
+
+  NumberImageGenerator* number_image_generator();
+
+  int GetScaled(int x) const;
+
+  pp::ImageData image_data_;
+  // Used when the plugin is embedded in a page and we have to create the loader
+  // ourself.
+  pp::CompletionCallbackFactory<Instance> loader_factory_;
+  pp::URLLoader embed_loader_;
+  pp::URLLoader embed_preview_loader_;
+
+  scoped_ptr<pp::Scrollbar_Dev> h_scrollbar_;
+  scoped_ptr<pp::Scrollbar_Dev> v_scrollbar_;
+  int32 valid_v_range_;
+
+  PP_CursorType_Dev cursor_;  // The current cursor.
+
+  // Used when selecting and dragging beyond the visible portion, in which case
+  // we want to scroll the document.
+  bool timer_pending_;
+  pp::MouseInputEvent last_mouse_event_;
+  pp::CompletionCallbackFactory<Instance> timer_factory_;
+  uint32 current_timer_id_;
+
+  // Size, in pixels, of plugin rectangle.
+  pp::Size plugin_size_;
+  // Size, in DIPs, of plugin rectangle.
+  pp::Size plugin_dip_size_;
+  // Remaining area, in pixels, to render the pdf in after accounting for
+  // scrollbars/toolbars and horizontal centering.
+  pp::Rect available_area_;
+  // Size of entire document in pixels (i.e. if each page is 800 pixels high and
+  // there are 10 pages, the height will be 8000).
+  pp::Size document_size_;
+
+  double zoom_;  // Current zoom factor.
+
+  float device_scale_;  // Current device scale factor.
+  bool printing_enabled_;
+  bool hidpi_enabled_;
+  // True if the plugin is full-page.
+  bool full_;
+  // Zooming mode (none, fit to width, fit to height)
+  ZoomMode zoom_mode_;
+
+  // If true, this means we told the RenderView that we're starting a network
+  // request so that it can start the throbber. We will tell it again once the
+  // document finishes loading.
+  bool did_call_start_loading_;
+
+  // Hold off on painting invalidated requests while this flag is true.
+  bool dont_paint_;
+
+  // Indicates if plugin is in autoscroll mode.
+  bool is_autoscroll_;
+  // Rect for autoscroll anchor.
+  pp::Rect autoscroll_rect_;
+  // Image of the autoscroll anchor and its background.
+  pp::ImageData autoscroll_anchor_;
+  // Autoscrolling deltas in pixels.
+  int autoscroll_x_;
+  int autoscroll_y_;
+
+  // Thickness of a scrollbar.
+  int scrollbar_thickness_;
+
+  // Reserved thickness of a scrollbar. This is how much space the scrollbar
+  // takes from the available area. 0 for overlay.
+  int scrollbar_reserved_thickness_;
+
+  // Used to remember which toolbar is in use
+  const ToolbarButtonInfo* current_tb_info_;
+  size_t current_tb_info_size_;
+
+  PaintManager paint_manager_;
+
+  struct BackgroundPart {
+    pp::Rect location;
+    uint32 color;
+  };
+  std::vector<BackgroundPart> background_parts_;
+
+  struct PrintSettings {
+    PrintSettings() {
+      Clear();
+    }
+    void Clear() {
+      is_printing = false;
+      print_pages_called_ = false;
+      memset(&pepper_print_settings, 0, sizeof(pepper_print_settings));
+    }
+    // This is set to true when PrintBegin is called and false when PrintEnd is
+    // called.
+    bool is_printing;
+    // To know whether this was an actual print operation, so we don't double
+    // count UMA logging.
+    bool print_pages_called_;
+    PP_PrintSettings_Dev pepper_print_settings;
+  };
+
+  PrintSettings print_settings_;
+
+  scoped_ptr<PDFEngine> engine_;
+
+  // This engine is used to render the individual preview page data. This is
+  // used only in print preview mode. This will use |PreviewModeClient|
+  // interface which has very limited access to the pp::Instance.
+  scoped_ptr<PDFEngine> preview_engine_;
+
+  std::string url_;
+
+  scoped_ptr<FadingControls> toolbar_;
+  ThumbnailControl thumbnails_;
+  ProgressControl progress_bar_;
+  uint32 delayed_progress_timer_id_;
+  PageIndicator page_indicator_;
+
+  // Used for creating images from numbers.
+  scoped_ptr<NumberImageGenerator> number_image_generator_;
+
+  // Used for submitting forms.
+  pp::CompletionCallbackFactory<Instance> form_factory_;
+  pp::URLLoader form_loader_;
+
+  // Used for generating callbacks.
+  // TODO(raymes): We don't really need other callback factories we can just
+  // fold them into this one.
+  pp::CompletionCallbackFactory<Instance> callback_factory_;
+
+  // True if we haven't painted the plugin viewport yet.
+  bool first_paint_;
+
+  // True when we've painted at least one page from the document.
+  bool painted_first_page_;
+
+  // True if we should display page indicator, false otherwise
+  bool show_page_indicator_;
+
+  // Callback when the document load completes.
+  pp::Var on_load_callback_;
+  pp::Var on_scroll_callback_;
+  pp::Var on_plugin_size_changed_callback_;
+
+  DocumentLoadState document_load_state_;
+  DocumentLoadState preview_document_load_state_;
+
+  // JavaScript interface to control this instance.
+  // This wraps a PDFScriptableObject in a pp::Var.
+  pp::VarPrivate instance_object_;
+
+  // Used so that we only tell the browser once about an unsupported feature, to
+  // avoid the infobar going up more than once.
+  bool told_browser_about_unsupported_feature_;
+
+  // Keeps track of which unsupported features we reported, so we avoid spamming
+  // the stats if a feature shows up many times per document.
+  std::set<std::string> unsupported_features_reported_;
+
+  // Number of pages in print preview mode, 0 if not in print preview mode.
+  int print_preview_page_count_;
+  std::vector<int> print_preview_page_numbers_;
+
+  // Used to manage loaded print preview page information. A |PreviewPageInfo|
+  // consists of data source url string and the page index in the destination
+  // document.
+  typedef std::pair<std::string, int> PreviewPageInfo;
+  std::queue<PreviewPageInfo> preview_pages_info_;
+
+  // Used to signal the browser about focus changes to trigger the OSK.
+  // TODO(abodenha@chromium.org) Implement full IME support in the plugin.
+  // http://crbug.com/132565
+  scoped_ptr<pp::TextInput_Dev> text_input_;
+};
+
+// This implements the JavaScript class entrypoint for the plugin instance.
+// This class is just a thin wrapper. It delegates relevant methods to Instance.
+class PDFScriptableObject : public pp::deprecated::ScriptableObject {
+ public:
+  explicit PDFScriptableObject(Instance* instance);
+  virtual ~PDFScriptableObject();
+
+  // pp::deprecated::ScriptableObject implementation.
+  virtual bool HasMethod(const pp::Var& method, pp::Var* exception);
+  virtual pp::Var Call(const pp::Var& method,
+                       const std::vector<pp::Var>& args,
+                       pp::Var* exception);
+
+ private:
+  Instance* instance_;
+};
+
+}  // namespace chrome_pdf
+
+#endif  // PDF_INSTANCE_H_
diff --git a/xfa_test/pdf/number_image_generator.cc b/xfa_test/pdf/number_image_generator.cc
new file mode 100644
index 0000000000..289691513c
--- /dev/null
+++ b/xfa_test/pdf/number_image_generator.cc
@@ -0,0 +1,81 @@
+// Copyright (c) 2012 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "pdf/number_image_generator.h"
+
+#include "base/logging.h"
+#include "base/strings/string_util.h"
+#include "pdf/draw_utils.h"
+#include "pdf/instance.h"
+
+namespace chrome_pdf {
+
+const int kPageNumberSeparator = 0;
+const int kPageNumberOriginX = 8;
+const int kPageNumberOriginY = 4;
+
+NumberImageGenerator::NumberImageGenerator(Instance* instance)
+    : instance_(instance),
+      device_scale_(1.0f) {
+}
+
+NumberImageGenerator::~NumberImageGenerator() {
+}
+
+void NumberImageGenerator::Configure(const pp::ImageData& number_background,
+    const std::vector<pp::ImageData>& number_images, float device_scale) {
+  number_background_ = number_background;
+  number_images_ = number_images;
+  device_scale_ = device_scale;
+}
+
+void NumberImageGenerator::GenerateImage(
+    int page_number, pp::ImageData* image) {
+  char buffer[12];
+  base::snprintf(buffer, sizeof(buffer), "%u", page_number);
+  int extra_width = 0;
+  DCHECK(number_images_.size() >= 10);
+  DCHECK(!number_background_.is_null());
+  for (size_t i = 1; i < strlen(buffer); ++i) {
+    int index = buffer[i] - '0';
+    extra_width += number_images_[index].size().width();
+    extra_width += static_cast<int>(kPageNumberSeparator * device_scale_);
+  }
+
+  *image = pp::ImageData(
+      instance_,
+      PP_IMAGEDATAFORMAT_BGRA_PREMUL,
+      pp::Size(number_background_.size().width() + extra_width,
+               number_background_.size().height()),
+      false);
+
+  int stretch_point = number_background_.size().width() / 2;
+
+  pp::Rect src_rc(0, 0, stretch_point, number_background_.size().height());
+  pp::Rect dest_rc(src_rc);
+  CopyImage(number_background_, src_rc, image, dest_rc, false);
+  src_rc.Offset(number_background_.size().width() - stretch_point, 0);
+  dest_rc.Offset(image->size().width() - stretch_point, 0);
+  CopyImage(number_background_, src_rc, image, dest_rc, false);
+  src_rc = pp::Rect(stretch_point, 0, 1, number_background_.size().height());
+  dest_rc = src_rc;
+  dest_rc.set_width(extra_width + 1);
+  CopyImage(number_background_, src_rc, image, dest_rc, true);
+
+  pp::Point origin(static_cast<int>(kPageNumberOriginX * device_scale_),
+                   static_cast<int>(kPageNumberOriginY * device_scale_));
+  for (size_t i = 0; i < strlen(buffer); ++i) {
+    int index = buffer[i] - '0';
+    CopyImage(
+        number_images_[index],
+        pp::Rect(pp::Point(), number_images_[index].size()),
+        image, pp::Rect(origin, number_images_[index].size()), false);
+    origin += pp::Point(
+        number_images_[index].size().width() +
+        static_cast<int>(kPageNumberSeparator * device_scale_), 0);
+  }
+}
+
+}  // namespace chrome_pdf
+
diff --git a/xfa_test/pdf/number_image_generator.h b/xfa_test/pdf/number_image_generator.h
new file mode 100644
index 0000000000..51ffd3ec3d
--- /dev/null
+++ b/xfa_test/pdf/number_image_generator.h
@@ -0,0 +1,37 @@
+// Copyright (c) 2012 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef PDF_NUMBER_IMAGE_GENERATOR_H
+#define PDF_NUMBER_IMAGE_GENERATOR_H
+
+#include <vector>
+
+#include "ppapi/cpp/image_data.h"
+
+namespace chrome_pdf {
+
+class Instance;
+
+class NumberImageGenerator {
+ public:
+  explicit NumberImageGenerator(Instance* instance);
+  virtual ~NumberImageGenerator();
+
+  void Configure(const pp::ImageData& number_background,
+                 const std::vector<pp::ImageData>& number_images,
+                 float device_scale);
+
+  void GenerateImage(int page_number, pp::ImageData* image);
+
+ private:
+  Instance* instance_;
+  pp::ImageData number_background_;
+  std::vector<pp::ImageData> number_images_;
+  float device_scale_;
+};
+
+}  // namespace chrome_pdf
+
+#endif  // PDF_NUMBER_IMAGE_GENERATOR_H
+
diff --git a/xfa_test/pdf/out_of_process_instance.cc b/xfa_test/pdf/out_of_process_instance.cc
new file mode 100644
index 0000000000..d627dc2d79
--- /dev/null
+++ b/xfa_test/pdf/out_of_process_instance.cc
@@ -0,0 +1,1369 @@
+// Copyright (c) 2012 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "pdf/out_of_process_instance.h"
+
+#include <algorithm>  // for min/max()
+#define _USE_MATH_DEFINES  // for M_PI
+#include <cmath>      // for log() and pow()
+#include <math.h>
+#include <list>
+
+#include "base/json/json_reader.h"
+#include "base/json/json_writer.h"
+#include "base/logging.h"
+#include "base/strings/string_number_conversions.h"
+#include "base/strings/string_split.h"
+#include "base/strings/string_util.h"
+#include "base/values.h"
+#include "chrome/common/content_restriction.h"
+#include "net/base/escape.h"
+#include "pdf/pdf.h"
+#include "ppapi/c/dev/ppb_cursor_control_dev.h"
+#include "ppapi/c/pp_errors.h"
+#include "ppapi/c/pp_rect.h"
+#include "ppapi/c/private/ppb_instance_private.h"
+#include "ppapi/c/private/ppp_pdf.h"
+#include "ppapi/c/trusted/ppb_url_loader_trusted.h"
+#include "ppapi/cpp/core.h"
+#include "ppapi/cpp/dev/memory_dev.h"
+#include "ppapi/cpp/dev/text_input_dev.h"
+#include "ppapi/cpp/dev/url_util_dev.h"
+#include "ppapi/cpp/module.h"
+#include "ppapi/cpp/point.h"
+#include "ppapi/cpp/private/pdf.h"
+#include "ppapi/cpp/private/var_private.h"
+#include "ppapi/cpp/rect.h"
+#include "ppapi/cpp/resource.h"
+#include "ppapi/cpp/url_request_info.h"
+#include "ppapi/cpp/var_array.h"
+#include "ppapi/cpp/var_dictionary.h"
+#include "ui/events/keycodes/keyboard_codes.h"
+
+#if defined(OS_MACOSX)
+#include "base/mac/mac_util.h"
+#endif
+
+namespace chrome_pdf {
+
+const char kChromePrint[] = "chrome://print/";
+const char kChromeExtension[] =
+    "chrome-extension://mhjfbmdgcfjbbpaeojofohoefgiehjai";
+
+// Dictionary Value key names for the document accessibility info
+const char kAccessibleNumberOfPages[] = "numberOfPages";
+const char kAccessibleLoaded[] = "loaded";
+const char kAccessibleCopyable[] = "copyable";
+
+// Constants used in handling postMessage() messages.
+const char kType[] = "type";
+// Viewport message arguments. (Page -> Plugin).
+const char kJSViewportType[] = "viewport";
+const char kJSXOffset[] = "xOffset";
+const char kJSYOffset[] = "yOffset";
+const char kJSZoom[] = "zoom";
+// Stop scrolling message (Page -> Plugin)
+const char kJSStopScrollingType[] = "stopScrolling";
+// Document dimension arguments (Plugin -> Page).
+const char kJSDocumentDimensionsType[] = "documentDimensions";
+const char kJSDocumentWidth[] = "width";
+const char kJSDocumentHeight[] = "height";
+const char kJSPageDimensions[] = "pageDimensions";
+const char kJSPageX[] = "x";
+const char kJSPageY[] = "y";
+const char kJSPageWidth[] = "width";
+const char kJSPageHeight[] = "height";
+// Document load progress arguments (Plugin -> Page)
+const char kJSLoadProgressType[] = "loadProgress";
+const char kJSProgressPercentage[] = "progress";
+// Get password arguments (Plugin -> Page)
+const char kJSGetPasswordType[] = "getPassword";
+// Get password complete arguments (Page -> Plugin)
+const char kJSGetPasswordCompleteType[] = "getPasswordComplete";
+const char kJSPassword[] = "password";
+// Print (Page -> Plugin)
+const char kJSPrintType[] = "print";
+// Go to page (Plugin -> Page)
+const char kJSGoToPageType[] = "goToPage";
+const char kJSPageNumber[] = "page";
+// Reset print preview mode (Page -> Plugin)
+const char kJSResetPrintPreviewModeType[] = "resetPrintPreviewMode";
+const char kJSPrintPreviewUrl[] = "url";
+const char kJSPrintPreviewGrayscale[] = "grayscale";
+const char kJSPrintPreviewPageCount[] = "pageCount";
+// Load preview page (Page -> Plugin)
+const char kJSLoadPreviewPageType[] = "loadPreviewPage";
+const char kJSPreviewPageUrl[] = "url";
+const char kJSPreviewPageIndex[] = "index";
+// Set scroll position (Plugin -> Page)
+const char kJSSetScrollPositionType[] = "setScrollPosition";
+const char kJSPositionX[] = "x";
+const char kJSPositionY[] = "y";
+// Set translated strings (Plugin -> Page)
+const char kJSSetTranslatedStringsType[] = "setTranslatedStrings";
+const char kJSGetPasswordString[] = "getPasswordString";
+const char kJSLoadingString[] = "loadingString";
+const char kJSLoadFailedString[] = "loadFailedString";
+// Request accessibility JSON data (Page -> Plugin)
+const char kJSGetAccessibilityJSONType[] = "getAccessibilityJSON";
+const char kJSAccessibilityPageNumber[] = "page";
+// Reply with accessibility JSON data (Plugin -> Page)
+const char kJSGetAccessibilityJSONReplyType[] = "getAccessibilityJSONReply";
+const char kJSAccessibilityJSON[] = "json";
+// Cancel the stream URL request (Plugin -> Page)
+const char kJSCancelStreamUrlType[] = "cancelStreamUrl";
+// Navigate to the given URL (Plugin -> Page)
+const char kJSNavigateType[] = "navigate";
+const char kJSNavigateUrl[] = "url";
+const char kJSNavigateNewTab[] = "newTab";
+// Open the email editor with the given parameters (Plugin -> Page)
+const char kJSEmailType[] = "email";
+const char kJSEmailTo[] = "to";
+const char kJSEmailCc[] = "cc";
+const char kJSEmailBcc[] = "bcc";
+const char kJSEmailSubject[] = "subject";
+const char kJSEmailBody[] = "body";
+// Rotation (Page -> Plugin)
+const char kJSRotateClockwiseType[] = "rotateClockwise";
+const char kJSRotateCounterclockwiseType[] = "rotateCounterclockwise";
+// Select all text in the document (Page -> Plugin)
+const char kJSSelectAllType[] = "selectAll";
+
+const int kFindResultCooldownMs = 100;
+
+const double kMinZoom = 0.01;
+
+namespace {
+
+static const char kPPPPdfInterface[] = PPP_PDF_INTERFACE_1;
+
+PP_Var GetLinkAtPosition(PP_Instance instance, PP_Point point) {
+  pp::Var var;
+  void* object = pp::Instance::GetPerInstanceObject(instance, kPPPPdfInterface);
+  if (object) {
+    var = static_cast<OutOfProcessInstance*>(object)->GetLinkAtPosition(
+        pp::Point(point));
+  }
+  return var.Detach();
+}
+
+void Transform(PP_Instance instance, PP_PrivatePageTransformType type) {
+  void* object =
+      pp::Instance::GetPerInstanceObject(instance, kPPPPdfInterface);
+  if (object) {
+    OutOfProcessInstance* obj_instance =
+        static_cast<OutOfProcessInstance*>(object);
+    switch (type) {
+      case PP_PRIVATEPAGETRANSFORMTYPE_ROTATE_90_CW:
+        obj_instance->RotateClockwise();
+        break;
+      case PP_PRIVATEPAGETRANSFORMTYPE_ROTATE_90_CCW:
+        obj_instance->RotateCounterclockwise();
+        break;
+    }
+  }
+}
+
+const PPP_Pdf ppp_private = {
+  &GetLinkAtPosition,
+  &Transform
+};
+
+int ExtractPrintPreviewPageIndex(const std::string& src_url) {
+  // Sample |src_url| format: chrome://print/id/page_index/print.pdf
+  std::vector<std::string> url_substr;
+  base::SplitString(src_url.substr(strlen(kChromePrint)), '/', &url_substr);
+  if (url_substr.size() != 3)
+    return -1;
+
+  if (url_substr[2] != "print.pdf")
+    return -1;
+
+  int page_index = 0;
+  if (!base::StringToInt(url_substr[1], &page_index))
+    return -1;
+  return page_index;
+}
+
+bool IsPrintPreviewUrl(const std::string& url) {
+  return url.substr(0, strlen(kChromePrint)) == kChromePrint;
+}
+
+void ScalePoint(float scale, pp::Point* point) {
+  point->set_x(static_cast<int>(point->x() * scale));
+  point->set_y(static_cast<int>(point->y() * scale));
+}
+
+void ScaleRect(float scale, pp::Rect* rect) {
+  int left = static_cast<int>(floorf(rect->x() * scale));
+  int top = static_cast<int>(floorf(rect->y() * scale));
+  int right = static_cast<int>(ceilf((rect->x() + rect->width()) * scale));
+  int bottom = static_cast<int>(ceilf((rect->y() + rect->height()) * scale));
+  rect->SetRect(left, top, right - left, bottom - top);
+}
+
+// TODO(raymes): Remove this dependency on VarPrivate/InstancePrivate. It's
+// needed right now to do a synchronous call to JavaScript, but we could easily
+// replace this with a custom PPB_PDF function.
+pp::Var ModalDialog(const pp::Instance* instance,
+                    const std::string& type,
+                    const std::string& message,
+                    const std::string& default_answer) {
+  const PPB_Instance_Private* interface =
+      reinterpret_cast<const PPB_Instance_Private*>(
+          pp::Module::Get()->GetBrowserInterface(
+              PPB_INSTANCE_PRIVATE_INTERFACE));
+  pp::VarPrivate window(pp::PASS_REF,
+      interface->GetWindowObject(instance->pp_instance()));
+  if (default_answer.empty())
+    return window.Call(type, message);
+  else
+    return window.Call(type, message, default_answer);
+}
+
+}  // namespace
+
+OutOfProcessInstance::OutOfProcessInstance(PP_Instance instance)
+    : pp::Instance(instance),
+      pp::Find_Private(this),
+      pp::Printing_Dev(this),
+      pp::Selection_Dev(this),
+      cursor_(PP_CURSORTYPE_POINTER),
+      zoom_(1.0),
+      device_scale_(1.0),
+      printing_enabled_(true),
+      full_(false),
+      paint_manager_(this, this, true),
+      first_paint_(true),
+      document_load_state_(LOAD_STATE_LOADING),
+      preview_document_load_state_(LOAD_STATE_COMPLETE),
+      uma_(this),
+      told_browser_about_unsupported_feature_(false),
+      print_preview_page_count_(0),
+      last_progress_sent_(0),
+      recently_sent_find_update_(false),
+      received_viewport_message_(false),
+      did_call_start_loading_(false),
+      stop_scrolling_(false) {
+  loader_factory_.Initialize(this);
+  timer_factory_.Initialize(this);
+  form_factory_.Initialize(this);
+  print_callback_factory_.Initialize(this);
+  engine_.reset(PDFEngine::Create(this));
+  pp::Module::Get()->AddPluginInterface(kPPPPdfInterface, &ppp_private);
+  AddPerInstanceObject(kPPPPdfInterface, this);
+
+  RequestFilteringInputEvents(PP_INPUTEVENT_CLASS_MOUSE);
+  RequestFilteringInputEvents(PP_INPUTEVENT_CLASS_KEYBOARD);
+  RequestFilteringInputEvents(PP_INPUTEVENT_CLASS_TOUCH);
+}
+
+OutOfProcessInstance::~OutOfProcessInstance() {
+  RemovePerInstanceObject(kPPPPdfInterface, this);
+}
+
+bool OutOfProcessInstance::Init(uint32_t argc,
+                                const char* argn[],
+                                const char* argv[]) {
+  // Check if the PDF is being loaded in the PDF chrome extension. We only allow
+  // the plugin to be put into "full frame" mode when it is being loaded in the
+  // extension because this enables some features that we don't want pages
+  // abusing outside of the extension.
+  pp::Var document_url_var = pp::URLUtil_Dev::Get()->GetDocumentURL(this);
+  std::string document_url = document_url_var.is_string() ?
+      document_url_var.AsString() : std::string();
+  std::string extension_url = std::string(kChromeExtension);
+  bool in_extension =
+      !document_url.compare(0, extension_url.size(), extension_url);
+
+  if (in_extension) {
+    // Check if the plugin is full frame. This is passed in from JS.
+    for (uint32_t i = 0; i < argc; ++i) {
+      if (strcmp(argn[i], "full-frame") == 0) {
+        full_ = true;
+        break;
+      }
+    }
+  }
+
+  // Only allow the plugin to handle find requests if it is full frame.
+  if (full_)
+    SetPluginToHandleFindRequests();
+
+  // Send translated strings to the extension where they will be displayed.
+  // TODO(raymes): It would be better to get these in the extension directly
+  // through an API but no such API currently exists.
+  pp::VarDictionary translated_strings;
+  translated_strings.Set(kType, kJSSetTranslatedStringsType);
+  translated_strings.Set(kJSGetPasswordString,
+      GetLocalizedString(PP_RESOURCESTRING_PDFGETPASSWORD));
+  translated_strings.Set(kJSLoadingString,
+      GetLocalizedString(PP_RESOURCESTRING_PDFLOADING));
+  translated_strings.Set(kJSLoadFailedString,
+      GetLocalizedString(PP_RESOURCESTRING_PDFLOAD_FAILED));
+  PostMessage(translated_strings);
+
+  text_input_.reset(new pp::TextInput_Dev(this));
+
+  const char* stream_url = NULL;
+  const char* original_url = NULL;
+  const char* headers = NULL;
+  for (uint32_t i = 0; i < argc; ++i) {
+    if (strcmp(argn[i], "src") == 0)
+      original_url = argv[i];
+    else if (strcmp(argn[i], "stream-url") == 0)
+      stream_url = argv[i];
+    else if (strcmp(argn[i], "headers") == 0)
+      headers = argv[i];
+  }
+
+  // TODO(raymes): This is a hack to ensure that if no headers are passed in
+  // then we get the right MIME type. When the in process plugin is removed we
+  // can fix the document loader properly and remove this hack.
+  if (!headers || strcmp(headers, "") == 0)
+    headers = "content-type: application/pdf";
+
+  if (!original_url)
+    return false;
+
+  if (!stream_url)
+    stream_url = original_url;
+
+  // If we're in print preview mode we don't need to load the document yet.
+  // A |kJSResetPrintPreviewModeType| message will be sent to the plugin letting
+  // it know the url to load. By not loading here we avoid loading the same
+  // document twice.
+  if (IsPrintPreviewUrl(original_url))
+    return true;
+
+  LoadUrl(stream_url);
+  url_ = original_url;
+  return engine_->New(original_url, headers);
+}
+
+void OutOfProcessInstance::HandleMessage(const pp::Var& message) {
+  pp::VarDictionary dict(message);
+  if (!dict.Get(kType).is_string()) {
+    NOTREACHED();
+    return;
+  }
+
+  std::string type = dict.Get(kType).AsString();
+
+  if (type == kJSViewportType &&
+      dict.Get(pp::Var(kJSXOffset)).is_int() &&
+      dict.Get(pp::Var(kJSYOffset)).is_int() &&
+      dict.Get(pp::Var(kJSZoom)).is_number()) {
+    received_viewport_message_ = true;
+    stop_scrolling_ = false;
+    double zoom = dict.Get(pp::Var(kJSZoom)).AsDouble();
+    pp::Point scroll_offset(dict.Get(pp::Var(kJSXOffset)).AsInt(),
+                            dict.Get(pp::Var(kJSYOffset)).AsInt());
+
+    // Bound the input parameters.
+    zoom = std::max(kMinZoom, zoom);
+    SetZoom(zoom);
+    scroll_offset = BoundScrollOffsetToDocument(scroll_offset);
+    engine_->ScrolledToXPosition(scroll_offset.x() * device_scale_);
+    engine_->ScrolledToYPosition(scroll_offset.y() * device_scale_);
+  } else if (type == kJSGetPasswordCompleteType &&
+             dict.Get(pp::Var(kJSPassword)).is_string()) {
+    if (password_callback_) {
+      pp::CompletionCallbackWithOutput<pp::Var> callback = *password_callback_;
+      password_callback_.reset();
+      *callback.output() = dict.Get(pp::Var(kJSPassword)).pp_var();
+      callback.Run(PP_OK);
+    } else {
+      NOTREACHED();
+    }
+  } else if (type == kJSPrintType) {
+    Print();
+  } else if (type == kJSRotateClockwiseType) {
+    RotateClockwise();
+  } else if (type == kJSRotateCounterclockwiseType) {
+    RotateCounterclockwise();
+  } else if (type == kJSSelectAllType) {
+    engine_->SelectAll();
+  } else if (type == kJSResetPrintPreviewModeType &&
+             dict.Get(pp::Var(kJSPrintPreviewUrl)).is_string() &&
+             dict.Get(pp::Var(kJSPrintPreviewGrayscale)).is_bool() &&
+             dict.Get(pp::Var(kJSPrintPreviewPageCount)).is_int()) {
+    url_ = dict.Get(pp::Var(kJSPrintPreviewUrl)).AsString();
+    preview_pages_info_ = std::queue<PreviewPageInfo>();
+    preview_document_load_state_ = LOAD_STATE_COMPLETE;
+    document_load_state_ = LOAD_STATE_LOADING;
+    LoadUrl(url_);
+    preview_engine_.reset();
+    engine_.reset(PDFEngine::Create(this));
+    engine_->SetGrayscale(dict.Get(pp::Var(kJSPrintPreviewGrayscale)).AsBool());
+    engine_->New(url_.c_str());
+
+    print_preview_page_count_ =
+        std::max(dict.Get(pp::Var(kJSPrintPreviewPageCount)).AsInt(), 0);
+
+    paint_manager_.InvalidateRect(pp::Rect(pp::Point(), plugin_size_));
+  } else if (type == kJSLoadPreviewPageType &&
+             dict.Get(pp::Var(kJSPreviewPageUrl)).is_string() &&
+             dict.Get(pp::Var(kJSPreviewPageIndex)).is_int()) {
+    ProcessPreviewPageInfo(dict.Get(pp::Var(kJSPreviewPageUrl)).AsString(),
+                           dict.Get(pp::Var(kJSPreviewPageIndex)).AsInt());
+  } else if (type == kJSGetAccessibilityJSONType) {
+    pp::VarDictionary reply;
+    reply.Set(pp::Var(kType), pp::Var(kJSGetAccessibilityJSONReplyType));
+    if (dict.Get(pp::Var(kJSAccessibilityPageNumber)).is_int()) {
+      int page = dict.Get(pp::Var(kJSAccessibilityPageNumber)).AsInt();
+      reply.Set(pp::Var(kJSAccessibilityJSON),
+                        pp::Var(engine_->GetPageAsJSON(page)));
+    } else {
+      base::DictionaryValue node;
+      node.SetInteger(kAccessibleNumberOfPages, engine_->GetNumberOfPages());
+      node.SetBoolean(kAccessibleLoaded,
+                      document_load_state_ != LOAD_STATE_LOADING);
+      bool has_permissions =
+          engine_->HasPermission(PDFEngine::PERMISSION_COPY) ||
+          engine_->HasPermission(PDFEngine::PERMISSION_COPY_ACCESSIBLE);
+      node.SetBoolean(kAccessibleCopyable, has_permissions);
+      std::string json;
+      base::JSONWriter::Write(&node, &json);
+      reply.Set(pp::Var(kJSAccessibilityJSON), pp::Var(json));
+    }
+    PostMessage(reply);
+  } else if (type == kJSStopScrollingType) {
+    stop_scrolling_ = true;
+  } else {
+    NOTREACHED();
+  }
+}
+
+bool OutOfProcessInstance::HandleInputEvent(
+    const pp::InputEvent& event) {
+  // To simplify things, convert the event into device coordinates if it is
+  // a mouse event.
+  pp::InputEvent event_device_res(event);
+  {
+    pp::MouseInputEvent mouse_event(event);
+    if (!mouse_event.is_null()) {
+      pp::Point point = mouse_event.GetPosition();
+      pp::Point movement = mouse_event.GetMovement();
+      ScalePoint(device_scale_, &point);
+      ScalePoint(device_scale_, &movement);
+      mouse_event = pp::MouseInputEvent(
+          this,
+          event.GetType(),
+          event.GetTimeStamp(),
+          event.GetModifiers(),
+          mouse_event.GetButton(),
+          point,
+          mouse_event.GetClickCount(),
+          movement);
+      event_device_res = mouse_event;
+    }
+  }
+
+  pp::InputEvent offset_event(event_device_res);
+  switch (offset_event.GetType()) {
+    case PP_INPUTEVENT_TYPE_MOUSEDOWN:
+    case PP_INPUTEVENT_TYPE_MOUSEUP:
+    case PP_INPUTEVENT_TYPE_MOUSEMOVE:
+    case PP_INPUTEVENT_TYPE_MOUSEENTER:
+    case PP_INPUTEVENT_TYPE_MOUSELEAVE: {
+      pp::MouseInputEvent mouse_event(event_device_res);
+      pp::MouseInputEvent mouse_event_dip(event);
+      pp::Point point = mouse_event.GetPosition();
+      point.set_x(point.x() - available_area_.x());
+      offset_event = pp::MouseInputEvent(
+          this,
+          event.GetType(),
+          event.GetTimeStamp(),
+          event.GetModifiers(),
+          mouse_event.GetButton(),
+          point,
+          mouse_event.GetClickCount(),
+          mouse_event.GetMovement());
+      break;
+    }
+    default:
+      break;
+  }
+  if (engine_->HandleEvent(offset_event))
+    return true;
+
+  // TODO(raymes): Implement this scroll behavior in JS:
+  // When click+dragging, scroll the document correctly.
+
+  // Return true for unhandled clicks so the plugin takes focus.
+  return (event.GetType() == PP_INPUTEVENT_TYPE_MOUSEDOWN);
+}
+
+void OutOfProcessInstance::DidChangeView(const pp::View& view) {
+  pp::Rect view_rect(view.GetRect());
+  float old_device_scale = device_scale_;
+  float device_scale = view.GetDeviceScale();
+  pp::Size view_device_size(view_rect.width() * device_scale,
+                            view_rect.height() * device_scale);
+
+  if (view_device_size != plugin_size_ || device_scale != device_scale_) {
+    device_scale_ = device_scale;
+    plugin_dip_size_ = view_rect.size();
+    plugin_size_ = view_device_size;
+
+    paint_manager_.SetSize(view_device_size, device_scale_);
+
+    pp::Size new_image_data_size = PaintManager::GetNewContextSize(
+        image_data_.size(),
+        plugin_size_);
+    if (new_image_data_size != image_data_.size()) {
+      image_data_ = pp::ImageData(this,
+                                  PP_IMAGEDATAFORMAT_BGRA_PREMUL,
+                                  new_image_data_size,
+                                  false);
+      first_paint_ = true;
+    }
+
+    if (image_data_.is_null()) {
+      DCHECK(plugin_size_.IsEmpty());
+      return;
+    }
+
+    OnGeometryChanged(zoom_, old_device_scale);
+  }
+
+  if (!stop_scrolling_) {
+    pp::Point scroll_offset(
+        BoundScrollOffsetToDocument(view.GetScrollOffset()));
+    engine_->ScrolledToXPosition(scroll_offset.x() * device_scale_);
+    engine_->ScrolledToYPosition(scroll_offset.y() * device_scale_);
+  }
+}
+
+pp::Var OutOfProcessInstance::GetLinkAtPosition(
+    const pp::Point& point) {
+  pp::Point offset_point(point);
+  ScalePoint(device_scale_, &offset_point);
+  offset_point.set_x(offset_point.x() - available_area_.x());
+  return engine_->GetLinkAtPosition(offset_point);
+}
+
+pp::Var OutOfProcessInstance::GetSelectedText(bool html) {
+  if (html || !engine_->HasPermission(PDFEngine::PERMISSION_COPY))
+    return pp::Var();
+  return engine_->GetSelectedText();
+}
+
+uint32_t OutOfProcessInstance::QuerySupportedPrintOutputFormats() {
+  return engine_->QuerySupportedPrintOutputFormats();
+}
+
+int32_t OutOfProcessInstance::PrintBegin(
+    const PP_PrintSettings_Dev& print_settings) {
+  // For us num_pages is always equal to the number of pages in the PDF
+  // document irrespective of the printable area.
+  int32_t ret = engine_->GetNumberOfPages();
+  if (!ret)
+    return 0;
+
+  uint32_t supported_formats = engine_->QuerySupportedPrintOutputFormats();
+  if ((print_settings.format & supported_formats) == 0)
+    return 0;
+
+  print_settings_.is_printing = true;
+  print_settings_.pepper_print_settings = print_settings;
+  engine_->PrintBegin();
+  return ret;
+}
+
+pp::Resource OutOfProcessInstance::PrintPages(
+    const PP_PrintPageNumberRange_Dev* page_ranges,
+    uint32_t page_range_count) {
+  if (!print_settings_.is_printing)
+    return pp::Resource();
+
+  print_settings_.print_pages_called_ = true;
+  return engine_->PrintPages(page_ranges, page_range_count,
+                             print_settings_.pepper_print_settings);
+}
+
+void OutOfProcessInstance::PrintEnd() {
+  if (print_settings_.print_pages_called_)
+    UserMetricsRecordAction("PDF.PrintPage");
+  print_settings_.Clear();
+  engine_->PrintEnd();
+}
+
+bool OutOfProcessInstance::IsPrintScalingDisabled() {
+  return !engine_->GetPrintScaling();
+}
+
+bool OutOfProcessInstance::StartFind(const std::string& text,
+                                                 bool case_sensitive) {
+  engine_->StartFind(text.c_str(), case_sensitive);
+  return true;
+}
+
+void OutOfProcessInstance::SelectFindResult(bool forward) {
+  engine_->SelectFindResult(forward);
+}
+
+void OutOfProcessInstance::StopFind() {
+  engine_->StopFind();
+  tickmarks_.clear();
+  SetTickmarks(tickmarks_);
+}
+
+void OutOfProcessInstance::OnPaint(
+    const std::vector<pp::Rect>& paint_rects,
+    std::vector<PaintManager::ReadyRect>* ready,
+    std::vector<pp::Rect>* pending) {
+  if (image_data_.is_null()) {
+    DCHECK(plugin_size_.IsEmpty());
+    return;
+  }
+  if (first_paint_) {
+    first_paint_ = false;
+    pp::Rect rect = pp::Rect(pp::Point(), image_data_.size());
+    FillRect(rect, kBackgroundColor);
+    ready->push_back(PaintManager::ReadyRect(rect, image_data_, true));
+  }
+
+  if (!received_viewport_message_)
+    return;
+
+  engine_->PrePaint();
+
+  for (size_t i = 0; i < paint_rects.size(); i++) {
+    // Intersect with plugin area since there could be pending invalidates from
+    // when the plugin area was larger.
+    pp::Rect rect =
+        paint_rects[i].Intersect(pp::Rect(pp::Point(), plugin_size_));
+    if (rect.IsEmpty())
+      continue;
+
+    pp::Rect pdf_rect = available_area_.Intersect(rect);
+    if (!pdf_rect.IsEmpty()) {
+      pdf_rect.Offset(available_area_.x() * -1, 0);
+
+      std::vector<pp::Rect> pdf_ready;
+      std::vector<pp::Rect> pdf_pending;
+      engine_->Paint(pdf_rect, &image_data_, &pdf_ready, &pdf_pending);
+      for (size_t j = 0; j < pdf_ready.size(); ++j) {
+        pdf_ready[j].Offset(available_area_.point());
+        ready->push_back(
+            PaintManager::ReadyRect(pdf_ready[j], image_data_, false));
+      }
+      for (size_t j = 0; j < pdf_pending.size(); ++j) {
+        pdf_pending[j].Offset(available_area_.point());
+        pending->push_back(pdf_pending[j]);
+      }
+    }
+
+    for (size_t j = 0; j < background_parts_.size(); ++j) {
+      pp::Rect intersection = background_parts_[j].location.Intersect(rect);
+      if (!intersection.IsEmpty()) {
+        FillRect(intersection, background_parts_[j].color);
+        ready->push_back(
+            PaintManager::ReadyRect(intersection, image_data_, false));
+      }
+    }
+  }
+
+  engine_->PostPaint();
+}
+
+void OutOfProcessInstance::DidOpen(int32_t result) {
+  if (result == PP_OK) {
+    if (!engine_->HandleDocumentLoad(embed_loader_)) {
+      document_load_state_ = LOAD_STATE_LOADING;
+      DocumentLoadFailed();
+    }
+  } else if (result != PP_ERROR_ABORTED) {  // Can happen in tests.
+    NOTREACHED();
+    DocumentLoadFailed();
+  }
+
+  // If it's a progressive load, cancel the stream URL request so that requests
+  // can be made on the original URL.
+  // TODO(raymes): Make this clearer once the in-process plugin is deleted.
+  if (engine_->IsProgressiveLoad()) {
+    pp::VarDictionary message;
+    message.Set(kType, kJSCancelStreamUrlType);
+    PostMessage(message);
+  }
+}
+
+void OutOfProcessInstance::DidOpenPreview(int32_t result) {
+  if (result == PP_OK) {
+    preview_engine_.reset(PDFEngine::Create(new PreviewModeClient(this)));
+    preview_engine_->HandleDocumentLoad(embed_preview_loader_);
+  } else {
+    NOTREACHED();
+  }
+}
+
+void OutOfProcessInstance::OnClientTimerFired(int32_t id) {
+  engine_->OnCallback(id);
+}
+
+void OutOfProcessInstance::CalculateBackgroundParts() {
+  background_parts_.clear();
+  int left_width = available_area_.x();
+  int right_start = available_area_.right();
+  int right_width = abs(plugin_size_.width() - available_area_.right());
+  int bottom = std::min(available_area_.bottom(), plugin_size_.height());
+
+  // Add the left, right, and bottom rectangles.  Note: we assume only
+  // horizontal centering.
+  BackgroundPart part = {
+    pp::Rect(0, 0, left_width, bottom),
+    kBackgroundColor
+  };
+  if (!part.location.IsEmpty())
+    background_parts_.push_back(part);
+  part.location = pp::Rect(right_start, 0, right_width, bottom);
+  if (!part.location.IsEmpty())
+    background_parts_.push_back(part);
+  part.location = pp::Rect(
+      0, bottom, plugin_size_.width(), plugin_size_.height() - bottom);
+  if (!part.location.IsEmpty())
+    background_parts_.push_back(part);
+}
+
+int OutOfProcessInstance::GetDocumentPixelWidth() const {
+  return static_cast<int>(ceil(document_size_.width() * zoom_ * device_scale_));
+}
+
+int OutOfProcessInstance::GetDocumentPixelHeight() const {
+  return static_cast<int>(
+      ceil(document_size_.height() * zoom_ * device_scale_));
+}
+
+void OutOfProcessInstance::FillRect(const pp::Rect& rect, uint32 color) {
+  DCHECK(!image_data_.is_null() || rect.IsEmpty());
+  uint32* buffer_start = static_cast<uint32*>(image_data_.data());
+  int stride = image_data_.stride();
+  uint32* ptr = buffer_start + rect.y() * stride / 4 + rect.x();
+  int height = rect.height();
+  int width = rect.width();
+  for (int y = 0; y < height; ++y) {
+    for (int x = 0; x < width; ++x)
+      *(ptr + x) = color;
+    ptr += stride /4;
+  }
+}
+
+void OutOfProcessInstance::DocumentSizeUpdated(const pp::Size& size) {
+  document_size_ = size;
+
+  pp::VarDictionary dimensions;
+  dimensions.Set(kType, kJSDocumentDimensionsType);
+  dimensions.Set(kJSDocumentWidth, pp::Var(document_size_.width()));
+  dimensions.Set(kJSDocumentHeight, pp::Var(document_size_.height()));
+  pp::VarArray page_dimensions_array;
+  int num_pages = engine_->GetNumberOfPages();
+  for (int i = 0; i < num_pages; ++i) {
+    pp::Rect page_rect = engine_->GetPageRect(i);
+    pp::VarDictionary page_dimensions;
+    page_dimensions.Set(kJSPageX, pp::Var(page_rect.x()));
+    page_dimensions.Set(kJSPageY, pp::Var(page_rect.y()));
+    page_dimensions.Set(kJSPageWidth, pp::Var(page_rect.width()));
+    page_dimensions.Set(kJSPageHeight, pp::Var(page_rect.height()));
+    page_dimensions_array.Set(i, page_dimensions);
+  }
+  dimensions.Set(kJSPageDimensions, page_dimensions_array);
+  PostMessage(dimensions);
+
+  OnGeometryChanged(zoom_, device_scale_);
+}
+
+void OutOfProcessInstance::Invalidate(const pp::Rect& rect) {
+  pp::Rect offset_rect(rect);
+  offset_rect.Offset(available_area_.point());
+  paint_manager_.InvalidateRect(offset_rect);
+}
+
+void OutOfProcessInstance::Scroll(const pp::Point& point) {
+  if (!image_data_.is_null())
+    paint_manager_.ScrollRect(available_area_, point);
+}
+
+void OutOfProcessInstance::ScrollToX(int x) {
+  pp::VarDictionary position;
+  position.Set(kType, kJSSetScrollPositionType);
+  position.Set(kJSPositionX, pp::Var(x / device_scale_));
+  PostMessage(position);
+}
+
+void OutOfProcessInstance::ScrollToY(int y) {
+  pp::VarDictionary position;
+  position.Set(kType, kJSSetScrollPositionType);
+  position.Set(kJSPositionY, pp::Var(y / device_scale_));
+  PostMessage(position);
+}
+
+void OutOfProcessInstance::ScrollToPage(int page) {
+  if (engine_->GetNumberOfPages() == 0)
+    return;
+
+  pp::VarDictionary message;
+  message.Set(kType, kJSGoToPageType);
+  message.Set(kJSPageNumber, pp::Var(page));
+  PostMessage(message);
+}
+
+void OutOfProcessInstance::NavigateTo(const std::string& url,
+                                      bool open_in_new_tab) {
+  std::string url_copy(url);
+
+  // Empty |url_copy| is ok, and will effectively be a reload.
+  // Skip the code below so an empty URL does not turn into "http://", which
+  // will cause GURL to fail a DCHECK.
+  if (!url_copy.empty()) {
+    // If |url_copy| starts with '#', then it's for the same URL with a
+    // different URL fragment.
+    if (url_copy[0] == '#') {
+      url_copy = url_ + url_copy;
+    }
+    // If there's no scheme, add http.
+    if (url_copy.find("://") == std::string::npos &&
+        url_copy.find("mailto:") == std::string::npos) {
+      url_copy = std::string("http://") + url_copy;
+    }
+    // Make sure |url_copy| starts with a valid scheme.
+    if (url_copy.find("http://") != 0 &&
+        url_copy.find("https://") != 0 &&
+        url_copy.find("ftp://") != 0 &&
+        url_copy.find("file://") != 0 &&
+        url_copy.find("mailto:") != 0) {
+      return;
+    }
+    // Make sure |url_copy| is not only a scheme.
+    if (url_copy == "http://" ||
+        url_copy == "https://" ||
+        url_copy == "ftp://" ||
+        url_copy == "file://" ||
+        url_copy == "mailto:") {
+      return;
+    }
+  }
+  pp::VarDictionary message;
+  message.Set(kType, kJSNavigateType);
+  message.Set(kJSNavigateUrl, url_copy);
+  message.Set(kJSNavigateNewTab, open_in_new_tab);
+  PostMessage(message);
+}
+
+void OutOfProcessInstance::UpdateCursor(PP_CursorType_Dev cursor) {
+  if (cursor == cursor_)
+    return;
+  cursor_ = cursor;
+
+  const PPB_CursorControl_Dev* cursor_interface =
+      reinterpret_cast<const PPB_CursorControl_Dev*>(
+      pp::Module::Get()->GetBrowserInterface(PPB_CURSOR_CONTROL_DEV_INTERFACE));
+  if (!cursor_interface) {
+    NOTREACHED();
+    return;
+  }
+
+  cursor_interface->SetCursor(
+      pp_instance(), cursor_, pp::ImageData().pp_resource(), NULL);
+}
+
+void OutOfProcessInstance::UpdateTickMarks(
+    const std::vector<pp::Rect>& tickmarks) {
+  float inverse_scale = 1.0f / device_scale_;
+  std::vector<pp::Rect> scaled_tickmarks = tickmarks;
+  for (size_t i = 0; i < scaled_tickmarks.size(); i++)
+    ScaleRect(inverse_scale, &scaled_tickmarks[i]);
+  tickmarks_ = scaled_tickmarks;
+}
+
+void OutOfProcessInstance::NotifyNumberOfFindResultsChanged(int total,
+                                                            bool final_result) {
+  // We don't want to spam the renderer with too many updates to the number of
+  // find results. Don't send an update if we sent one too recently. If it's the
+  // final update, we always send it though.
+  if (final_result) {
+    NumberOfFindResultsChanged(total, final_result);
+    SetTickmarks(tickmarks_);
+    return;
+  }
+
+  if (recently_sent_find_update_)
+    return;
+
+  NumberOfFindResultsChanged(total, final_result);
+  SetTickmarks(tickmarks_);
+  recently_sent_find_update_ = true;
+  pp::CompletionCallback callback =
+      timer_factory_.NewCallback(
+          &OutOfProcessInstance::ResetRecentlySentFindUpdate);
+  pp::Module::Get()->core()->CallOnMainThread(kFindResultCooldownMs,
+                                              callback, 0);
+}
+
+void OutOfProcessInstance::NotifySelectedFindResultChanged(
+    int current_find_index) {
+  SelectedFindResultChanged(current_find_index);
+}
+
+void OutOfProcessInstance::GetDocumentPassword(
+    pp::CompletionCallbackWithOutput<pp::Var> callback) {
+  if (password_callback_) {
+    NOTREACHED();
+    return;
+  }
+
+  password_callback_.reset(
+      new pp::CompletionCallbackWithOutput<pp::Var>(callback));
+  pp::VarDictionary message;
+  message.Set(pp::Var(kType), pp::Var(kJSGetPasswordType));
+  PostMessage(message);
+}
+
+void OutOfProcessInstance::Alert(const std::string& message) {
+  ModalDialog(this, "alert", message, std::string());
+}
+
+bool OutOfProcessInstance::Confirm(const std::string& message) {
+  pp::Var result = ModalDialog(this, "confirm", message, std::string());
+  return result.is_bool() ? result.AsBool() : false;
+}
+
+std::string OutOfProcessInstance::Prompt(const std::string& question,
+                                         const std::string& default_answer) {
+  pp::Var result = ModalDialog(this, "prompt", question, default_answer);
+  return result.is_string() ? result.AsString() : std::string();
+}
+
+std::string OutOfProcessInstance::GetURL() {
+  return url_;
+}
+
+void OutOfProcessInstance::Email(const std::string& to,
+                                 const std::string& cc,
+                                 const std::string& bcc,
+                                 const std::string& subject,
+                                 const std::string& body) {
+  pp::VarDictionary message;
+  message.Set(pp::Var(kType), pp::Var(kJSEmailType));
+  message.Set(pp::Var(kJSEmailTo),
+              pp::Var(net::EscapeUrlEncodedData(to, false)));
+  message.Set(pp::Var(kJSEmailCc),
+              pp::Var(net::EscapeUrlEncodedData(cc, false)));
+  message.Set(pp::Var(kJSEmailBcc),
+              pp::Var(net::EscapeUrlEncodedData(bcc, false)));
+  message.Set(pp::Var(kJSEmailSubject),
+              pp::Var(net::EscapeUrlEncodedData(subject, false)));
+  message.Set(pp::Var(kJSEmailBody),
+              pp::Var(net::EscapeUrlEncodedData(body, false)));
+  PostMessage(message);
+}
+
+void OutOfProcessInstance::Print() {
+  if (!printing_enabled_ ||
+      (!engine_->HasPermission(PDFEngine::PERMISSION_PRINT_LOW_QUALITY) &&
+       !engine_->HasPermission(PDFEngine::PERMISSION_PRINT_HIGH_QUALITY))) {
+    return;
+  }
+
+  pp::CompletionCallback callback =
+      print_callback_factory_.NewCallback(&OutOfProcessInstance::OnPrint);
+  pp::Module::Get()->core()->CallOnMainThread(0, callback);
+}
+
+void OutOfProcessInstance::OnPrint(int32_t) {
+  pp::PDF::Print(this);
+}
+
+void OutOfProcessInstance::SubmitForm(const std::string& url,
+                                      const void* data,
+                                      int length) {
+  pp::URLRequestInfo request(this);
+  request.SetURL(url);
+  request.SetMethod("POST");
+  request.AppendDataToBody(reinterpret_cast<const char*>(data), length);
+
+  pp::CompletionCallback callback =
+      form_factory_.NewCallback(&OutOfProcessInstance::FormDidOpen);
+  form_loader_ = CreateURLLoaderInternal();
+  int rv = form_loader_.Open(request, callback);
+  if (rv != PP_OK_COMPLETIONPENDING)
+    callback.Run(rv);
+}
+
+void OutOfProcessInstance::FormDidOpen(int32_t result) {
+  // TODO: inform the user of success/failure.
+  if (result != PP_OK) {
+    NOTREACHED();
+  }
+}
+
+std::string OutOfProcessInstance::ShowFileSelectionDialog() {
+  // Seems like very low priority to implement, since the pdf has no way to get
+  // the file data anyways.  Javascript doesn't let you do this synchronously.
+  NOTREACHED();
+  return std::string();
+}
+
+pp::URLLoader OutOfProcessInstance::CreateURLLoader() {
+  if (full_) {
+    if (!did_call_start_loading_) {
+      did_call_start_loading_ = true;
+      pp::PDF::DidStartLoading(this);
+    }
+
+    // Disable save and print until the document is fully loaded, since they
+    // would generate an incomplete document.  Need to do this each time we
+    // call DidStartLoading since that resets the content restrictions.
+    pp::PDF::SetContentRestriction(this, CONTENT_RESTRICTION_SAVE |
+                                   CONTENT_RESTRICTION_PRINT);
+  }
+
+  return CreateURLLoaderInternal();
+}
+
+void OutOfProcessInstance::ScheduleCallback(int id, int delay_in_ms) {
+  pp::CompletionCallback callback =
+      timer_factory_.NewCallback(&OutOfProcessInstance::OnClientTimerFired);
+  pp::Module::Get()->core()->CallOnMainThread(delay_in_ms, callback, id);
+}
+
+void OutOfProcessInstance::SearchString(const base::char16* string,
+                            const base::char16* term,
+                            bool case_sensitive,
+                            std::vector<SearchStringResult>* results) {
+  PP_PrivateFindResult* pp_results;
+  int count = 0;
+  pp::PDF::SearchString(
+      this,
+      reinterpret_cast<const unsigned short*>(string),
+      reinterpret_cast<const unsigned short*>(term),
+      case_sensitive,
+      &pp_results,
+      &count);
+
+  results->resize(count);
+  for (int i = 0; i < count; ++i) {
+    (*results)[i].start_index = pp_results[i].start_index;
+    (*results)[i].length = pp_results[i].length;
+  }
+
+  pp::Memory_Dev memory;
+  memory.MemFree(pp_results);
+}
+
+void OutOfProcessInstance::DocumentPaintOccurred() {
+}
+
+void OutOfProcessInstance::DocumentLoadComplete(int page_count) {
+  // Clear focus state for OSK.
+  FormTextFieldFocusChange(false);
+
+  DCHECK(document_load_state_ == LOAD_STATE_LOADING);
+  document_load_state_ = LOAD_STATE_COMPLETE;
+  UserMetricsRecordAction("PDF.LoadSuccess");
+
+  // Note: If we are in print preview mode the scroll location is retained
+  // across document loads so we don't want to scroll again and override it.
+  if (IsPrintPreview()) {
+    AppendBlankPrintPreviewPages();
+    OnGeometryChanged(0, 0);
+  }
+
+  pp::VarDictionary message;
+  message.Set(pp::Var(kType), pp::Var(kJSLoadProgressType));
+  message.Set(pp::Var(kJSProgressPercentage), pp::Var(100)) ;
+  PostMessage(message);
+
+  if (!full_)
+    return;
+
+  if (did_call_start_loading_) {
+    pp::PDF::DidStopLoading(this);
+    did_call_start_loading_ = false;
+  }
+
+  int content_restrictions =
+      CONTENT_RESTRICTION_CUT | CONTENT_RESTRICTION_PASTE;
+  if (!engine_->HasPermission(PDFEngine::PERMISSION_COPY))
+    content_restrictions |= CONTENT_RESTRICTION_COPY;
+
+  if (!engine_->HasPermission(PDFEngine::PERMISSION_PRINT_LOW_QUALITY) &&
+      !engine_->HasPermission(PDFEngine::PERMISSION_PRINT_HIGH_QUALITY)) {
+    printing_enabled_ = false;
+  }
+
+  pp::PDF::SetContentRestriction(this, content_restrictions);
+
+  uma_.HistogramCustomCounts("PDF.PageCount", page_count,
+                             1, 1000000, 50);
+}
+
+void OutOfProcessInstance::RotateClockwise() {
+  engine_->RotateClockwise();
+}
+
+void OutOfProcessInstance::RotateCounterclockwise() {
+  engine_->RotateCounterclockwise();
+}
+
+void OutOfProcessInstance::PreviewDocumentLoadComplete() {
+  if (preview_document_load_state_ != LOAD_STATE_LOADING ||
+      preview_pages_info_.empty()) {
+    return;
+  }
+
+  preview_document_load_state_ = LOAD_STATE_COMPLETE;
+
+  int dest_page_index = preview_pages_info_.front().second;
+  int src_page_index =
+      ExtractPrintPreviewPageIndex(preview_pages_info_.front().first);
+  if (src_page_index > 0 &&  dest_page_index > -1 && preview_engine_.get())
+    engine_->AppendPage(preview_engine_.get(), dest_page_index);
+
+  preview_pages_info_.pop();
+  // |print_preview_page_count_| is not updated yet. Do not load any
+  // other preview pages till we get this information.
+  if (print_preview_page_count_ == 0)
+    return;
+
+  if (preview_pages_info_.size())
+    LoadAvailablePreviewPage();
+}
+
+void OutOfProcessInstance::DocumentLoadFailed() {
+  DCHECK(document_load_state_ == LOAD_STATE_LOADING);
+  UserMetricsRecordAction("PDF.LoadFailure");
+
+  if (did_call_start_loading_) {
+    pp::PDF::DidStopLoading(this);
+    did_call_start_loading_ = false;
+  }
+
+  document_load_state_ = LOAD_STATE_FAILED;
+  paint_manager_.InvalidateRect(pp::Rect(pp::Point(), plugin_size_));
+
+  // Send a progress value of -1 to indicate a failure.
+  pp::VarDictionary message;
+  message.Set(pp::Var(kType), pp::Var(kJSLoadProgressType));
+  message.Set(pp::Var(kJSProgressPercentage), pp::Var(-1)) ;
+  PostMessage(message);
+}
+
+void OutOfProcessInstance::PreviewDocumentLoadFailed() {
+  UserMetricsRecordAction("PDF.PreviewDocumentLoadFailure");
+  if (preview_document_load_state_ != LOAD_STATE_LOADING ||
+      preview_pages_info_.empty()) {
+    return;
+  }
+
+  preview_document_load_state_ = LOAD_STATE_FAILED;
+  preview_pages_info_.pop();
+
+  if (preview_pages_info_.size())
+    LoadAvailablePreviewPage();
+}
+
+pp::Instance* OutOfProcessInstance::GetPluginInstance() {
+  return this;
+}
+
+void OutOfProcessInstance::DocumentHasUnsupportedFeature(
+    const std::string& feature) {
+  std::string metric("PDF_Unsupported_");
+  metric += feature;
+  if (!unsupported_features_reported_.count(metric)) {
+    unsupported_features_reported_.insert(metric);
+    UserMetricsRecordAction(metric);
+  }
+
+  // Since we use an info bar, only do this for full frame plugins..
+  if (!full_)
+    return;
+
+  if (told_browser_about_unsupported_feature_)
+    return;
+  told_browser_about_unsupported_feature_ = true;
+
+  pp::PDF::HasUnsupportedFeature(this);
+}
+
+void OutOfProcessInstance::DocumentLoadProgress(uint32 available,
+                                                uint32 doc_size) {
+  double progress = 0.0;
+  if (doc_size == 0) {
+    // Document size is unknown. Use heuristics.
+    // We'll make progress logarithmic from 0 to 100M.
+    static const double kFactor = log(100000000.0) / 100.0;
+    if (available > 0) {
+      progress = log(static_cast<double>(available)) / kFactor;
+      if (progress > 100.0)
+        progress = 100.0;
+    }
+  } else {
+    progress = 100.0 * static_cast<double>(available) / doc_size;
+  }
+
+  // We send 100% load progress in DocumentLoadComplete.
+  if (progress >= 100)
+    return;
+
+  // Avoid sending too many progress messages over PostMessage.
+  if (progress > last_progress_sent_ + 1) {
+    last_progress_sent_ = progress;
+    pp::VarDictionary message;
+    message.Set(pp::Var(kType), pp::Var(kJSLoadProgressType));
+    message.Set(pp::Var(kJSProgressPercentage), pp::Var(progress)) ;
+    PostMessage(message);
+  }
+}
+
+void OutOfProcessInstance::FormTextFieldFocusChange(bool in_focus) {
+  if (!text_input_.get())
+    return;
+  if (in_focus)
+    text_input_->SetTextInputType(PP_TEXTINPUT_TYPE_DEV_TEXT);
+  else
+    text_input_->SetTextInputType(PP_TEXTINPUT_TYPE_DEV_NONE);
+}
+
+void OutOfProcessInstance::ResetRecentlySentFindUpdate(int32_t /* unused */) {
+  recently_sent_find_update_ = false;
+}
+
+void OutOfProcessInstance::OnGeometryChanged(double old_zoom,
+                                             float old_device_scale) {
+  if (zoom_ != old_zoom || device_scale_ != old_device_scale)
+    engine_->ZoomUpdated(zoom_ * device_scale_);
+
+  available_area_ = pp::Rect(plugin_size_);
+  int doc_width = GetDocumentPixelWidth();
+  if (doc_width < available_area_.width()) {
+    available_area_.Offset((available_area_.width() - doc_width) / 2, 0);
+    available_area_.set_width(doc_width);
+  }
+  int doc_height = GetDocumentPixelHeight();
+  if (doc_height < available_area_.height()) {
+    available_area_.set_height(doc_height);
+  }
+
+  CalculateBackgroundParts();
+  engine_->PageOffsetUpdated(available_area_.point());
+  engine_->PluginSizeUpdated(available_area_.size());
+
+  if (!document_size_.GetArea())
+    return;
+  paint_manager_.InvalidateRect(pp::Rect(pp::Point(), plugin_size_));
+}
+
+void OutOfProcessInstance::LoadUrl(const std::string& url) {
+  LoadUrlInternal(url, &embed_loader_, &OutOfProcessInstance::DidOpen);
+}
+
+void OutOfProcessInstance::LoadPreviewUrl(const std::string& url) {
+  LoadUrlInternal(url, &embed_preview_loader_,
+                  &OutOfProcessInstance::DidOpenPreview);
+}
+
+void OutOfProcessInstance::LoadUrlInternal(
+    const std::string& url,
+    pp::URLLoader* loader,
+    void (OutOfProcessInstance::* method)(int32_t)) {
+  pp::URLRequestInfo request(this);
+  request.SetURL(url);
+  request.SetMethod("GET");
+
+  *loader = CreateURLLoaderInternal();
+  pp::CompletionCallback callback = loader_factory_.NewCallback(method);
+  int rv = loader->Open(request, callback);
+  if (rv != PP_OK_COMPLETIONPENDING)
+    callback.Run(rv);
+}
+
+pp::URLLoader OutOfProcessInstance::CreateURLLoaderInternal() {
+  pp::URLLoader loader(this);
+
+  const PPB_URLLoaderTrusted* trusted_interface =
+      reinterpret_cast<const PPB_URLLoaderTrusted*>(
+          pp::Module::Get()->GetBrowserInterface(
+              PPB_URLLOADERTRUSTED_INTERFACE));
+  if (trusted_interface)
+    trusted_interface->GrantUniversalAccess(loader.pp_resource());
+  return loader;
+}
+
+void OutOfProcessInstance::SetZoom(double scale) {
+  double old_zoom = zoom_;
+  zoom_ = scale;
+  OnGeometryChanged(old_zoom, device_scale_);
+}
+
+std::string OutOfProcessInstance::GetLocalizedString(PP_ResourceString id) {
+  pp::Var rv(pp::PDF::GetLocalizedString(this, id));
+  if (!rv.is_string())
+    return std::string();
+
+  return rv.AsString();
+}
+
+void OutOfProcessInstance::AppendBlankPrintPreviewPages() {
+  if (print_preview_page_count_ == 0)
+    return;
+  engine_->AppendBlankPages(print_preview_page_count_);
+  if (preview_pages_info_.size() > 0)
+    LoadAvailablePreviewPage();
+}
+
+bool OutOfProcessInstance::IsPrintPreview() {
+  return IsPrintPreviewUrl(url_);
+}
+
+void OutOfProcessInstance::ProcessPreviewPageInfo(const std::string& url,
+                                                  int dst_page_index) {
+  if (!IsPrintPreview())
+    return;
+
+  int src_page_index = ExtractPrintPreviewPageIndex(url);
+  if (src_page_index < 1)
+    return;
+
+  preview_pages_info_.push(std::make_pair(url, dst_page_index));
+  LoadAvailablePreviewPage();
+}
+
+void OutOfProcessInstance::LoadAvailablePreviewPage() {
+  if (preview_pages_info_.size() <= 0 ||
+      document_load_state_ != LOAD_STATE_COMPLETE) {
+    return;
+  }
+
+  std::string url = preview_pages_info_.front().first;
+  int dst_page_index = preview_pages_info_.front().second;
+  int src_page_index = ExtractPrintPreviewPageIndex(url);
+  if (src_page_index < 1 ||
+      dst_page_index >= print_preview_page_count_ ||
+      preview_document_load_state_ == LOAD_STATE_LOADING) {
+    return;
+  }
+
+  preview_document_load_state_ = LOAD_STATE_LOADING;
+  LoadPreviewUrl(url);
+}
+
+void OutOfProcessInstance::UserMetricsRecordAction(
+    const std::string& action) {
+  // TODO(raymes): Move this function to PPB_UMA_Private.
+  pp::PDF::UserMetricsRecordAction(this, pp::Var(action));
+}
+
+pp::Point OutOfProcessInstance::BoundScrollOffsetToDocument(
+    const pp::Point& scroll_offset) {
+  int max_x = document_size_.width() * zoom_ - plugin_dip_size_.width();
+  int x = std::max(std::min(scroll_offset.x(), max_x), 0);
+  int max_y = document_size_.height() * zoom_ - plugin_dip_size_.height();
+  int y = std::max(std::min(scroll_offset.y(), max_y), 0);
+  return pp::Point(x, y);
+}
+
+}  // namespace chrome_pdf
diff --git a/xfa_test/pdf/out_of_process_instance.h b/xfa_test/pdf/out_of_process_instance.h
new file mode 100644
index 0000000000..355f050dc3
--- /dev/null
+++ b/xfa_test/pdf/out_of_process_instance.h
@@ -0,0 +1,345 @@
+// Copyright (c) 2012 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef PDF_OUT_OF_PROCESS_INSTANCE_H_
+#define PDF_OUT_OF_PROCESS_INSTANCE_H_
+
+#include <queue>
+#include <set>
+#include <string>
+#include <utility>
+#include <vector>
+
+#include "base/memory/scoped_ptr.h"
+#include "pdf/paint_manager.h"
+#include "pdf/pdf_engine.h"
+#include "pdf/preview_mode_client.h"
+
+#include "ppapi/c/private/ppb_pdf.h"
+#include "ppapi/cpp/dev/printing_dev.h"
+#include "ppapi/cpp/dev/scriptable_object_deprecated.h"
+#include "ppapi/cpp/dev/selection_dev.h"
+#include "ppapi/cpp/graphics_2d.h"
+#include "ppapi/cpp/image_data.h"
+#include "ppapi/cpp/input_event.h"
+#include "ppapi/cpp/instance.h"
+#include "ppapi/cpp/private/find_private.h"
+#include "ppapi/cpp/private/uma_private.h"
+#include "ppapi/cpp/url_loader.h"
+#include "ppapi/utility/completion_callback_factory.h"
+
+namespace pp {
+class TextInput_Dev;
+}
+
+namespace chrome_pdf {
+
+class OutOfProcessInstance : public pp::Instance,
+                             public pp::Find_Private,
+                             public pp::Printing_Dev,
+                             public pp::Selection_Dev,
+                             public PaintManager::Client,
+                             public PDFEngine::Client,
+                             public PreviewModeClient::Client {
+ public:
+  explicit OutOfProcessInstance(PP_Instance instance);
+  virtual ~OutOfProcessInstance();
+
+  // pp::Instance implementation.
+  virtual bool Init(uint32_t argc,
+                    const char* argn[],
+                    const char* argv[]) override;
+  virtual void HandleMessage(const pp::Var& message) override;
+  virtual bool HandleInputEvent(const pp::InputEvent& event) override;
+  virtual void DidChangeView(const pp::View& view) override;
+
+  // pp::Find_Private implementation.
+  virtual bool StartFind(const std::string& text, bool case_sensitive) override;
+  virtual void SelectFindResult(bool forward) override;
+  virtual void StopFind() override;
+
+  // pp::PaintManager::Client implementation.
+  virtual void OnPaint(const std::vector<pp::Rect>& paint_rects,
+                       std::vector<PaintManager::ReadyRect>* ready,
+                       std::vector<pp::Rect>* pending) override;
+
+  // pp::Printing_Dev implementation.
+  virtual uint32_t QuerySupportedPrintOutputFormats() override;
+  virtual int32_t PrintBegin(
+      const PP_PrintSettings_Dev& print_settings) override;
+  virtual pp::Resource PrintPages(
+      const PP_PrintPageNumberRange_Dev* page_ranges,
+      uint32_t page_range_count) override;
+  virtual void PrintEnd() override;
+  virtual bool IsPrintScalingDisabled() override;
+
+  // pp::Private implementation.
+  virtual pp::Var GetLinkAtPosition(const pp::Point& point);
+
+  // PPP_Selection_Dev implementation.
+  virtual pp::Var GetSelectedText(bool html) override;
+
+  void FlushCallback(int32_t result);
+  void DidOpen(int32_t result);
+  void DidOpenPreview(int32_t result);
+
+  // Called when the timer is fired.
+  void OnClientTimerFired(int32_t id);
+
+  // Called to print without re-entrancy issues.
+  void OnPrint(int32_t);
+
+  // PDFEngine::Client implementation.
+  virtual void DocumentSizeUpdated(const pp::Size& size);
+  virtual void Invalidate(const pp::Rect& rect);
+  virtual void Scroll(const pp::Point& point);
+  virtual void ScrollToX(int position);
+  virtual void ScrollToY(int position);
+  virtual void ScrollToPage(int page);
+  virtual void NavigateTo(const std::string& url, bool open_in_new_tab);
+  virtual void UpdateCursor(PP_CursorType_Dev cursor);
+  virtual void UpdateTickMarks(const std::vector<pp::Rect>& tickmarks);
+  virtual void NotifyNumberOfFindResultsChanged(int total, bool final_result);
+  virtual void NotifySelectedFindResultChanged(int current_find_index);
+  virtual void GetDocumentPassword(
+      pp::CompletionCallbackWithOutput<pp::Var> callback);
+  virtual void Alert(const std::string& message);
+  virtual bool Confirm(const std::string& message);
+  virtual std::string Prompt(const std::string& question,
+                             const std::string& default_answer);
+  virtual std::string GetURL();
+  virtual void Email(const std::string& to,
+                     const std::string& cc,
+                     const std::string& bcc,
+                     const std::string& subject,
+                     const std::string& body);
+  virtual void Print();
+  virtual void SubmitForm(const std::string& url,
+                          const void* data,
+                          int length);
+  virtual std::string ShowFileSelectionDialog();
+  virtual pp::URLLoader CreateURLLoader();
+  virtual void ScheduleCallback(int id, int delay_in_ms);
+  virtual void SearchString(const base::char16* string,
+                            const base::char16* term,
+                            bool case_sensitive,
+                            std::vector<SearchStringResult>* results);
+  virtual void DocumentPaintOccurred();
+  virtual void DocumentLoadComplete(int page_count);
+  virtual void DocumentLoadFailed();
+  virtual pp::Instance* GetPluginInstance();
+  virtual void DocumentHasUnsupportedFeature(const std::string& feature);
+  virtual void DocumentLoadProgress(uint32 available, uint32 doc_size);
+  virtual void FormTextFieldFocusChange(bool in_focus);
+  virtual bool IsPrintPreview();
+
+  // PreviewModeClient::Client implementation.
+  virtual void PreviewDocumentLoadComplete() override;
+  virtual void PreviewDocumentLoadFailed() override;
+
+  // Helper functions for implementing PPP_PDF.
+  void RotateClockwise();
+  void RotateCounterclockwise();
+
+ private:
+  void ResetRecentlySentFindUpdate(int32_t);
+
+  // Called whenever the plugin geometry changes to update the location of the
+  // background parts, and notifies the pdf engine.
+  void OnGeometryChanged(double old_zoom, float old_device_scale);
+
+  // Figures out the location of any background rectangles (i.e. those that
+  // aren't painted by the PDF engine).
+  void CalculateBackgroundParts();
+
+  // Computes document width/height in device pixels, based on current zoom and
+  // device scale
+  int GetDocumentPixelWidth() const;
+  int GetDocumentPixelHeight() const;
+
+  // Draws a rectangle with the specified dimensions and color in our buffer.
+  void FillRect(const pp::Rect& rect, uint32 color);
+
+  void LoadUrl(const std::string& url);
+  void LoadPreviewUrl(const std::string& url);
+  void LoadUrlInternal(const std::string& url, pp::URLLoader* loader,
+                       void (OutOfProcessInstance::* method)(int32_t));
+
+  // Creates a URL loader and allows it to access all urls, i.e. not just the
+  // frame's origin.
+  pp::URLLoader CreateURLLoaderInternal();
+
+  // Figure out the initial page to display based on #page=N and #nameddest=foo
+  // in the |url_|.
+  // Returns -1 if there is no valid fragment. The returned value is 0-based,
+  // whereas page=N is 1-based.
+  int GetInitialPage(const std::string& url);
+
+  void FormDidOpen(int32_t result);
+
+  std::string GetLocalizedString(PP_ResourceString id);
+
+  void UserMetricsRecordAction(const std::string& action);
+
+  enum DocumentLoadState {
+    LOAD_STATE_LOADING,
+    LOAD_STATE_COMPLETE,
+    LOAD_STATE_FAILED,
+  };
+
+  // Set new zoom scale.
+  void SetZoom(double scale);
+
+  // Reduces the document to 1 page and appends |print_preview_page_count_|
+  // blank pages to the document for print preview.
+  void AppendBlankPrintPreviewPages();
+
+  // Process the preview page data information. |src_url| specifies the preview
+  // page data location. The |src_url| is in the format:
+  // chrome://print/id/page_number/print.pdf
+  // |dst_page_index| specifies the blank page index that needs to be replaced
+  // with the new page data.
+  void ProcessPreviewPageInfo(const std::string& src_url, int dst_page_index);
+  // Load the next available preview page into the blank page.
+  void LoadAvailablePreviewPage();
+
+  // Bound the given scroll offset to the document.
+  pp::Point BoundScrollOffsetToDocument(const pp::Point& scroll_offset);
+
+  pp::ImageData image_data_;
+  // Used when the plugin is embedded in a page and we have to create the loader
+  // ourself.
+  pp::CompletionCallbackFactory<OutOfProcessInstance> loader_factory_;
+  pp::URLLoader embed_loader_;
+  pp::URLLoader embed_preview_loader_;
+
+  PP_CursorType_Dev cursor_;  // The current cursor.
+
+  pp::CompletionCallbackFactory<OutOfProcessInstance> timer_factory_;
+
+  // Size, in pixels, of plugin rectangle.
+  pp::Size plugin_size_;
+  // Size, in DIPs, of plugin rectangle.
+  pp::Size plugin_dip_size_;
+  // Remaining area, in pixels, to render the pdf in after accounting for
+  // horizontal centering.
+  pp::Rect available_area_;
+  // Size of entire document in pixels (i.e. if each page is 800 pixels high and
+  // there are 10 pages, the height will be 8000).
+  pp::Size document_size_;
+
+  double zoom_;  // Current zoom factor.
+
+  float device_scale_;  // Current device scale factor.
+  bool printing_enabled_;
+  // True if the plugin is full-page.
+  bool full_;
+
+  PaintManager paint_manager_;
+
+  struct BackgroundPart {
+    pp::Rect location;
+    uint32 color;
+  };
+  std::vector<BackgroundPart> background_parts_;
+
+  struct PrintSettings {
+    PrintSettings() {
+      Clear();
+    }
+    void Clear() {
+      is_printing = false;
+      print_pages_called_ = false;
+      memset(&pepper_print_settings, 0, sizeof(pepper_print_settings));
+    }
+    // This is set to true when PrintBegin is called and false when PrintEnd is
+    // called.
+    bool is_printing;
+    // To know whether this was an actual print operation, so we don't double
+    // count UMA logging.
+    bool print_pages_called_;
+    PP_PrintSettings_Dev pepper_print_settings;
+  };
+
+  PrintSettings print_settings_;
+
+  scoped_ptr<PDFEngine> engine_;
+
+  // This engine is used to render the individual preview page data. This is
+  // used only in print preview mode. This will use |PreviewModeClient|
+  // interface which has very limited access to the pp::Instance.
+  scoped_ptr<PDFEngine> preview_engine_;
+
+  std::string url_;
+
+  // Used for submitting forms.
+  pp::CompletionCallbackFactory<OutOfProcessInstance> form_factory_;
+  pp::URLLoader form_loader_;
+
+  // Used for printing without re-entrancy issues.
+  pp::CompletionCallbackFactory<OutOfProcessInstance> print_callback_factory_;
+
+  // True if we haven't painted the plugin viewport yet.
+  bool first_paint_;
+
+  DocumentLoadState document_load_state_;
+  DocumentLoadState preview_document_load_state_;
+
+  // A UMA resource for histogram reporting.
+  pp::UMAPrivate uma_;
+
+  // Used so that we only tell the browser once about an unsupported feature, to
+  // avoid the infobar going up more than once.
+  bool told_browser_about_unsupported_feature_;
+
+  // Keeps track of which unsupported features we reported, so we avoid spamming
+  // the stats if a feature shows up many times per document.
+  std::set<std::string> unsupported_features_reported_;
+
+  // Number of pages in print preview mode, 0 if not in print preview mode.
+  int print_preview_page_count_;
+  std::vector<int> print_preview_page_numbers_;
+
+  // Used to manage loaded print preview page information. A |PreviewPageInfo|
+  // consists of data source url string and the page index in the destination
+  // document.
+  typedef std::pair<std::string, int> PreviewPageInfo;
+  std::queue<PreviewPageInfo> preview_pages_info_;
+
+  // Used to signal the browser about focus changes to trigger the OSK.
+  // TODO(abodenha@chromium.org) Implement full IME support in the plugin.
+  // http://crbug.com/132565
+  scoped_ptr<pp::TextInput_Dev> text_input_;
+
+  // The last document load progress value sent to the web page.
+  double last_progress_sent_;
+
+  // Whether an update to the number of find results found was sent less than
+  // |kFindResultCooldownMs| milliseconds ago.
+  bool recently_sent_find_update_;
+
+  // The tickmarks.
+  std::vector<pp::Rect> tickmarks_;
+
+  // Whether the plugin has received a viewport changed message. Nothing should
+  // be painted until this is received.
+  bool received_viewport_message_;
+
+  // If true, this means we told the RenderView that we're starting a network
+  // request so that it can start the throbber. We will tell it again once the
+  // document finishes loading.
+  bool did_call_start_loading_;
+
+  // If this is true, then don't scroll the plugin in response to DidChangeView
+  // messages. This will be true when the extension page is in the process of
+  // zooming the plugin so that flickering doesn't occur while zooming.
+  bool stop_scrolling_;
+
+  // The callback for receiving the password from the page.
+  scoped_ptr<pp::CompletionCallbackWithOutput<pp::Var> > password_callback_;
+};
+
+}  // namespace chrome_pdf
+
+#endif  // PDF_OUT_OF_PROCESS_INSTANCE_H_
diff --git a/xfa_test/pdf/page_indicator.cc b/xfa_test/pdf/page_indicator.cc
new file mode 100644
index 0000000000..c4af1e07b7
--- /dev/null
+++ b/xfa_test/pdf/page_indicator.cc
@@ -0,0 +1,127 @@
+// Copyright (c) 2012 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "pdf/page_indicator.h"
+
+#include "base/logging.h"
+#include "base/strings/string_util.h"
+#include "pdf/draw_utils.h"
+#include "pdf/number_image_generator.h"
+#include "pdf/resource_consts.h"
+
+namespace chrome_pdf {
+
+
+PageIndicator::PageIndicator()
+    : current_page_(0),
+      fade_out_timer_id_(0),
+      splash_timeout_(kPageIndicatorSplashTimeoutMs),
+      fade_timeout_(kPageIndicatorScrollFadeTimeoutMs),
+      always_visible_(false) {
+}
+
+PageIndicator::~PageIndicator() {
+}
+
+bool PageIndicator::CreatePageIndicator(
+    uint32 id,
+    bool visible,
+    Control::Owner* delegate,
+    NumberImageGenerator* number_image_generator,
+    bool always_visible) {
+  number_image_generator_ = number_image_generator;
+  always_visible_ = always_visible;
+
+  pp::Rect rc;
+  bool res = Control::Create(id, rc, visible, delegate);
+  return res;
+}
+
+void PageIndicator::Configure(const pp::Point& origin,
+                              const pp::ImageData& background) {
+  background_ = background;
+  pp::Rect rc(origin, background_.size());
+  Control::SetRect(rc, false);
+}
+
+void PageIndicator::set_current_page(int current_page) {
+  if (current_page_ < 0)
+    return;
+
+  current_page_ = current_page;
+}
+
+void PageIndicator::Paint(pp::ImageData* image_data, const pp::Rect& rc) {
+  if (!visible())
+    return;
+
+  pp::Rect draw_rc = rc.Intersect(rect());
+  if (draw_rc.IsEmpty())
+    return;
+
+  // Copying the background image to a temporary buffer.
+  pp::ImageData buffer(owner()->GetInstance(), background_.format(),
+                       background_.size(), false);
+  CopyImage(background_, pp::Rect(background_.size()),
+            &buffer, pp::Rect(background_.size()), false);
+
+  // Creating the page number image.
+  pp::ImageData page_number_image;
+  number_image_generator_->GenerateImage(current_page_, &page_number_image);
+
+  pp::Point origin2(
+      (buffer.size().width() - page_number_image.size().width()) / 2.5,
+      (buffer.size().height() - page_number_image.size().height()) / 2);
+
+  // Drawing page number image on the buffer.
+  if (origin2.x() > 0 && origin2.y() > 0) {
+    CopyImage(page_number_image,
+              pp::Rect(pp::Point(), page_number_image.size()),
+              &buffer,
+              pp::Rect(origin2, page_number_image.size()),
+              false);
+  }
+
+  // Drawing the buffer.
+  pp::Point origin = draw_rc.point();
+  draw_rc.Offset(-rect().x(), -rect().y());
+  AlphaBlend(buffer, draw_rc, image_data, origin, transparency());
+}
+
+void PageIndicator::OnTimerFired(uint32 timer_id) {
+  FadingControl::OnTimerFired(timer_id);
+  if (timer_id == fade_out_timer_id_) {
+    Fade(false, fade_timeout_);
+  }
+}
+
+void PageIndicator::ResetFadeOutTimer() {
+  fade_out_timer_id_ =
+      owner()->ScheduleTimer(id(), splash_timeout_);
+}
+
+void PageIndicator::OnFadeInComplete() {
+  if (!always_visible_)
+    ResetFadeOutTimer();
+}
+
+void PageIndicator::Splash() {
+  Splash(kPageIndicatorSplashTimeoutMs, kPageIndicatorScrollFadeTimeoutMs);
+}
+
+void PageIndicator::Splash(uint32 splash_timeout, uint32 fade_timeout) {
+  splash_timeout_ = splash_timeout;
+  fade_timeout_ = fade_timeout;
+  if (!always_visible_)
+    fade_out_timer_id_ = 0;
+  Fade(true, fade_timeout_);
+}
+
+int PageIndicator::GetYPosition(
+    int vertical_scrollbar_y, int document_height, int plugin_height) {
+  double percent = static_cast<double>(vertical_scrollbar_y) / document_height;
+  return (plugin_height - rect().height()) * percent;
+}
+
+}  // namespace chrome_pdf
diff --git a/xfa_test/pdf/page_indicator.h b/xfa_test/pdf/page_indicator.h
new file mode 100644
index 0000000000..0d06ee1a0b
--- /dev/null
+++ b/xfa_test/pdf/page_indicator.h
@@ -0,0 +1,72 @@
+// Copyright (c) 2012 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef PDF_PAGE_INDICATOR_H_
+#define PDF_PAGE_INDICATOR_H_
+
+#include <string>
+#include <vector>
+
+#include "pdf/control.h"
+#include "pdf/fading_control.h"
+#include "ppapi/cpp/image_data.h"
+#include "ppapi/cpp/point.h"
+#include "ppapi/cpp/rect.h"
+
+namespace chrome_pdf {
+
+class NumberImageGenerator;
+
+const uint32 kPageIndicatorScrollFadeTimeoutMs = 240;
+const uint32 kPageIndicatorInitialFadeTimeoutMs = 960;
+const uint32 kPageIndicatorSplashTimeoutMs = 2000;
+
+class PageIndicator : public FadingControl {
+ public:
+  PageIndicator();
+  virtual ~PageIndicator();
+  virtual bool CreatePageIndicator(
+      uint32 id,
+      bool visible,
+      Control::Owner* delegate,
+      NumberImageGenerator* number_image_generator,
+      bool always_visible);
+
+  void Configure(const pp::Point& origin, const pp::ImageData& background);
+
+  int current_page() const { return current_page_; }
+  void set_current_page(int current_page);
+
+  virtual void Splash();
+  void Splash(uint32 splash_timeout, uint32 page_timeout);
+
+  // Returns the y position where the page indicator should be drawn given the
+  // position of the scrollbar and the total document height and the plugin
+  // height.
+  int GetYPosition(
+      int vertical_scrollbar_y, int document_height, int plugin_height);
+
+  // Control interface.
+  virtual void Paint(pp::ImageData* image_data, const pp::Rect& rc);
+  virtual void OnTimerFired(uint32 timer_id);
+
+  // FadingControl interface.
+  virtual void OnFadeInComplete();
+
+ private:
+  void ResetFadeOutTimer();
+
+  int current_page_;
+  pp::ImageData background_;
+  NumberImageGenerator* number_image_generator_;
+  uint32 fade_out_timer_id_;
+  uint32 splash_timeout_;
+  uint32 fade_timeout_;
+
+  bool always_visible_;
+};
+
+}  // namespace chrome_pdf
+
+#endif  // PDF_PAGE_INDICATOR_H_
diff --git a/xfa_test/pdf/paint_aggregator.cc b/xfa_test/pdf/paint_aggregator.cc
new file mode 100644
index 0000000000..549cab6d09
--- /dev/null
+++ b/xfa_test/pdf/paint_aggregator.cc
@@ -0,0 +1,263 @@
+// Copyright (c) 2010 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "pdf/paint_aggregator.h"
+
+#include <algorithm>
+
+#include "base/logging.h"
+
+// ----------------------------------------------------------------------------
+// ALGORITHM NOTES
+//
+// We attempt to maintain a scroll rect in the presence of invalidations that
+// are contained within the scroll rect.  If an invalidation crosses a scroll
+// rect, then we just treat the scroll rect as an invalidation rect.
+//
+// For invalidations performed prior to scrolling and contained within the
+// scroll rect, we offset the invalidation rects to account for the fact that
+// the consumer will perform scrolling before painting.
+//
+// We only support scrolling along one axis at a time.  A diagonal scroll will
+// therefore be treated as an invalidation.
+// ----------------------------------------------------------------------------
+
+PaintAggregator::PaintUpdate::PaintUpdate() {
+}
+
+PaintAggregator::PaintUpdate::~PaintUpdate() {
+}
+
+PaintAggregator::InternalPaintUpdate::InternalPaintUpdate() :
+    synthesized_scroll_damage_rect_(false) {
+}
+
+PaintAggregator::InternalPaintUpdate::~InternalPaintUpdate() {
+}
+
+pp::Rect PaintAggregator::InternalPaintUpdate::GetScrollDamage() const {
+  // Should only be scrolling in one direction at a time.
+  DCHECK(!(scroll_delta.x() && scroll_delta.y()));
+
+  pp::Rect damaged_rect;
+
+  // Compute the region we will expose by scrolling, and paint that into a
+  // shared memory section.
+  if (scroll_delta.x()) {
+    int32_t dx = scroll_delta.x();
+    damaged_rect.set_y(scroll_rect.y());
+    damaged_rect.set_height(scroll_rect.height());
+    if (dx > 0) {
+      damaged_rect.set_x(scroll_rect.x());
+      damaged_rect.set_width(dx);
+    } else {
+      damaged_rect.set_x(scroll_rect.right() + dx);
+      damaged_rect.set_width(-dx);
+    }
+  } else {
+    int32_t dy = scroll_delta.y();
+    damaged_rect.set_x(scroll_rect.x());
+    damaged_rect.set_width(scroll_rect.width());
+    if (dy > 0) {
+      damaged_rect.set_y(scroll_rect.y());
+      damaged_rect.set_height(dy);
+    } else {
+      damaged_rect.set_y(scroll_rect.bottom() + dy);
+      damaged_rect.set_height(-dy);
+    }
+  }
+
+  // In case the scroll offset exceeds the width/height of the scroll rect
+  return scroll_rect.Intersect(damaged_rect);
+}
+
+PaintAggregator::PaintAggregator() {
+}
+
+bool PaintAggregator::HasPendingUpdate() const {
+  return !update_.scroll_rect.IsEmpty() || !update_.paint_rects.empty();
+}
+
+void PaintAggregator::ClearPendingUpdate() {
+  update_ = InternalPaintUpdate();
+}
+
+PaintAggregator::PaintUpdate PaintAggregator::GetPendingUpdate() {
+  // Convert the internal paint update to the external one, which includes a
+  // bit more precomputed info for the caller.
+  PaintUpdate ret;
+  ret.scroll_delta = update_.scroll_delta;
+  ret.scroll_rect = update_.scroll_rect;
+  ret.has_scroll = ret.scroll_delta.x() != 0 || ret.scroll_delta.y() != 0;
+
+  // Include the scroll damage (if any) in the paint rects.
+  // Code invalidates damaged rect here, it pick it up from the list of paint
+  // rects in the next block.
+  if (ret.has_scroll  && !update_.synthesized_scroll_damage_rect_) {
+    update_.synthesized_scroll_damage_rect_ = true;
+    pp::Rect scroll_damage = update_.GetScrollDamage();
+    InvalidateRectInternal(scroll_damage, false);
+  }
+
+  ret.paint_rects.reserve(update_.paint_rects.size() + 1);
+  for (size_t i = 0; i < update_.paint_rects.size(); i++)
+    ret.paint_rects.push_back(update_.paint_rects[i]);
+
+  return ret;
+}
+
+void PaintAggregator::SetIntermediateResults(
+    const std::vector<ReadyRect>& ready,
+    const std::vector<pp::Rect>& pending) {
+  update_.ready_rects.insert(
+      update_.ready_rects.end(), ready.begin(), ready.end());
+  update_.paint_rects = pending;
+}
+
+std::vector<PaintAggregator::ReadyRect> PaintAggregator::GetReadyRects() const {
+  return update_.ready_rects;
+}
+
+void PaintAggregator::InvalidateRect(const pp::Rect& rect) {
+  InvalidateRectInternal(rect, true);
+}
+
+void PaintAggregator::ScrollRect(const pp::Rect& clip_rect,
+                                 const pp::Point& amount) {
+  // We only support scrolling along one axis at a time.
+  if (amount.x() != 0 && amount.y() != 0) {
+    InvalidateRect(clip_rect);
+    return;
+  }
+
+  // We can only scroll one rect at a time.
+  if (!update_.scroll_rect.IsEmpty() && update_.scroll_rect != clip_rect) {
+    InvalidateRect(clip_rect);
+    return;
+  }
+
+  // Again, we only support scrolling along one axis at a time.  Make sure this
+  // update doesn't scroll on a different axis than any existing one.
+  if ((amount.x() && update_.scroll_delta.y()) ||
+      (amount.y() && update_.scroll_delta.x())) {
+    InvalidateRect(clip_rect);
+    return;
+  }
+
+  // The scroll rect is new or isn't changing (though the scroll amount may
+  // be changing).
+  update_.scroll_rect = clip_rect;
+  update_.scroll_delta += amount;
+
+  // We might have just wiped out a pre-existing scroll.
+  if (update_.scroll_delta == pp::Point()) {
+    update_.scroll_rect = pp::Rect();
+    return;
+  }
+
+  // Adjust any paint rects that intersect the scroll. For the portion of the
+  // paint that is inside the scroll area, move it by the scroll amount and
+  // replace the existing paint with it. For the portion (if any) that is
+  // outside the scroll, just invalidate it.
+  std::vector<pp::Rect> leftover_rects;
+  for (size_t i = 0; i < update_.paint_rects.size(); ++i) {
+    if (!update_.scroll_rect.Intersects(update_.paint_rects[i]))
+      continue;
+
+    pp::Rect intersection =
+        update_.paint_rects[i].Intersect(update_.scroll_rect);
+    pp::Rect rect = update_.paint_rects[i];
+    while (!rect.IsEmpty()) {
+      pp::Rect leftover = rect.Subtract(intersection);
+      if (leftover.IsEmpty())
+        break;
+      // Don't want to call InvalidateRectInternal now since it'll modify
+      // update_.paint_rects, so keep track of this and do it below.
+      leftover_rects.push_back(leftover);
+      rect = rect.Subtract(leftover);
+    }
+
+    update_.paint_rects[i] = ScrollPaintRect(intersection, amount);
+
+    // The rect may have been scrolled out of view.
+    if (update_.paint_rects[i].IsEmpty()) {
+      update_.paint_rects.erase(update_.paint_rects.begin() + i);
+      i--;
+    }
+  }
+
+  for (size_t i = 0; i < leftover_rects.size(); ++i)
+    InvalidateRectInternal(leftover_rects[i], false);
+
+  for (size_t i = 0; i < update_.ready_rects.size(); ++i) {
+    if (update_.scroll_rect.Contains(update_.ready_rects[i].rect)) {
+      update_.ready_rects[i].rect =
+          ScrollPaintRect(update_.ready_rects[i].rect, amount);
+    }
+  }
+
+  if (update_.synthesized_scroll_damage_rect_) {
+    pp::Rect damage = update_.GetScrollDamage();
+    InvalidateRect(damage);
+  }
+}
+
+pp::Rect PaintAggregator::ScrollPaintRect(const pp::Rect& paint_rect,
+                                          const pp::Point& amount) const {
+  pp::Rect result = paint_rect;
+  result.Offset(amount);
+  result = update_.scroll_rect.Intersect(result);
+  return result;
+}
+
+void PaintAggregator::InvalidateScrollRect() {
+  pp::Rect scroll_rect = update_.scroll_rect;
+  update_.scroll_rect = pp::Rect();
+  update_.scroll_delta = pp::Point();
+  InvalidateRect(scroll_rect);
+}
+
+void PaintAggregator::InvalidateRectInternal(const pp::Rect& rect_old,
+                                             bool check_scroll) {
+  pp::Rect rect = rect_old;
+  // Check if any rects that are ready to be painted overlap.
+  for (size_t i = 0; i < update_.ready_rects.size(); ++i) {
+    const pp::Rect& existing_rect = update_.ready_rects[i].rect;
+    if (rect.Intersects(existing_rect)) {
+      // Re-invalidate in case the union intersects other paint rects.
+      rect = existing_rect.Union(rect);
+      update_.ready_rects.erase(update_.ready_rects.begin() + i);
+      break;
+    }
+  }
+
+  bool add_paint = true;
+
+  // Combine overlapping paints using smallest bounding box.
+  for (size_t i = 0; i < update_.paint_rects.size(); ++i) {
+    const pp::Rect& existing_rect = update_.paint_rects[i];
+    if (existing_rect.Contains(rect))  // Optimize out redundancy.
+      add_paint = false;
+    if (rect.Intersects(existing_rect) || rect.SharesEdgeWith(existing_rect)) {
+      // Re-invalidate in case the union intersects other paint rects.
+      pp::Rect combined_rect = existing_rect.Union(rect);
+      update_.paint_rects.erase(update_.paint_rects.begin() + i);
+      InvalidateRectInternal(combined_rect, check_scroll);
+      add_paint = false;
+    }
+  }
+
+  if (add_paint) {
+    // Add a non-overlapping paint.
+    update_.paint_rects.push_back(rect);
+  }
+
+  // If the new paint overlaps with a scroll, then also invalidate the rect in
+  // its new position.
+  if (check_scroll &&
+      !update_.scroll_rect.IsEmpty() &&
+      update_.scroll_rect.Intersects(rect)) {
+    InvalidateRectInternal(ScrollPaintRect(rect, update_.scroll_delta), false);
+  }
+}
diff --git a/xfa_test/pdf/paint_aggregator.h b/xfa_test/pdf/paint_aggregator.h
new file mode 100644
index 0000000000..96f61e0878
--- /dev/null
+++ b/xfa_test/pdf/paint_aggregator.h
@@ -0,0 +1,130 @@
+// Copyright (c) 2010 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef PDF_PAINT_AGGREGATOR_H_
+#define PDF_PAINT_AGGREGATOR_H_
+
+#include <vector>
+
+#include "ppapi/cpp/image_data.h"
+#include "ppapi/cpp/rect.h"
+#include "ppapi/cpp/rect.h"
+
+// This class is responsible for aggregating multiple invalidation and scroll
+// commands to produce a scroll and repaint sequence. You can use this manually
+// to track your updates, but most applications will use the PaintManager to
+// additionally handle the necessary callbacks on top of the PaintAggregator
+// functionality.
+//
+// See http://code.google.com/p/ppapi/wiki/2DPaintingModel
+class PaintAggregator {
+ public:
+  // Stores information about a rectangle that has finished painting.  The
+  // PaintManager will paint it only when everything else on the screen is also
+  // ready.
+  struct ReadyRect {
+    pp::Point offset;
+    pp::Rect rect;
+    pp::ImageData image_data;
+  };
+
+  struct PaintUpdate {
+    PaintUpdate();
+    ~PaintUpdate();
+
+    // True if there is a scroll applied. This indicates that the scroll delta
+    // and scroll_rect are nonzero (just as a convenience).
+    bool has_scroll;
+
+    // The amount to scroll by. Either the X or Y may be nonzero to indicate a
+    // scroll in that direction, but there will never be a scroll in both
+    // directions at the same time (this will be converted to a paint of the
+    // region instead).
+    //
+    // If there is no scroll, this will be (0, 0).
+    pp::Point scroll_delta;
+
+    // The rectangle that should be scrolled by the scroll_delta. If there is no
+    // scroll, this will be (0, 0, 0, 0). We only track one scroll command at
+    // once. If there are multiple ones, they will be converted to invalidates.
+    pp::Rect scroll_rect;
+
+    // A list of all the individual dirty rectangles. This is an aggregated list
+    // of all invalidate calls. Different rectangles may be unified to produce a
+    // minimal list with no overlap that is more efficient to paint. This list
+    // also contains the region exposed by any scroll command.
+    std::vector<pp::Rect> paint_rects;
+  };
+
+  PaintAggregator();
+
+  // There is a PendingUpdate if InvalidateRect or ScrollRect were called and
+  // ClearPendingUpdate was not called.
+  bool HasPendingUpdate() const;
+  void ClearPendingUpdate();
+
+  PaintUpdate GetPendingUpdate();
+
+  // Sets the result of a call to the plugin to paint.  This includes rects that
+  // are finished painting (ready), and ones that are still in-progress
+  // (pending).
+  void SetIntermediateResults(const std::vector<ReadyRect>& ready,
+                              const std::vector<pp::Rect>& pending);
+
+  // Returns the rectangles that are ready to be painted.
+  std::vector<ReadyRect> GetReadyRects() const;
+
+  // The given rect should be repainted.
+  void InvalidateRect(const pp::Rect& rect);
+
+  // The given rect should be scrolled by the given amounts.
+  void ScrollRect(const pp::Rect& clip_rect, const pp::Point& amount);
+
+ private:
+  // This structure is an internal version of PaintUpdate. It's different in
+  // two respects:
+  //
+  //  - The scroll damange (area exposed by the scroll operation, if any) is
+  //    maintained separately from the dirty rects generated by calling
+  //    InvalidateRect. We need to know this distinction for some operations.
+  //
+  //  - The paint bounds union is computed on the fly so we don't have to keep
+  //    a rectangle up-to-date as we do different operations.
+  class InternalPaintUpdate {
+   public:
+    InternalPaintUpdate();
+    ~InternalPaintUpdate();
+
+    // Computes the rect damaged by scrolling within |scroll_rect| by
+    // |scroll_delta|. This rect must be repainted. It is not included in
+    // paint_rects.
+    pp::Rect GetScrollDamage() const;
+
+    pp::Point scroll_delta;
+    pp::Rect scroll_rect;
+
+    // Does not include the scroll damage rect unless
+    // synthesized_scroll_damage_rect_ is set.
+    std::vector<pp::Rect> paint_rects;
+
+    // Rectangles that are finished painting.
+    std::vector<ReadyRect> ready_rects;
+
+    // Whether we have added the scroll damage rect to paint_rects yet or not.
+    bool synthesized_scroll_damage_rect_;
+  };
+
+  pp::Rect ScrollPaintRect(const pp::Rect& paint_rect,
+                           const pp::Point& amount) const;
+  void InvalidateScrollRect();
+
+  // Internal method used by InvalidateRect. If |check_scroll| is true, then the
+  // method checks if there's a pending scroll and if so also invalidates |rect|
+  // in the new scroll position.
+  void InvalidateRectInternal(const pp::Rect& rect, bool check_scroll);
+
+  InternalPaintUpdate update_;
+};
+
+#endif  // PDF_PAINT_AGGREGATOR_H_
diff --git a/xfa_test/pdf/paint_manager.cc b/xfa_test/pdf/paint_manager.cc
new file mode 100644
index 0000000000..f452b37186
--- /dev/null
+++ b/xfa_test/pdf/paint_manager.cc
@@ -0,0 +1,302 @@
+// Copyright (c) 2010 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "pdf/paint_manager.h"
+
+#include <algorithm>
+
+#include "base/logging.h"
+#include "ppapi/c/pp_errors.h"
+#include "ppapi/cpp/instance.h"
+#include "ppapi/cpp/module.h"
+
+PaintManager::PaintManager(pp::Instance* instance,
+                           Client* client,
+                           bool is_always_opaque)
+    : instance_(instance),
+      client_(client),
+      is_always_opaque_(is_always_opaque),
+      callback_factory_(NULL),
+      manual_callback_pending_(false),
+      flush_pending_(false),
+      has_pending_resize_(false),
+      graphics_need_to_be_bound_(false),
+      pending_device_scale_(1.0),
+      device_scale_(1.0),
+      in_paint_(false),
+      first_paint_(true),
+      view_size_changed_waiting_for_paint_(false) {
+  // Set the callback object outside of the initializer list to avoid a
+  // compiler warning about using "this" in an initializer list.
+  callback_factory_.Initialize(this);
+
+  // You can not use a NULL client pointer.
+  DCHECK(client);
+}
+
+PaintManager::~PaintManager() {
+}
+
+// static
+pp::Size PaintManager::GetNewContextSize(const pp::Size& current_context_size,
+                                         const pp::Size& plugin_size) {
+  // The amount of additional space in pixels to allocate to the right/bottom of
+  // the context.
+  const int kBufferSize = 50;
+
+  // Default to returning the same size.
+  pp::Size result = current_context_size;
+
+  // The minimum size of the plugin before resizing the context to ensure we
+  // aren't wasting too much memory. We deduct twice the kBufferSize from the
+  // current context size which gives a threshhold that is kBufferSize below
+  // the plugin size when the context size was last computed.
+  pp::Size min_size(
+      std::max(current_context_size.width() - 2 * kBufferSize, 0),
+      std::max(current_context_size.height() - 2 * kBufferSize, 0));
+
+  // If the plugin size is bigger than the current context size, we need to
+  // resize the context. If the plugin size is smaller than the current
+  // context size by a given threshhold then resize the context so that we
+  // aren't wasting too much memory.
+  if (plugin_size.width() > current_context_size.width() ||
+      plugin_size.height() > current_context_size.height() ||
+      plugin_size.width() < min_size.width() ||
+      plugin_size.height() < min_size.height()) {
+      // Create a larger context than needed so that if we only resize by a
+      // small margin, we don't need a new context.
+      result = pp::Size(plugin_size.width() + kBufferSize,
+                        plugin_size.height() + kBufferSize);
+  }
+
+  return result;
+}
+
+void PaintManager::Initialize(pp::Instance* instance,
+                              Client* client,
+                              bool is_always_opaque) {
+  DCHECK(!instance_ && !client_);  // Can't initialize twice.
+  instance_ = instance;
+  client_ = client;
+  is_always_opaque_ = is_always_opaque;
+}
+
+void PaintManager::SetSize(const pp::Size& new_size, float device_scale) {
+  if (GetEffectiveSize() == new_size &&
+      GetEffectiveDeviceScale() == device_scale)
+    return;
+
+  has_pending_resize_ = true;
+  pending_size_ = new_size;
+  pending_device_scale_ = device_scale;
+
+  view_size_changed_waiting_for_paint_ = true;
+
+  Invalidate();
+}
+
+void PaintManager::Invalidate() {
+  // You must call SetSize before using.
+  DCHECK(!graphics_.is_null() || has_pending_resize_);
+
+  EnsureCallbackPending();
+  aggregator_.InvalidateRect(pp::Rect(GetEffectiveSize()));
+}
+
+void PaintManager::InvalidateRect(const pp::Rect& rect) {
+  DCHECK(!in_paint_);
+
+  // You must call SetSize before using.
+  DCHECK(!graphics_.is_null() || has_pending_resize_);
+
+  // Clip the rect to the device area.
+  pp::Rect clipped_rect = rect.Intersect(pp::Rect(GetEffectiveSize()));
+  if (clipped_rect.IsEmpty())
+    return;  // Nothing to do.
+
+  EnsureCallbackPending();
+  aggregator_.InvalidateRect(clipped_rect);
+}
+
+void PaintManager::ScrollRect(const pp::Rect& clip_rect,
+                              const pp::Point& amount) {
+  DCHECK(!in_paint_);
+
+  // You must call SetSize before using.
+  DCHECK(!graphics_.is_null() || has_pending_resize_);
+
+  EnsureCallbackPending();
+
+  aggregator_.ScrollRect(clip_rect, amount);
+}
+
+pp::Size PaintManager::GetEffectiveSize() const {
+  return has_pending_resize_ ? pending_size_ : plugin_size_;
+}
+
+float PaintManager::GetEffectiveDeviceScale() const {
+  return has_pending_resize_ ? pending_device_scale_ : device_scale_;
+}
+
+void PaintManager::EnsureCallbackPending() {
+  // The best way for us to do the next update is to get a notification that
+  // a previous one has completed. So if we're already waiting for one, we
+  // don't have to do anything differently now.
+  if (flush_pending_)
+    return;
+
+  // If no flush is pending, we need to do a manual call to get back to the
+  // main thread. We may have one already pending, or we may need to schedule.
+  if (manual_callback_pending_)
+    return;
+
+  pp::Module::Get()->core()->CallOnMainThread(
+      0,
+      callback_factory_.NewCallback(&PaintManager::OnManualCallbackComplete),
+      0);
+  manual_callback_pending_ = true;
+}
+
+void PaintManager::DoPaint() {
+  in_paint_ = true;
+
+  std::vector<ReadyRect> ready;
+  std::vector<pp::Rect> pending;
+
+  DCHECK(aggregator_.HasPendingUpdate());
+
+  // Apply any pending resize. Setting the graphics to this class must happen
+  // before asking the plugin to paint in case it requests invalides or resizes.
+  // However, the bind must not happen until afterward since we don't want to
+  // have an unpainted device bound. The needs_binding flag tells us whether to
+  // do this later.
+  if (has_pending_resize_) {
+    plugin_size_ = pending_size_;
+    // Only create a new graphics context if the current context isn't big
+    // enough or if it is far too big. This avoids creating a new context if
+    // we only resize by a small amount.
+    pp::Size new_size = GetNewContextSize(graphics_.size(), pending_size_);
+    if (graphics_.size() != new_size) {
+      graphics_ = pp::Graphics2D(instance_, new_size, is_always_opaque_);
+      graphics_need_to_be_bound_ = true;
+
+      // Since we're binding a new one, all of the callbacks have been canceled.
+      manual_callback_pending_ = false;
+      flush_pending_ = false;
+      callback_factory_.CancelAll();
+    }
+
+    if (pending_device_scale_ != 1.0)
+      graphics_.SetScale(1.0 / pending_device_scale_);
+    device_scale_ = pending_device_scale_;
+
+    // This must be cleared before calling into the plugin since it may do
+    // additional invalidation or sizing operations.
+    has_pending_resize_ = false;
+    pending_size_ = pp::Size();
+  }
+
+  PaintAggregator::PaintUpdate update = aggregator_.GetPendingUpdate();
+  client_->OnPaint(update.paint_rects, &ready, &pending);
+
+  if (ready.empty() && pending.empty()) {
+    in_paint_ = false;
+    return;  // Nothing was painted, don't schedule a flush.
+  }
+
+  std::vector<PaintAggregator::ReadyRect> ready_now;
+  if (pending.empty()) {
+    std::vector<PaintAggregator::ReadyRect> temp_ready;
+    for (size_t i = 0; i < ready.size(); ++i)
+      temp_ready.push_back(ready[i]);
+    aggregator_.SetIntermediateResults(temp_ready, pending);
+    ready_now = aggregator_.GetReadyRects();
+    aggregator_.ClearPendingUpdate();
+
+    // Apply any scroll first.
+    if (update.has_scroll)
+      graphics_.Scroll(update.scroll_rect, update.scroll_delta);
+
+    view_size_changed_waiting_for_paint_ = false;
+  } else {
+    std::vector<PaintAggregator::ReadyRect> ready_later;
+    for (size_t i = 0; i < ready.size(); ++i) {
+      // Don't flush any part (i.e. scrollbars) if we're resizing the browser,
+      // as that'll lead to flashes.  Until we flush, the browser will use the
+      // previous image, but if we flush, it'll revert to using the blank image.
+      // We make an exception for the first paint since we want to show the
+      // default background color instead of the pepper default of black.
+      if (ready[i].flush_now &&
+          (!view_size_changed_waiting_for_paint_ || first_paint_)) {
+        ready_now.push_back(ready[i]);
+      } else {
+        ready_later.push_back(ready[i]);
+      }
+    }
+    // Take the rectangles, except the ones that need to be flushed right away,
+    // and save them so that everything is flushed at once.
+    aggregator_.SetIntermediateResults(ready_later, pending);
+
+    if (ready_now.empty()) {
+      in_paint_ = false;
+      EnsureCallbackPending();
+      return;
+    }
+  }
+
+  for (size_t i = 0; i < ready_now.size(); ++i) {
+    graphics_.PaintImageData(
+        ready_now[i].image_data, ready_now[i].offset, ready_now[i].rect);
+  }
+
+  int32_t result = graphics_.Flush(
+      callback_factory_.NewCallback(&PaintManager::OnFlushComplete));
+
+  // If you trigger this assertion, then your plugin has called Flush()
+  // manually. When using the PaintManager, you should not call Flush, it will
+  // handle that for you because it needs to know when it can do the next paint
+  // by implementing the flush callback.
+  //
+  // Another possible cause of this assertion is re-using devices. If you
+  // use one device, swap it with another, then swap it back, we won't know
+  // that we've already scheduled a Flush on the first device. It's best to not
+  // re-use devices in this way.
+  DCHECK(result != PP_ERROR_INPROGRESS);
+
+  if (result == PP_OK_COMPLETIONPENDING) {
+    flush_pending_ = true;
+  } else {
+    DCHECK(result == PP_OK);  // Catch all other errors in debug mode.
+  }
+
+  in_paint_ = false;
+  first_paint_ = false;
+
+  if (graphics_need_to_be_bound_) {
+    instance_->BindGraphics(graphics_);
+    graphics_need_to_be_bound_ = false;
+  }
+}
+
+void PaintManager::OnFlushComplete(int32_t) {
+  DCHECK(flush_pending_);
+  flush_pending_ = false;
+
+  // If more paints were enqueued while we were waiting for the flush to
+  // complete, execute them now.
+  if (aggregator_.HasPendingUpdate())
+    DoPaint();
+}
+
+void PaintManager::OnManualCallbackComplete(int32_t) {
+  DCHECK(manual_callback_pending_);
+  manual_callback_pending_ = false;
+
+  // Just because we have a manual callback doesn't mean there are actually any
+  // invalid regions. Even though we only schedule this callback when something
+  // is pending, a Flush callback could have come in before this callback was
+  // executed and that could have cleared the queue.
+  if (aggregator_.HasPendingUpdate())
+    DoPaint();
+}
diff --git a/xfa_test/pdf/paint_manager.h b/xfa_test/pdf/paint_manager.h
new file mode 100644
index 0000000000..7755eb6829
--- /dev/null
+++ b/xfa_test/pdf/paint_manager.h
@@ -0,0 +1,205 @@
+// Copyright (c) 2010 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef PDF_PAINT_MANAGER_H_
+#define PDF_PAINT_MANAGER_H_
+
+#include <vector>
+
+#include "pdf/paint_aggregator.h"
+#include "ppapi/cpp/graphics_2d.h"
+#include "ppapi/utility/completion_callback_factory.h"
+
+namespace pp {
+class Graphics2D;
+class Instance;
+class Point;
+class Rect;
+};
+
+// Custom PaintManager for the PDF plugin.  This is branched from the Pepper
+// version.  The difference is that this supports progressive rendering of dirty
+// rects, where multiple calls to the rendering engine are needed.  It also
+// supports having higher-priority rects flushing right away, i.e. the
+// scrollbars.
+//
+// The client's OnPaint
+class PaintManager {
+ public:
+  // Like PaintAggregator's version, but allows the plugin to tell us whether
+  // it should be flushed to the screen immediately or when the rest of the
+  // plugin viewport is ready.
+  struct ReadyRect {
+    pp::Point offset;
+    pp::Rect rect;
+    pp::ImageData image_data;
+    bool flush_now;
+
+    ReadyRect(const pp::Rect& r, const pp::ImageData& i, bool f)
+        : rect(r), image_data(i), flush_now(f) {}
+
+    operator PaintAggregator::ReadyRect() const {
+      PaintAggregator::ReadyRect rv;
+      rv.offset = offset;
+      rv.rect = rect;
+      rv.image_data = image_data;
+      return rv;
+    }
+  };
+  class Client {
+   public:
+    // Paints the given invalid area of the plugin to the given graphics
+    // device. Returns true if anything was painted.
+    //
+    // You are given the list of rects to paint in |paint_rects|.  You can
+    // combine painting into less rectangles if it's more efficient.  When a
+    // rect is painted, information about that paint should be inserted into
+    // |ready|.  Otherwise if a paint needs more work, add the rect to
+    // |pending|.  If |pending| is not empty, your OnPaint function will get
+    // called again.  Once OnPaint is called and it returns no pending rects,
+    // all the previously ready rects will be flushed on screen.  The exception
+    // is for ready rects that have |flush_now| set to true.  These will be
+    // flushed right away.
+    //
+    // Do not call Flush() on the graphics device, this will be done
+    // automatically if you return true from this function since the
+    // PaintManager needs to handle the callback.
+    //
+    // Calling Invalidate/Scroll is not allowed while inside an OnPaint
+    virtual void OnPaint(const std::vector<pp::Rect>& paint_rects,
+                         std::vector<ReadyRect>* ready,
+                         std::vector<pp::Rect>* pending) = 0;
+   protected:
+    // You shouldn't be doing deleting through this interface.
+    virtual ~Client() {}
+  };
+
+  // The instance is the plugin instance using this paint manager to do its
+  // painting. Painting will automatically go to this instance and you don't
+  // have to manually bind any device context (this is all handled by the
+  // paint manager).
+  //
+  // The Client is a non-owning pointer and must remain valid (normally the
+  // object implementing the Client interface will own the paint manager).
+  //
+  // The is_always_opaque flag will be passed to the device contexts that this
+  // class creates. Set this to true if your plugin always draws an opaque
+  // image to the device. This is used as a hint to the browser that it does
+  // not need to do alpha blending, which speeds up painting. If you generate
+  // non-opqaue pixels or aren't sure, set this to false for more general
+  // blending.
+  //
+  // If you set is_always_opaque, your alpha channel should always be set to
+  // 0xFF or there may be painting artifacts. Being opaque will allow the
+  // browser to do a memcpy rather than a blend to paint the plugin, and this
+  // means your alpha values will get set on the page backing store. If these
+  // values are incorrect, it could mess up future blending. If you aren't
+  // sure, it is always correct to specify that it it not opaque.
+  //
+  // You will need to call SetSize before this class will do anything. Normally
+  // you do this from the ViewChanged method of your plugin instance.
+  PaintManager(pp::Instance* instance, Client* client, bool is_always_opaque);
+
+  ~PaintManager();
+
+  // Returns the size of the graphics context to allocate for a given plugin
+  // size. We may allocated a slightly larger buffer than required so that we
+  // don't have to resize the context when scrollbars appear/dissapear due to
+  // zooming (which can result in flickering).
+  static pp::Size GetNewContextSize(const pp::Size& current_context_size,
+                                    const pp::Size& plugin_size);
+
+  // You must call this function before using if you use the 0-arg constructor.
+  // See the constructor for what these arguments mean.
+  void Initialize(pp::Instance* instance, Client* client,
+                  bool is_always_opaque);
+
+  // Sets the size of the plugin. If the size is the same as the previous call,
+  // this will be a NOP. If the size has changed, a new device will be
+  // allocated to the given size and a paint to that device will be scheduled.
+  //
+  // This is intended to be called from ViewChanged with the size of the
+  // plugin. Since it tracks the old size and only allocates when the size
+  // changes, you can always call this function without worrying about whether
+  // the size changed or ViewChanged is called for another reason (like the
+  // position changed).
+  void SetSize(const pp::Size& new_size, float new_device_scale);
+
+  // Invalidate the entire plugin.
+  void Invalidate();
+
+  // Invalidate the given rect.
+  void InvalidateRect(const pp::Rect& rect);
+
+  // The given rect should be scrolled by the given amounts.
+  void ScrollRect(const pp::Rect& clip_rect, const pp::Point& amount);
+
+  // Returns the size of the graphics context for the next paint operation.
+  // This is the pending size if a resize is pending (the plugin has called
+  // SetSize but we haven't actually painted it yet), or the current size of
+  // no resize is pending.
+  pp::Size GetEffectiveSize() const;
+  float GetEffectiveDeviceScale() const;
+
+ private:
+  // Disallow copy and assign (these are unimplemented).
+  PaintManager(const PaintManager&);
+  PaintManager& operator=(const PaintManager&);
+
+  // Makes sure there is a callback that will trigger a paint at a later time.
+  // This will be either a Flush callback telling us we're allowed to generate
+  // more data, or, if there's no flush callback pending, a manual call back
+  // to the message loop via ExecuteOnMainThread.
+  void EnsureCallbackPending();
+
+  // Does the client paint and executes a Flush if necessary.
+  void DoPaint();
+
+  // Callback for asynchronous completion of Flush.
+  void OnFlushComplete(int32_t);
+
+  // Callback for manual scheduling of paints when there is no flush callback
+  // pending.
+  void OnManualCallbackComplete(int32_t);
+
+  pp::Instance* instance_;
+
+  // Non-owning pointer. See the constructor.
+  Client* client_;
+
+  bool is_always_opaque_;
+
+  pp::CompletionCallbackFactory<PaintManager> callback_factory_;
+
+  // This graphics device will be is_null() if no graphics has been manually
+  // set yet.
+  pp::Graphics2D graphics_;
+
+  PaintAggregator aggregator_;
+
+  // See comment for EnsureCallbackPending for more on how these work.
+  bool manual_callback_pending_;
+  bool flush_pending_;
+
+  // When we get a resize, we don't bind right away (see SetSize). The
+  // has_pending_resize_ tells us that we need to do a resize for the next
+  // paint operation. When true, the new size is in pending_size_.
+  bool has_pending_resize_;
+  bool graphics_need_to_be_bound_;
+  pp::Size pending_size_;
+  pp::Size plugin_size_;
+  float pending_device_scale_;
+  float device_scale_;
+
+  // True iff we're in the middle of a paint.
+  bool in_paint_;
+
+  // True if we haven't painted the plugin viewport yet.
+  bool first_paint_;
+
+  // True when the view size just changed and we're waiting for a paint.
+  bool view_size_changed_waiting_for_paint_;
+};
+
+#endif  // PDF_PAINT_MANAGER_H_
diff --git a/xfa_test/pdf/pdf.cc b/xfa_test/pdf/pdf.cc
new file mode 100644
index 0000000000..6a4507f4fc
--- /dev/null
+++ b/xfa_test/pdf/pdf.cc
@@ -0,0 +1,275 @@
+// Copyright (c) 2010 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "pdf/pdf.h"
+
+#if defined(OS_WIN)
+#include <windows.h>
+#endif
+
+#include "base/command_line.h"
+#include "base/logging.h"
+#include "pdf/instance.h"
+#include "pdf/out_of_process_instance.h"
+#include "ppapi/c/ppp.h"
+#include "ppapi/cpp/private/pdf.h"
+
+bool g_sdk_initialized_via_pepper = false;
+
+// The Mac release builds discard CreateModule and the entire PDFModule
+// definition because they are not referenced here. This causes the Pepper
+// exports (PPP_GetInterface etc) to not be exported. So we force the linker
+// to include this code by using __attribute__((used)).
+#if __GNUC__ >= 4
+#define PDF_USED __attribute__((used))
+#else
+#define PDF_USED
+#endif
+
+#if defined(OS_WIN)
+HMODULE g_hmodule;
+
+void HandleInvalidParameter(const wchar_t* expression,
+                            const wchar_t* function,
+                            const wchar_t* file,
+                            unsigned int line,
+                            uintptr_t reserved) {
+  // Do the same as Chrome's CHECK(false) which is undefined.
+  ::base::debug::BreakDebugger();
+  return;
+}
+
+void HandlePureVirtualCall() {
+  // Do the same as Chrome's CHECK(false) which is undefined.
+  ::base::debug::BreakDebugger();
+  return;
+}
+
+
+BOOL APIENTRY DllMain(HMODULE module, DWORD reason_for_call, LPVOID reserved) {
+  g_hmodule = module;
+  if (reason_for_call == DLL_PROCESS_ATTACH) {
+    // On windows following handlers work only inside module. So breakpad in
+    // chrome.dll does not catch that. To avoid linking related code or
+    // duplication breakpad_win.cc::InitCrashReporter() just catch errors here
+    // and crash in a way interceptable by breakpad of parent module.
+    _set_invalid_parameter_handler(HandleInvalidParameter);
+    _set_purecall_handler(HandlePureVirtualCall);
+  }
+  return TRUE;
+}
+
+#endif
+
+namespace pp {
+
+PDF_USED Module* CreateModule() {
+  return new chrome_pdf::PDFModule();
+}
+
+}  // namespace pp
+
+namespace chrome_pdf {
+
+PDFModule::PDFModule() {
+}
+
+PDFModule::~PDFModule() {
+  if (g_sdk_initialized_via_pepper) {
+    chrome_pdf::ShutdownSDK();
+    g_sdk_initialized_via_pepper = false;
+  }
+}
+
+bool PDFModule::Init() {
+  return true;
+}
+
+pp::Instance* PDFModule::CreateInstance(PP_Instance instance) {
+  if (!g_sdk_initialized_via_pepper) {
+    void* data = NULL;
+#if defined(OS_WIN)
+    data = g_hmodule;
+#endif
+    if (!chrome_pdf::InitializeSDK(data))
+      return NULL;
+    g_sdk_initialized_via_pepper = true;
+  }
+
+  if (pp::PDF::IsOutOfProcess(pp::InstanceHandle(instance)))
+    return new OutOfProcessInstance(instance);
+  return new Instance(instance);
+}
+
+}  // namespace chrome_pdf
+
+extern "C" {
+
+// TODO(sanjeevr): It might make sense to provide more stateful wrappers over
+// the internal PDF SDK (such as LoadDocument, LoadPage etc). Determine if we
+// need to provide this.
+// Wrapper exports over the PDF engine that can be used by an external module
+// such as Chrome (since Chrome cannot directly pull in PDFium sources).
+#if defined(OS_WIN)
+// |pdf_buffer| is the buffer that contains the entire PDF document to be
+//     rendered.
+// |buffer_size| is the size of |pdf_buffer| in bytes.
+// |page_number| is the 0-based index of the page to be rendered.
+// |dc| is the device context to render into.
+// |dpi_x| and |dpi_y| are the x and y resolutions respectively. If either
+//     value is -1, the dpi from the DC will be used.
+// |bounds_origin_x|, |bounds_origin_y|, |bounds_width| and |bounds_height|
+//     specify a bounds rectangle within the DC in which to render the PDF
+//     page.
+// |fit_to_bounds| specifies whether the output should be shrunk to fit the
+//     supplied bounds if the page size is larger than the bounds in any
+//     dimension. If this is false, parts of the PDF page that lie outside
+//     the bounds will be clipped.
+// |stretch_to_bounds| specifies whether the output should be stretched to fit
+//     the supplied bounds if the page size is smaller than the bounds in any
+//     dimension.
+// If both |fit_to_bounds| and |stretch_to_bounds| are true, then
+//     |fit_to_bounds| is honored first.
+// |keep_aspect_ratio| If any scaling is to be done is true, this flag
+//     specifies whether the original aspect ratio of the page should be
+//     preserved while scaling.
+// |center_in_bounds| specifies whether the final image (after any scaling is
+//     done) should be centered within the given bounds.
+// |autorotate| specifies whether the final image should be rotated to match
+//     the output bound.
+// Returns false if the document or the page number are not valid.
+PP_EXPORT bool RenderPDFPageToDC(const void* pdf_buffer,
+                                 int buffer_size,
+                                 int page_number,
+                                 HDC dc,
+                                 int dpi_x,
+                                 int dpi_y,
+                                 int bounds_origin_x,
+                                 int bounds_origin_y,
+                                 int bounds_width,
+                                 int bounds_height,
+                                 bool fit_to_bounds,
+                                 bool stretch_to_bounds,
+                                 bool keep_aspect_ratio,
+                                 bool center_in_bounds,
+                                 bool autorotate) {
+  if (!g_sdk_initialized_via_pepper) {
+    if (!chrome_pdf::InitializeSDK(g_hmodule)) {
+      return false;
+    }
+  }
+  scoped_ptr<chrome_pdf::PDFEngineExports> engine_exports(
+      chrome_pdf::PDFEngineExports::Create());
+  chrome_pdf::PDFEngineExports::RenderingSettings settings(
+      dpi_x, dpi_y, pp::Rect(bounds_origin_x, bounds_origin_y, bounds_width,
+                             bounds_height),
+      fit_to_bounds, stretch_to_bounds, keep_aspect_ratio, center_in_bounds,
+      autorotate);
+  bool ret = engine_exports->RenderPDFPageToDC(pdf_buffer, buffer_size,
+                                               page_number, settings, dc);
+  if (!g_sdk_initialized_via_pepper) {
+    chrome_pdf::ShutdownSDK();
+  }
+  return ret;
+}
+
+#endif  // OS_WIN
+
+// |page_count| and |max_page_width| are optional and can be NULL.
+// Returns false if the document is not valid.
+PDF_USED PP_EXPORT
+bool GetPDFDocInfo(const void* pdf_buffer,
+                   int buffer_size, int* page_count,
+                   double* max_page_width) {
+  if (!g_sdk_initialized_via_pepper) {
+    void* data = NULL;
+#if defined(OS_WIN)
+    data = g_hmodule;
+#endif
+    if (!chrome_pdf::InitializeSDK(data))
+      return false;
+  }
+  scoped_ptr<chrome_pdf::PDFEngineExports> engine_exports(
+      chrome_pdf::PDFEngineExports::Create());
+  bool ret = engine_exports->GetPDFDocInfo(
+      pdf_buffer, buffer_size, page_count, max_page_width);
+  if (!g_sdk_initialized_via_pepper) {
+    chrome_pdf::ShutdownSDK();
+  }
+  return ret;
+}
+
+// Gets the dimensions of a specific page in a document.
+// |pdf_buffer| is the buffer that contains the entire PDF document to be
+//     rendered.
+// |pdf_buffer_size| is the size of |pdf_buffer| in bytes.
+// |page_number| is the page number that the function will get the dimensions
+//     of.
+// |width| is the output for the width of the page in points.
+// |height| is the output for the height of the page in points.
+// Returns false if the document or the page number are not valid.
+PDF_USED PP_EXPORT
+bool GetPDFPageSizeByIndex(const void* pdf_buffer,
+                           int pdf_buffer_size, int page_number,
+                           double* width, double* height) {
+  if (!g_sdk_initialized_via_pepper) {
+    void* data = NULL;
+#if defined(OS_WIN)
+    data = g_hmodule;
+#endif
+    if (!chrome_pdf::InitializeSDK(data))
+      return false;
+  }
+  scoped_ptr<chrome_pdf::PDFEngineExports> engine_exports(
+      chrome_pdf::PDFEngineExports::Create());
+  bool ret = engine_exports->GetPDFPageSizeByIndex(
+      pdf_buffer, pdf_buffer_size, page_number, width, height);
+  if (!g_sdk_initialized_via_pepper)
+    chrome_pdf::ShutdownSDK();
+  return ret;
+}
+
+// Renders PDF page into 4-byte per pixel BGRA color bitmap.
+// |pdf_buffer| is the buffer that contains the entire PDF document to be
+//     rendered.
+// |pdf_buffer_size| is the size of |pdf_buffer| in bytes.
+// |page_number| is the 0-based index of the page to be rendered.
+// |bitmap_buffer| is the output buffer for bitmap.
+// |bitmap_width| is the width of the output bitmap.
+// |bitmap_height| is the height of the output bitmap.
+// |dpi| is the resolutions.
+// |autorotate| specifies whether the final image should be rotated to match
+//     the output bound.
+// Returns false if the document or the page number are not valid.
+PDF_USED PP_EXPORT
+bool RenderPDFPageToBitmap(const void* pdf_buffer,
+                           int pdf_buffer_size,
+                           int page_number,
+                           void* bitmap_buffer,
+                           int bitmap_width,
+                           int bitmap_height,
+                           int dpi,
+                           bool autorotate) {
+  if (!g_sdk_initialized_via_pepper) {
+    void* data = NULL;
+#if defined(OS_WIN)
+    data = g_hmodule;
+#endif
+    if (!chrome_pdf::InitializeSDK(data))
+      return false;
+  }
+  scoped_ptr<chrome_pdf::PDFEngineExports> engine_exports(
+      chrome_pdf::PDFEngineExports::Create());
+  chrome_pdf::PDFEngineExports::RenderingSettings settings(
+      dpi, dpi, pp::Rect(bitmap_width, bitmap_height), true, false, true, true,
+      autorotate);
+  bool ret = engine_exports->RenderPDFPageToBitmap(
+      pdf_buffer, pdf_buffer_size, page_number, settings, bitmap_buffer);
+  if (!g_sdk_initialized_via_pepper) {
+    chrome_pdf::ShutdownSDK();
+  }
+  return ret;
+}
+
+}  // extern "C"
diff --git a/xfa_test/pdf/pdf.def b/xfa_test/pdf/pdf.def
new file mode 100644
index 0000000000..b36918bb27
--- /dev/null
+++ b/xfa_test/pdf/pdf.def
@@ -0,0 +1,7 @@
+LIBRARY pdf
+
+EXPORTS
+  NP_GetEntryPoints   @1
+  NP_Initialize       @2
+  NP_Shutdown         @3
+
diff --git a/xfa_test/pdf/pdf.gyp b/xfa_test/pdf/pdf.gyp
new file mode 100644
index 0000000000..f1e8e3e658
--- /dev/null
+++ b/xfa_test/pdf/pdf.gyp
@@ -0,0 +1,200 @@
+{
+  'variables': {
+    'chromium_code': 1,
+    'pdf_engine%': 0,  # 0 PDFium
+  },
+  'target_defaults': {
+    'cflags': [
+      '-fPIC',
+    ],
+  },
+  'targets': [
+    {
+      'target_name': 'pdf',
+      'type': 'loadable_module',
+      'msvs_guid': '647863C0-C7A3-469A-B1ED-AD7283C34BED',
+      'dependencies': [
+        '../base/base.gyp:base',
+        '../net/net.gyp:net',
+        '../ppapi/ppapi.gyp:ppapi_cpp',
+        '../third_party/pdfium/pdfium.gyp:pdfium',
+      ],
+      'xcode_settings': {
+        'INFOPLIST_FILE': 'Info.plist',
+      },
+      'mac_framework_dirs': [
+        '$(SDKROOT)/System/Library/Frameworks/ApplicationServices.framework/Frameworks',
+      ],
+      'ldflags': [ '-L<(PRODUCT_DIR)',],
+      'sources': [
+        'button.h',
+        'button.cc',
+        'chunk_stream.h',
+        'chunk_stream.cc',
+        'control.h',
+        'control.cc',
+        'document_loader.h',
+        'document_loader.cc',
+        'draw_utils.cc',
+        'draw_utils.h',
+        'fading_control.cc',
+        'fading_control.h',
+        'fading_controls.cc',
+        'fading_controls.h',
+        'instance.cc',
+        'instance.h',
+        'number_image_generator.cc',
+        'number_image_generator.h',
+        'out_of_process_instance.cc',
+        'out_of_process_instance.h',
+        'page_indicator.cc',
+        'page_indicator.h',
+        'paint_aggregator.cc',
+        'paint_aggregator.h',
+        'paint_manager.cc',
+        'paint_manager.h',
+        'pdf.cc',
+        'pdf.h',
+        'pdf.rc',
+        'progress_control.cc',
+        'progress_control.h',
+        'pdf_engine.h',
+        'preview_mode_client.cc',
+        'preview_mode_client.h',
+        'resource.h',
+        'resource_consts.h',
+        'thumbnail_control.cc',
+        'thumbnail_control.h',
+        '../chrome/browser/chrome_page_zoom_constants.cc',
+        '../content/common/page_zoom.cc',
+      ],
+      'conditions': [
+        ['pdf_engine==0', {
+          'sources': [
+            'pdfium/pdfium_assert_matching_enums.cc',
+            'pdfium/pdfium_engine.cc',
+            'pdfium/pdfium_engine.h',
+            'pdfium/pdfium_mem_buffer_file_read.cc',
+            'pdfium/pdfium_mem_buffer_file_read.h',
+            'pdfium/pdfium_mem_buffer_file_write.cc',
+            'pdfium/pdfium_mem_buffer_file_write.h',
+            'pdfium/pdfium_page.cc',
+            'pdfium/pdfium_page.h',
+            'pdfium/pdfium_range.cc',
+            'pdfium/pdfium_range.h',
+          ],
+        }],
+        ['OS!="win"', {
+          'sources!': [
+            'pdf.rc',
+          ],
+        }],
+        ['OS=="mac"', {
+          'mac_bundle': 1,
+          'product_name': 'PDF',
+          'product_extension': 'plugin',
+          # Strip the shipping binary of symbols so "Foxit" doesn't appear in
+          # the binary.  Symbols are stored in a separate .dSYM.
+          'variables': {
+            'mac_real_dsym': 1,
+          },
+          'sources+': [
+            'Info.plist'
+          ],
+        }],
+        ['OS=="win"', {
+          'defines': [
+            'COMPILE_CONTENT_STATICALLY',
+          ],
+          # TODO(jschuh): crbug.com/167187 fix size_t to int truncations.
+          'msvs_disabled_warnings': [ 4267, ],
+        }],
+        ['OS=="linux"', {
+          'configurations': {
+            'Release_Base': {
+              #'cflags': [ '-fno-weak',],  # get rid of symbols that strip doesn't remove.
+              # Don't do this for now since official builder will take care of it.  That
+              # way symbols can still be uploaded to the crash server.
+              #'ldflags': [ '-s',],  # strip local symbols from binary.
+            },
+          },
+        }],
+      ],
+    },
+  ],
+  'conditions': [
+    # CrOS has a separate step to do this.
+    ['OS=="linux" and chromeos==0',
+      { 'targets': [
+        {
+          'target_name': 'pdf_linux_symbols',
+          'type': 'none',
+          'conditions': [
+            ['linux_dump_symbols==1', {
+              'actions': [
+                {
+                  'action_name': 'dump_symbols',
+                  'inputs': [
+                    '<(DEPTH)/build/linux/dump_app_syms',
+                    '<(PRODUCT_DIR)/dump_syms',
+                    '<(PRODUCT_DIR)/libpdf.so',
+                  ],
+                  'outputs': [
+                    '<(PRODUCT_DIR)/libpdf.so.breakpad.<(target_arch)',
+                  ],
+                  'action': ['<(DEPTH)/build/linux/dump_app_syms',
+                             '<(PRODUCT_DIR)/dump_syms',
+                             '<(linux_strip_binary)',
+                             '<(PRODUCT_DIR)/libpdf.so',
+                             '<@(_outputs)'],
+                  'message': 'Dumping breakpad symbols to <(_outputs)',
+                  'process_outputs_as_sources': 1,
+                },
+              ],
+              'dependencies': [
+                'pdf',
+                '../breakpad/breakpad.gyp:dump_syms',
+              ],
+            }],
+          ],
+        },
+      ],
+    },],  # OS=="linux" and chromeos==0
+    ['OS=="win" and fastbuild==0 and target_arch=="ia32" and syzyasan==1', {
+      'variables': {
+        'dest_dir': '<(PRODUCT_DIR)/syzygy',
+      },
+      'targets': [
+        {
+          'target_name': 'pdf_syzyasan',
+          'type': 'none',
+          'sources' : [],
+          'dependencies': [
+            'pdf',
+          ],
+          # Instrument PDFium with SyzyAsan.
+          'actions': [
+            {
+              'action_name': 'Instrument PDFium with SyzyAsan',
+              'inputs': [
+                '<(PRODUCT_DIR)/pdf.dll',
+              ],
+              'outputs': [
+                '<(dest_dir)/pdf.dll',
+                '<(dest_dir)/pdf.dll.pdb',
+              ],
+              'action': [
+                'python',
+                '<(DEPTH)/chrome/tools/build/win/syzygy_instrument.py',
+                '--mode', 'asan',
+                '--input_executable', '<(PRODUCT_DIR)/pdf.dll',
+                '--input_symbol', '<(PRODUCT_DIR)/pdf.dll.pdb',
+                '--destination_dir', '<(dest_dir)',
+              ],
+            },
+          ],
+        },
+      ],
+    }],  # OS=="win" and fastbuild==0 and target_arch=="ia32" and syzyasan==1
+  ],
+}
diff --git a/xfa_test/pdf/pdf.h b/xfa_test/pdf/pdf.h
new file mode 100644
index 0000000000..d797bbbaf5
--- /dev/null
+++ b/xfa_test/pdf/pdf.h
@@ -0,0 +1,24 @@
+// Copyright (c) 2010 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef PDF_PDF_H_
+#define PDF_PDF_H_
+
+#include "ppapi/cpp/module.h"
+
+namespace chrome_pdf {
+
+class PDFModule : public pp::Module {
+ public:
+  PDFModule();
+  virtual ~PDFModule();
+
+  // pp::Module implementation.
+  virtual bool Init();
+  virtual pp::Instance* CreateInstance(PP_Instance instance);
+};
+
+}  // namespace chrome_pdf
+
+#endif  // PDF_PDF_H_
diff --git a/xfa_test/pdf/pdf.rc b/xfa_test/pdf/pdf.rc
new file mode 100644
index 0000000000..cbc98e1e4b
--- /dev/null
+++ b/xfa_test/pdf/pdf.rc
@@ -0,0 +1,104 @@
+// Microsoft Visual C++ generated resource script.

+//

+#include "resource.h"

+

+#define APSTUDIO_READONLY_SYMBOLS

+/////////////////////////////////////////////////////////////////////////////

+//

+// Generated from the TEXTINCLUDE 2 resource.

+//

+#include "afxres.h"

+

+/////////////////////////////////////////////////////////////////////////////

+#undef APSTUDIO_READONLY_SYMBOLS

+

+/////////////////////////////////////////////////////////////////////////////

+// English (U.S.) resources

+

+#if !defined(AFX_RESOURCE_DLL) || defined(AFX_TARG_ENU)

+#ifdef _WIN32

+LANGUAGE LANG_ENGLISH, SUBLANG_ENGLISH_US

+#pragma code_page(1252)

+#endif //_WIN32

+

+#ifdef APSTUDIO_INVOKED

+/////////////////////////////////////////////////////////////////////////////

+//

+// TEXTINCLUDE

+//

+

+1 TEXTINCLUDE 

+BEGIN

+    "resource.h\0"

+END

+

+2 TEXTINCLUDE 

+BEGIN

+    "#include ""afxres.h""\r\n"

+    "\0"

+END

+

+3 TEXTINCLUDE 

+BEGIN

+    "\r\n"

+    "\0"

+END

+

+#endif    // APSTUDIO_INVOKED

+

+

+/////////////////////////////////////////////////////////////////////////////

+//

+// Version

+//

+

+VS_VERSION_INFO VERSIONINFO

+ FILEVERSION 1,0,0,1

+ PRODUCTVERSION 1,0,0,1

+ FILEFLAGSMASK 0x17L

+#ifdef _DEBUG

+ FILEFLAGS 0x1L

+#else

+ FILEFLAGS 0x0L

+#endif

+ FILEOS 0x4L

+ FILETYPE 0x2L

+ FILESUBTYPE 0x0L

+BEGIN

+    BLOCK "StringFileInfo"

+    BEGIN

+        BLOCK "040904e4"

+        BEGIN

+            VALUE "FileDescription", "Chrome PDF Viewer"

+            VALUE "FileVersion", "1, 0, 0, 1"

+            VALUE "InternalName", "pdf"

+            VALUE "LegalCopyright", "Copyright (C) 2010"

+            VALUE "MIMEType", "application/pdf"

+            VALUE "FileExtents", "pdf"

+            VALUE "FileOpenName", "Acrobat Portable Document Format"

+            VALUE "OriginalFilename", "pdf.dll"

+            VALUE "ProductName", "Chrome PDF Viewer"

+            VALUE "ProductVersion", "1, 0, 0, 1"

+        END

+    END

+    BLOCK "VarFileInfo"

+    BEGIN

+        VALUE "Translation", 0x409, 1252

+    END

+END

+

+#endif    // English (U.S.) resources

+/////////////////////////////////////////////////////////////////////////////

+

+

+

+#ifndef APSTUDIO_INVOKED

+/////////////////////////////////////////////////////////////////////////////

+//

+// Generated from the TEXTINCLUDE 3 resource.

+//

+

+

+/////////////////////////////////////////////////////////////////////////////

+#endif    // not APSTUDIO_INVOKED

+

diff --git a/xfa_test/pdf/pdf_engine.h b/xfa_test/pdf/pdf_engine.h
new file mode 100644
index 0000000000..cc25a299d8
--- /dev/null
+++ b/xfa_test/pdf/pdf_engine.h
@@ -0,0 +1,321 @@
+// Copyright (c) 2012 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef PDF_PDF_ENGINE_H_
+#define PDF_PDF_ENGINE_H_
+
+#include "build/build_config.h"
+
+#if defined(OS_WIN)
+#include <windows.h>
+#endif
+
+#include <string>
+#include <vector>
+
+#include "base/strings/string16.h"
+
+#include "ppapi/c/dev/pp_cursor_type_dev.h"
+#include "ppapi/c/dev/ppp_printing_dev.h"
+#include "ppapi/c/ppb_input_event.h"
+#include "ppapi/cpp/completion_callback.h"
+#include "ppapi/cpp/image_data.h"
+#include "ppapi/cpp/rect.h"
+#include "ppapi/cpp/size.h"
+#include "ppapi/cpp/url_loader.h"
+
+namespace pp {
+class InputEvent;
+}
+
+const uint32 kBackgroundColor = 0xFFCCCCCC;
+
+namespace chrome_pdf {
+
+class Stream;
+
+#if defined(OS_MACOSX)
+const uint32 kDefaultKeyModifier = PP_INPUTEVENT_MODIFIER_METAKEY;
+#else  // !OS_MACOSX
+const uint32 kDefaultKeyModifier = PP_INPUTEVENT_MODIFIER_CONTROLKEY;
+#endif  // OS_MACOSX
+
+// Do one time initialization of the SDK.  data is platform specific, on Windows
+// it's the instance of the DLL and it's unused on other platforms.
+bool InitializeSDK(void* data);
+// Tells the SDK that we're shutting down.
+void ShutdownSDK();
+
+// This class encapsulates a PDF rendering engine.
+class PDFEngine {
+ public:
+
+  enum DocumentPermission {
+    PERMISSION_COPY,
+    PERMISSION_COPY_ACCESSIBLE,
+    PERMISSION_PRINT_LOW_QUALITY,
+    PERMISSION_PRINT_HIGH_QUALITY,
+  };
+
+  // The interface that's provided to the rendering engine.
+  class Client {
+   public:
+    // Informs the client about the document's size in pixels.
+    virtual void DocumentSizeUpdated(const pp::Size& size) = 0;
+
+    // Informs the client that the given rect needs to be repainted.
+    virtual void Invalidate(const pp::Rect& rect) = 0;
+
+    // Informs the client to scroll the plugin area by the given offset.
+    virtual void Scroll(const pp::Point& point) = 0;
+
+    // Scroll the horizontal/vertical scrollbars to a given position.
+    virtual void ScrollToX(int position) = 0;
+    virtual void ScrollToY(int position) = 0;
+
+    // Scroll to the specified page.
+    virtual void ScrollToPage(int page) = 0;
+
+    // Navigate to the given url.
+    virtual void NavigateTo(const std::string& url, bool open_in_new_tab) = 0;
+
+    // Updates the cursor.
+    virtual void UpdateCursor(PP_CursorType_Dev cursor) = 0;
+
+    // Updates the tick marks in the vertical scrollbar.
+    virtual void UpdateTickMarks(const std::vector<pp::Rect>& tickmarks) = 0;
+
+    // Updates the number of find results for the current search term.  If
+    // there are no matches 0 should be passed in.  Only when the plugin has
+    // finished searching should it pass in the final count with final_result
+    // set to true.
+    virtual void NotifyNumberOfFindResultsChanged(int total,
+                                                  bool final_result) = 0;
+
+    // Updates the index of the currently selected search item.
+    virtual void NotifySelectedFindResultChanged(int current_find_index) = 0;
+
+    // Prompts the user for a password to open this document. The callback is
+    // called when the password is retrieved.
+    virtual void GetDocumentPassword(
+        pp::CompletionCallbackWithOutput<pp::Var> callback) = 0;
+
+    // Puts up an alert with the given message.
+    virtual void Alert(const std::string& message) = 0;
+
+    // Puts up a confirm with the given message, and returns true if the user
+    // presses OK, or false if they press cancel.
+    virtual bool Confirm(const std::string& message) = 0;
+
+    // Puts up a prompt with the given message and default answer and returns
+    // the answer.
+    virtual std::string Prompt(const std::string& question,
+                               const std::string& default_answer) = 0;
+
+    // Returns the url of the pdf.
+    virtual std::string GetURL() = 0;
+
+    // Send an email.
+    virtual void Email(const std::string& to,
+                       const std::string& cc,
+                       const std::string& bcc,
+                       const std::string& subject,
+                       const std::string& body) = 0;
+    // Put up the print dialog.
+    virtual void Print() = 0;
+
+    // Submit the data using HTTP POST.
+    virtual void SubmitForm(const std::string& url,
+                            const void* data,
+                            int length) = 0;
+
+    // Pops up a file selection dialog and returns the result.
+    virtual std::string ShowFileSelectionDialog() = 0;
+
+    // Creates and returns new URL loader for partial document requests.
+    virtual pp::URLLoader CreateURLLoader() = 0;
+
+    // Calls the client's OnCallback() function in delay_in_ms with the given
+    // id.
+    virtual void ScheduleCallback(int id, int delay_in_ms) = 0;
+
+    // Searches the given string for "term" and returns the results.  Unicode-
+    // aware.
+    struct SearchStringResult {
+      int start_index;
+      int length;
+    };
+    virtual void SearchString(const base::char16* string,
+                              const base::char16* term,
+                              bool case_sensitive,
+                              std::vector<SearchStringResult>* results) = 0;
+
+    // Notifies the client that the engine has painted a page from the document.
+    virtual void DocumentPaintOccurred() = 0;
+
+    // Notifies the client that the document has finished loading.
+    virtual void DocumentLoadComplete(int page_count) = 0;
+
+    // Notifies the client that the document has failed to load.
+    virtual void DocumentLoadFailed() = 0;
+
+    virtual pp::Instance* GetPluginInstance() = 0;
+
+    // Notifies that an unsupported feature in the PDF was encountered.
+    virtual void DocumentHasUnsupportedFeature(const std::string& feature) = 0;
+
+    // Notifies the client about document load progress.
+    virtual void DocumentLoadProgress(uint32 available, uint32 doc_size) = 0;
+
+    // Notifies the client about focus changes for form text fields.
+    virtual void FormTextFieldFocusChange(bool in_focus) = 0;
+
+    // Returns true if the plugin has been opened within print preview.
+    virtual bool IsPrintPreview() = 0;
+  };
+
+  // Factory method to create an instance of the PDF Engine.
+  static PDFEngine* Create(Client* client);
+
+  virtual ~PDFEngine() {}
+  // Most of these functions are similar to the Pepper functions of the same
+  // name, so not repeating the description here unless it's different.
+  virtual bool New(const char* url) = 0;
+  virtual bool New(const char* url,
+                   const char* headers) = 0;
+  virtual void PageOffsetUpdated(const pp::Point& page_offset) = 0;
+  virtual void PluginSizeUpdated(const pp::Size& size) = 0;
+  virtual void ScrolledToXPosition(int position) = 0;
+  virtual void ScrolledToYPosition(int position) = 0;
+  // Paint is called a series of times. Before these n calls are made, PrePaint
+  // is called once. After Paint is called n times, PostPaint is called once.
+  virtual void PrePaint() = 0;
+  virtual void Paint(const pp::Rect& rect,
+                     pp::ImageData* image_data,
+                     std::vector<pp::Rect>* ready,
+                     std::vector<pp::Rect>* pending) = 0;
+  virtual void PostPaint() = 0;
+  virtual bool HandleDocumentLoad(const pp::URLLoader& loader) = 0;
+  virtual bool HandleEvent(const pp::InputEvent& event) = 0;
+  virtual uint32_t QuerySupportedPrintOutputFormats() = 0;
+  virtual void PrintBegin() = 0;
+  virtual pp::Resource PrintPages(
+      const PP_PrintPageNumberRange_Dev* page_ranges,
+      uint32_t page_range_count,
+      const PP_PrintSettings_Dev& print_settings) = 0;
+  virtual void PrintEnd() = 0;
+  virtual void StartFind(const char* text, bool case_sensitive) = 0;
+  virtual bool SelectFindResult(bool forward) = 0;
+  virtual void StopFind() = 0;
+  virtual void ZoomUpdated(double new_zoom_level) = 0;
+  virtual void RotateClockwise() = 0;
+  virtual void RotateCounterclockwise() = 0;
+  virtual std::string GetSelectedText() = 0;
+  virtual std::string GetLinkAtPosition(const pp::Point& point) = 0;
+  virtual bool IsSelecting() = 0;
+  // Checks the permissions associated with this document.
+  virtual bool HasPermission(DocumentPermission permission) const = 0;
+  virtual void SelectAll() = 0;
+  // Gets the number of pages in the document.
+  virtual int GetNumberOfPages() = 0;
+  // Gets the 0-based page number of |destination|, or -1 if it does not exist.
+  virtual int GetNamedDestinationPage(const std::string& destination) = 0;
+  // Gets the index of the first visible page, or -1 if none are visible.
+  virtual int GetFirstVisiblePage() = 0;
+  // Gets the index of the most visible page, or -1 if none are visible.
+  virtual int GetMostVisiblePage() = 0;
+  // Gets the rectangle of the page including shadow.
+  virtual pp::Rect GetPageRect(int index) = 0;
+  // Gets the rectangle of the page excluding any additional areas.
+  virtual pp::Rect GetPageContentsRect(int index) = 0;
+  // Gets the offset of the vertical scrollbar from the top in document
+  // coordinates.
+  virtual int GetVerticalScrollbarYPosition() = 0;
+  // Paints page thumbnail to the ImageData.
+  virtual void PaintThumbnail(pp::ImageData* image_data, int index) = 0;
+  // Set color / grayscale rendering modes.
+  virtual void SetGrayscale(bool grayscale) = 0;
+  // Callback for timer that's set with ScheduleCallback().
+  virtual void OnCallback(int id) = 0;
+  // Gets the JSON representation of the PDF file
+  virtual std::string GetPageAsJSON(int index) = 0;
+  // Gets the PDF document's print scaling preference. True if the document can
+  // be scaled to fit.
+  virtual bool GetPrintScaling() = 0;
+
+  // Append blank pages to make a 1-page document to a |num_pages| document.
+  // Always retain the first page data.
+  virtual void AppendBlankPages(int num_pages) = 0;
+  // Append the first page of the document loaded with the |engine| to this
+  // document at page |index|.
+  virtual void AppendPage(PDFEngine* engine, int index) = 0;
+
+  // Allow client to query and reset scroll positions in document coordinates.
+  // Note that this is meant for cases where the device scale factor changes,
+  // and not for general scrolling - the engine will not repaint due to this.
+  virtual pp::Point GetScrollPosition() = 0;
+  virtual void SetScrollPosition(const pp::Point& position) = 0;
+
+  virtual bool IsProgressiveLoad() = 0;
+};
+
+// Interface for exports that wrap the PDF engine.
+class PDFEngineExports {
+ public:
+  struct RenderingSettings {
+   RenderingSettings(int dpi_x,
+                     int dpi_y,
+                     const pp::Rect& bounds,
+                     bool fit_to_bounds,
+                     bool stretch_to_bounds,
+                     bool keep_aspect_ratio,
+                     bool center_in_bounds,
+                     bool autorotate)
+      : dpi_x(dpi_x), dpi_y(dpi_y), bounds(bounds),
+        fit_to_bounds(fit_to_bounds), stretch_to_bounds(stretch_to_bounds),
+        keep_aspect_ratio(keep_aspect_ratio),
+        center_in_bounds(center_in_bounds), autorotate(autorotate) {
+    }
+    int dpi_x;
+    int dpi_y;
+    pp::Rect bounds;
+    bool fit_to_bounds;
+    bool stretch_to_bounds;
+    bool keep_aspect_ratio;
+    bool center_in_bounds;
+    bool autorotate;
+  };
+
+  PDFEngineExports() {}
+  virtual ~PDFEngineExports() {}
+  static PDFEngineExports* Create();
+#if defined(OS_WIN)
+  // See the definition of RenderPDFPageToDC in pdf.cc for details.
+  virtual bool RenderPDFPageToDC(const void* pdf_buffer,
+                                 int buffer_size,
+                                 int page_number,
+                                 const RenderingSettings& settings,
+                                 HDC dc) = 0;
+#endif  // OS_WIN
+  // See the definition of RenderPDFPageToBitmap in pdf.cc for details.
+  virtual bool RenderPDFPageToBitmap(const void* pdf_buffer,
+                                     int pdf_buffer_size,
+                                     int page_number,
+                                     const RenderingSettings& settings,
+                                     void* bitmap_buffer) = 0;
+
+  virtual bool GetPDFDocInfo(const void* pdf_buffer,
+                             int buffer_size,
+                             int* page_count,
+                             double* max_page_width) = 0;
+
+  // See the definition of GetPDFPageSizeByIndex in pdf.cc for details.
+  virtual bool GetPDFPageSizeByIndex(const void* pdf_buffer,
+                                     int pdf_buffer_size, int page_number,
+                                     double* width, double* height) = 0;
+};
+
+}  // namespace chrome_pdf
+
+#endif  // PDF_PDF_ENGINE_H_
diff --git a/xfa_test/pdf/pdfium/pdfium_assert_matching_enums.cc b/xfa_test/pdf/pdfium/pdfium_assert_matching_enums.cc
new file mode 100644
index 0000000000..ef140cf7c9
--- /dev/null
+++ b/xfa_test/pdf/pdfium/pdfium_assert_matching_enums.cc
@@ -0,0 +1,207 @@
+// Copyright (c) 2010 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "base/basictypes.h"
+#include "ppapi/c/pp_input_event.h"
+#include "ppapi/c/private/ppb_pdf.h"
+#include "third_party/pdfium/fpdfsdk/include/fpdf_fwlevent.h"
+#include "third_party/pdfium/fpdfsdk/include/fpdf_sysfontinfo.h"
+#include "ui/events/keycodes/keyboard_codes.h"
+
+#define COMPILE_ASSERT_MATCH(np_name, pdfium_name) \
+    COMPILE_ASSERT(int(np_name) == int(pdfium_name), mismatching_enums)
+
+COMPILE_ASSERT_MATCH(PP_INPUTEVENT_MODIFIER_SHIFTKEY, FWL_EVENTFLAG_ShiftKey);
+COMPILE_ASSERT_MATCH(PP_INPUTEVENT_MODIFIER_CONTROLKEY,
+                     FWL_EVENTFLAG_ControlKey);
+COMPILE_ASSERT_MATCH(PP_INPUTEVENT_MODIFIER_ALTKEY, FWL_EVENTFLAG_AltKey);
+COMPILE_ASSERT_MATCH(PP_INPUTEVENT_MODIFIER_METAKEY, FWL_EVENTFLAG_MetaKey);
+COMPILE_ASSERT_MATCH(PP_INPUTEVENT_MODIFIER_ISKEYPAD, FWL_EVENTFLAG_KeyPad);
+COMPILE_ASSERT_MATCH(PP_INPUTEVENT_MODIFIER_ISAUTOREPEAT,
+                     FWL_EVENTFLAG_AutoRepeat);
+COMPILE_ASSERT_MATCH(PP_INPUTEVENT_MODIFIER_LEFTBUTTONDOWN,
+                     FWL_EVENTFLAG_LeftButtonDown);
+COMPILE_ASSERT_MATCH(PP_INPUTEVENT_MODIFIER_MIDDLEBUTTONDOWN,
+                     FWL_EVENTFLAG_MiddleButtonDown);
+COMPILE_ASSERT_MATCH(PP_INPUTEVENT_MODIFIER_RIGHTBUTTONDOWN,
+                     FWL_EVENTFLAG_RightButtonDown);
+
+COMPILE_ASSERT_MATCH(ui::VKEY_BACK, FWL_VKEY_Back);
+COMPILE_ASSERT_MATCH(ui::VKEY_TAB, FWL_VKEY_Tab);
+COMPILE_ASSERT_MATCH(ui::VKEY_CLEAR, FWL_VKEY_Clear);
+COMPILE_ASSERT_MATCH(ui::VKEY_RETURN, FWL_VKEY_Return);
+COMPILE_ASSERT_MATCH(ui::VKEY_SHIFT, FWL_VKEY_Shift);
+COMPILE_ASSERT_MATCH(ui::VKEY_CONTROL, FWL_VKEY_Control);
+COMPILE_ASSERT_MATCH(ui::VKEY_MENU, FWL_VKEY_Menu);
+COMPILE_ASSERT_MATCH(ui::VKEY_PAUSE, FWL_VKEY_Pause);
+COMPILE_ASSERT_MATCH(ui::VKEY_CAPITAL, FWL_VKEY_Capital);
+COMPILE_ASSERT_MATCH(ui::VKEY_KANA, FWL_VKEY_Kana);
+COMPILE_ASSERT_MATCH(ui::VKEY_HANGUL, FWL_VKEY_Hangul);
+COMPILE_ASSERT_MATCH(ui::VKEY_JUNJA, FWL_VKEY_Junja);
+COMPILE_ASSERT_MATCH(ui::VKEY_FINAL, FWL_VKEY_Final);
+COMPILE_ASSERT_MATCH(ui::VKEY_HANJA, FWL_VKEY_Hanja);
+COMPILE_ASSERT_MATCH(ui::VKEY_KANJI, FWL_VKEY_Kanji);
+COMPILE_ASSERT_MATCH(ui::VKEY_ESCAPE, FWL_VKEY_Escape);
+COMPILE_ASSERT_MATCH(ui::VKEY_CONVERT, FWL_VKEY_Convert);
+COMPILE_ASSERT_MATCH(ui::VKEY_NONCONVERT, FWL_VKEY_NonConvert);
+COMPILE_ASSERT_MATCH(ui::VKEY_ACCEPT, FWL_VKEY_Accept);
+COMPILE_ASSERT_MATCH(ui::VKEY_MODECHANGE, FWL_VKEY_ModeChange);
+COMPILE_ASSERT_MATCH(ui::VKEY_SPACE, FWL_VKEY_Space);
+COMPILE_ASSERT_MATCH(ui::VKEY_PRIOR, FWL_VKEY_Prior);
+COMPILE_ASSERT_MATCH(ui::VKEY_NEXT, FWL_VKEY_Next);
+COMPILE_ASSERT_MATCH(ui::VKEY_END, FWL_VKEY_End);
+COMPILE_ASSERT_MATCH(ui::VKEY_HOME, FWL_VKEY_Home);
+COMPILE_ASSERT_MATCH(ui::VKEY_LEFT, FWL_VKEY_Left);
+COMPILE_ASSERT_MATCH(ui::VKEY_UP, FWL_VKEY_Up);
+COMPILE_ASSERT_MATCH(ui::VKEY_RIGHT, FWL_VKEY_Right);
+COMPILE_ASSERT_MATCH(ui::VKEY_DOWN, FWL_VKEY_Down);
+COMPILE_ASSERT_MATCH(ui::VKEY_SELECT, FWL_VKEY_Select);
+COMPILE_ASSERT_MATCH(ui::VKEY_PRINT, FWL_VKEY_Print);
+COMPILE_ASSERT_MATCH(ui::VKEY_EXECUTE, FWL_VKEY_Execute);
+COMPILE_ASSERT_MATCH(ui::VKEY_SNAPSHOT, FWL_VKEY_Snapshot);
+COMPILE_ASSERT_MATCH(ui::VKEY_INSERT, FWL_VKEY_Insert);
+COMPILE_ASSERT_MATCH(ui::VKEY_DELETE, FWL_VKEY_Delete);
+COMPILE_ASSERT_MATCH(ui::VKEY_HELP, FWL_VKEY_Help);
+COMPILE_ASSERT_MATCH(ui::VKEY_0, FWL_VKEY_0);
+COMPILE_ASSERT_MATCH(ui::VKEY_1, FWL_VKEY_1);
+COMPILE_ASSERT_MATCH(ui::VKEY_2, FWL_VKEY_2);
+COMPILE_ASSERT_MATCH(ui::VKEY_3, FWL_VKEY_3);
+COMPILE_ASSERT_MATCH(ui::VKEY_4, FWL_VKEY_4);
+COMPILE_ASSERT_MATCH(ui::VKEY_5, FWL_VKEY_5);
+COMPILE_ASSERT_MATCH(ui::VKEY_6, FWL_VKEY_6);
+COMPILE_ASSERT_MATCH(ui::VKEY_7, FWL_VKEY_7);
+COMPILE_ASSERT_MATCH(ui::VKEY_8, FWL_VKEY_8);
+COMPILE_ASSERT_MATCH(ui::VKEY_9, FWL_VKEY_9);
+COMPILE_ASSERT_MATCH(ui::VKEY_A, FWL_VKEY_A);
+COMPILE_ASSERT_MATCH(ui::VKEY_B, FWL_VKEY_B);
+COMPILE_ASSERT_MATCH(ui::VKEY_C, FWL_VKEY_C);
+COMPILE_ASSERT_MATCH(ui::VKEY_D, FWL_VKEY_D);
+COMPILE_ASSERT_MATCH(ui::VKEY_E, FWL_VKEY_E);
+COMPILE_ASSERT_MATCH(ui::VKEY_F, FWL_VKEY_F);
+COMPILE_ASSERT_MATCH(ui::VKEY_G, FWL_VKEY_G);
+COMPILE_ASSERT_MATCH(ui::VKEY_H, FWL_VKEY_H);
+COMPILE_ASSERT_MATCH(ui::VKEY_I, FWL_VKEY_I);
+COMPILE_ASSERT_MATCH(ui::VKEY_J, FWL_VKEY_J);
+COMPILE_ASSERT_MATCH(ui::VKEY_K, FWL_VKEY_K);
+COMPILE_ASSERT_MATCH(ui::VKEY_L, FWL_VKEY_L);
+COMPILE_ASSERT_MATCH(ui::VKEY_M, FWL_VKEY_M);
+COMPILE_ASSERT_MATCH(ui::VKEY_N, FWL_VKEY_N);
+COMPILE_ASSERT_MATCH(ui::VKEY_O, FWL_VKEY_O);
+COMPILE_ASSERT_MATCH(ui::VKEY_P, FWL_VKEY_P);
+COMPILE_ASSERT_MATCH(ui::VKEY_Q, FWL_VKEY_Q);
+COMPILE_ASSERT_MATCH(ui::VKEY_R, FWL_VKEY_R);
+COMPILE_ASSERT_MATCH(ui::VKEY_S, FWL_VKEY_S);
+COMPILE_ASSERT_MATCH(ui::VKEY_T, FWL_VKEY_T);
+COMPILE_ASSERT_MATCH(ui::VKEY_U, FWL_VKEY_U);
+COMPILE_ASSERT_MATCH(ui::VKEY_V, FWL_VKEY_V);
+COMPILE_ASSERT_MATCH(ui::VKEY_W, FWL_VKEY_W);
+COMPILE_ASSERT_MATCH(ui::VKEY_X, FWL_VKEY_X);
+COMPILE_ASSERT_MATCH(ui::VKEY_Y, FWL_VKEY_Y);
+COMPILE_ASSERT_MATCH(ui::VKEY_Z, FWL_VKEY_Z);
+COMPILE_ASSERT_MATCH(ui::VKEY_LWIN, FWL_VKEY_LWin);
+COMPILE_ASSERT_MATCH(ui::VKEY_COMMAND, FWL_VKEY_Command);
+COMPILE_ASSERT_MATCH(ui::VKEY_RWIN, FWL_VKEY_RWin);
+COMPILE_ASSERT_MATCH(ui::VKEY_APPS, FWL_VKEY_Apps);
+COMPILE_ASSERT_MATCH(ui::VKEY_SLEEP, FWL_VKEY_Sleep);
+COMPILE_ASSERT_MATCH(ui::VKEY_NUMPAD0, FWL_VKEY_NumPad0);
+COMPILE_ASSERT_MATCH(ui::VKEY_NUMPAD1, FWL_VKEY_NumPad1);
+COMPILE_ASSERT_MATCH(ui::VKEY_NUMPAD2, FWL_VKEY_NumPad2);
+COMPILE_ASSERT_MATCH(ui::VKEY_NUMPAD3, FWL_VKEY_NumPad3);
+COMPILE_ASSERT_MATCH(ui::VKEY_NUMPAD4, FWL_VKEY_NumPad4);
+COMPILE_ASSERT_MATCH(ui::VKEY_NUMPAD5, FWL_VKEY_NumPad5);
+COMPILE_ASSERT_MATCH(ui::VKEY_NUMPAD6, FWL_VKEY_NumPad6);
+COMPILE_ASSERT_MATCH(ui::VKEY_NUMPAD7, FWL_VKEY_NumPad7);
+COMPILE_ASSERT_MATCH(ui::VKEY_NUMPAD8, FWL_VKEY_NumPad8);
+COMPILE_ASSERT_MATCH(ui::VKEY_NUMPAD9, FWL_VKEY_NumPad9);
+COMPILE_ASSERT_MATCH(ui::VKEY_MULTIPLY, FWL_VKEY_Multiply);
+COMPILE_ASSERT_MATCH(ui::VKEY_ADD, FWL_VKEY_Add);
+COMPILE_ASSERT_MATCH(ui::VKEY_SEPARATOR, FWL_VKEY_Separator);
+COMPILE_ASSERT_MATCH(ui::VKEY_SUBTRACT, FWL_VKEY_Subtract);
+COMPILE_ASSERT_MATCH(ui::VKEY_DECIMAL, FWL_VKEY_Decimal);
+COMPILE_ASSERT_MATCH(ui::VKEY_DIVIDE, FWL_VKEY_Divide);
+COMPILE_ASSERT_MATCH(ui::VKEY_F1, FWL_VKEY_F1);
+COMPILE_ASSERT_MATCH(ui::VKEY_F2, FWL_VKEY_F2);
+COMPILE_ASSERT_MATCH(ui::VKEY_F3, FWL_VKEY_F3);
+COMPILE_ASSERT_MATCH(ui::VKEY_F4, FWL_VKEY_F4);
+COMPILE_ASSERT_MATCH(ui::VKEY_F5, FWL_VKEY_F5);
+COMPILE_ASSERT_MATCH(ui::VKEY_F6, FWL_VKEY_F6);
+COMPILE_ASSERT_MATCH(ui::VKEY_F7, FWL_VKEY_F7);
+COMPILE_ASSERT_MATCH(ui::VKEY_F8, FWL_VKEY_F8);
+COMPILE_ASSERT_MATCH(ui::VKEY_F9, FWL_VKEY_F9);
+COMPILE_ASSERT_MATCH(ui::VKEY_F10, FWL_VKEY_F10);
+COMPILE_ASSERT_MATCH(ui::VKEY_F11, FWL_VKEY_F11);
+COMPILE_ASSERT_MATCH(ui::VKEY_F12, FWL_VKEY_F12);
+COMPILE_ASSERT_MATCH(ui::VKEY_F13, FWL_VKEY_F13);
+COMPILE_ASSERT_MATCH(ui::VKEY_F14, FWL_VKEY_F14);
+COMPILE_ASSERT_MATCH(ui::VKEY_F15, FWL_VKEY_F15);
+COMPILE_ASSERT_MATCH(ui::VKEY_F16, FWL_VKEY_F16);
+COMPILE_ASSERT_MATCH(ui::VKEY_F17, FWL_VKEY_F17);
+COMPILE_ASSERT_MATCH(ui::VKEY_F18, FWL_VKEY_F18);
+COMPILE_ASSERT_MATCH(ui::VKEY_F19, FWL_VKEY_F19);
+COMPILE_ASSERT_MATCH(ui::VKEY_F20, FWL_VKEY_F20);
+COMPILE_ASSERT_MATCH(ui::VKEY_F21, FWL_VKEY_F21);
+COMPILE_ASSERT_MATCH(ui::VKEY_F22, FWL_VKEY_F22);
+COMPILE_ASSERT_MATCH(ui::VKEY_F23, FWL_VKEY_F23);
+COMPILE_ASSERT_MATCH(ui::VKEY_F24, FWL_VKEY_F24);
+COMPILE_ASSERT_MATCH(ui::VKEY_NUMLOCK, FWL_VKEY_NunLock);
+COMPILE_ASSERT_MATCH(ui::VKEY_SCROLL, FWL_VKEY_Scroll);
+COMPILE_ASSERT_MATCH(ui::VKEY_LSHIFT, FWL_VKEY_LShift);
+COMPILE_ASSERT_MATCH(ui::VKEY_RSHIFT, FWL_VKEY_RShift);
+COMPILE_ASSERT_MATCH(ui::VKEY_LCONTROL, FWL_VKEY_LControl);
+COMPILE_ASSERT_MATCH(ui::VKEY_RCONTROL, FWL_VKEY_RControl);
+COMPILE_ASSERT_MATCH(ui::VKEY_LMENU, FWL_VKEY_LMenu);
+COMPILE_ASSERT_MATCH(ui::VKEY_RMENU, FWL_VKEY_RMenu);
+COMPILE_ASSERT_MATCH(ui::VKEY_BROWSER_BACK, FWL_VKEY_BROWSER_Back);
+COMPILE_ASSERT_MATCH(ui::VKEY_BROWSER_FORWARD, FWL_VKEY_BROWSER_Forward);
+COMPILE_ASSERT_MATCH(ui::VKEY_BROWSER_REFRESH, FWL_VKEY_BROWSER_Refresh);
+COMPILE_ASSERT_MATCH(ui::VKEY_BROWSER_STOP, FWL_VKEY_BROWSER_Stop);
+COMPILE_ASSERT_MATCH(ui::VKEY_BROWSER_SEARCH, FWL_VKEY_BROWSER_Search);
+COMPILE_ASSERT_MATCH(ui::VKEY_BROWSER_FAVORITES, FWL_VKEY_BROWSER_Favorites);
+COMPILE_ASSERT_MATCH(ui::VKEY_BROWSER_HOME, FWL_VKEY_BROWSER_Home);
+COMPILE_ASSERT_MATCH(ui::VKEY_VOLUME_MUTE, FWL_VKEY_VOLUME_Mute);
+COMPILE_ASSERT_MATCH(ui::VKEY_VOLUME_DOWN, FWL_VKEY_VOLUME_Down);
+COMPILE_ASSERT_MATCH(ui::VKEY_VOLUME_UP, FWL_VKEY_VOLUME_Up);
+COMPILE_ASSERT_MATCH(ui::VKEY_MEDIA_NEXT_TRACK, FWL_VKEY_MEDIA_NEXT_Track);
+COMPILE_ASSERT_MATCH(ui::VKEY_MEDIA_PREV_TRACK, FWL_VKEY_MEDIA_PREV_Track);
+COMPILE_ASSERT_MATCH(ui::VKEY_MEDIA_STOP, FWL_VKEY_MEDIA_Stop);
+COMPILE_ASSERT_MATCH(ui::VKEY_MEDIA_PLAY_PAUSE, FWL_VKEY_MEDIA_PLAY_Pause);
+COMPILE_ASSERT_MATCH(ui::VKEY_MEDIA_LAUNCH_MAIL, FWL_VKEY_MEDIA_LAUNCH_Mail);
+COMPILE_ASSERT_MATCH(ui::VKEY_MEDIA_LAUNCH_MEDIA_SELECT,
+                     FWL_VKEY_MEDIA_LAUNCH_MEDIA_Select);
+COMPILE_ASSERT_MATCH(ui::VKEY_MEDIA_LAUNCH_APP1, FWL_VKEY_MEDIA_LAUNCH_APP1);
+COMPILE_ASSERT_MATCH(ui::VKEY_MEDIA_LAUNCH_APP2, FWL_VKEY_MEDIA_LAUNCH_APP2);
+COMPILE_ASSERT_MATCH(ui::VKEY_OEM_1, FWL_VKEY_OEM_1);
+COMPILE_ASSERT_MATCH(ui::VKEY_OEM_PLUS, FWL_VKEY_OEM_Plus);
+COMPILE_ASSERT_MATCH(ui::VKEY_OEM_COMMA, FWL_VKEY_OEM_Comma);
+COMPILE_ASSERT_MATCH(ui::VKEY_OEM_MINUS, FWL_VKEY_OEM_Minus);
+COMPILE_ASSERT_MATCH(ui::VKEY_OEM_PERIOD, FWL_VKEY_OEM_Period);
+COMPILE_ASSERT_MATCH(ui::VKEY_OEM_2, FWL_VKEY_OEM_2);
+COMPILE_ASSERT_MATCH(ui::VKEY_OEM_3, FWL_VKEY_OEM_3);
+COMPILE_ASSERT_MATCH(ui::VKEY_OEM_4, FWL_VKEY_OEM_4);
+COMPILE_ASSERT_MATCH(ui::VKEY_OEM_5, FWL_VKEY_OEM_5);
+COMPILE_ASSERT_MATCH(ui::VKEY_OEM_6, FWL_VKEY_OEM_6);
+COMPILE_ASSERT_MATCH(ui::VKEY_OEM_7, FWL_VKEY_OEM_7);
+COMPILE_ASSERT_MATCH(ui::VKEY_OEM_8, FWL_VKEY_OEM_8);
+COMPILE_ASSERT_MATCH(ui::VKEY_OEM_102, FWL_VKEY_OEM_102);
+COMPILE_ASSERT_MATCH(ui::VKEY_PROCESSKEY, FWL_VKEY_ProcessKey);
+COMPILE_ASSERT_MATCH(ui::VKEY_PACKET, FWL_VKEY_Packet);
+COMPILE_ASSERT_MATCH(ui::VKEY_ATTN, FWL_VKEY_Attn);
+COMPILE_ASSERT_MATCH(ui::VKEY_CRSEL, FWL_VKEY_Crsel);
+COMPILE_ASSERT_MATCH(ui::VKEY_EXSEL, FWL_VKEY_Exsel);
+COMPILE_ASSERT_MATCH(ui::VKEY_EREOF, FWL_VKEY_Ereof);
+COMPILE_ASSERT_MATCH(ui::VKEY_PLAY, FWL_VKEY_Play);
+COMPILE_ASSERT_MATCH(ui::VKEY_ZOOM, FWL_VKEY_Zoom);
+COMPILE_ASSERT_MATCH(ui::VKEY_NONAME, FWL_VKEY_NoName);
+COMPILE_ASSERT_MATCH(ui::VKEY_PA1, FWL_VKEY_PA1);
+COMPILE_ASSERT_MATCH(ui::VKEY_OEM_CLEAR, FWL_VKEY_OEM_Clear);
+COMPILE_ASSERT_MATCH(ui::VKEY_UNKNOWN, FWL_VKEY_Unknown);
+
+COMPILE_ASSERT_MATCH(PP_PRIVATEFONTCHARSET_ANSI, FXFONT_ANSI_CHARSET);
+COMPILE_ASSERT_MATCH(PP_PRIVATEFONTCHARSET_DEFAULT, FXFONT_DEFAULT_CHARSET);
+COMPILE_ASSERT_MATCH(PP_PRIVATEFONTCHARSET_SYMBOL, FXFONT_SYMBOL_CHARSET);
+COMPILE_ASSERT_MATCH(PP_PRIVATEFONTCHARSET_SHIFTJIS, FXFONT_SHIFTJIS_CHARSET);
+COMPILE_ASSERT_MATCH(PP_PRIVATEFONTCHARSET_HANGUL, FXFONT_HANGEUL_CHARSET);
+COMPILE_ASSERT_MATCH(PP_PRIVATEFONTCHARSET_GB2312, FXFONT_GB2312_CHARSET);
+COMPILE_ASSERT_MATCH(PP_PRIVATEFONTCHARSET_CHINESEBIG5,
+                     FXFONT_CHINESEBIG5_CHARSET);
diff --git a/xfa_test/pdf/pdfium/pdfium_engine.cc b/xfa_test/pdf/pdfium/pdfium_engine.cc
new file mode 100644
index 0000000000..44e7052bf3
--- /dev/null
+++ b/xfa_test/pdf/pdfium/pdfium_engine.cc
@@ -0,0 +1,3884 @@
+// Copyright (c) 2012 The Chromium Authors. All rights reserved.

+// Use of this source code is governed by a BSD-style license that can be

+// found in the LICENSE file.

+

+#include "pdf/pdfium/pdfium_engine.h"

+

+#include <math.h>

+

+#include "base/json/json_writer.h"

+#include "base/logging.h"

+#include "base/memory/scoped_ptr.h"

+#include "base/stl_util.h"

+#include "base/strings/string_number_conversions.h"

+#include "base/strings/string_piece.h"

+#include "base/strings/string_util.h"

+#include "base/strings/utf_string_conversions.h"

+#include "base/values.h"

+#include "pdf/draw_utils.h"

+#include "pdf/pdfium/pdfium_mem_buffer_file_read.h"

+#include "pdf/pdfium/pdfium_mem_buffer_file_write.h"

+#include "ppapi/c/pp_errors.h"

+#include "ppapi/c/pp_input_event.h"

+#include "ppapi/c/ppb_core.h"

+#include "ppapi/c/private/ppb_pdf.h"

+#include "ppapi/cpp/dev/memory_dev.h"

+#include "ppapi/cpp/input_event.h"

+#include "ppapi/cpp/instance.h"

+#include "ppapi/cpp/module.h"

+#include "ppapi/cpp/private/pdf.h"

+#include "ppapi/cpp/trusted/browser_font_trusted.h"

+#include "ppapi/cpp/url_response_info.h"

+#include "ppapi/cpp/var.h"

+#include "third_party/pdfium/fpdfsdk/include/fpdf_ext.h"

+#include "third_party/pdfium/fpdfsdk/include/fpdf_flatten.h"

+#include "third_party/pdfium/fpdfsdk/include/fpdf_searchex.h"

+#include "third_party/pdfium/fpdfsdk/include/fpdf_sysfontinfo.h"

+#include "third_party/pdfium/fpdfsdk/include/fpdf_transformpage.h"

+#include "third_party/pdfium/fpdfsdk/include/fpdfedit.h"

+#include "third_party/pdfium/fpdfsdk/include/fpdfoom.h"

+#include "third_party/pdfium/fpdfsdk/include/fpdfppo.h"

+#include "third_party/pdfium/fpdfsdk/include/fpdfsave.h"

+#include "third_party/pdfium/fpdfsdk/include/pdfwindow/PDFWindow.h"

+#include "third_party/pdfium/fpdfsdk/include/pdfwindow/PWL_FontMap.h"

+#include "ui/events/keycodes/keyboard_codes.h"

+

+namespace chrome_pdf {

+

+namespace {

+

+#define kPageShadowTop    3

+#define kPageShadowBottom 7

+#define kPageShadowLeft   5

+#define kPageShadowRight  5

+

+#define kPageSeparatorThickness 4

+#define kHighlightColorR 153

+#define kHighlightColorG 193

+#define kHighlightColorB 218

+

+const uint32 kPendingPageColor = 0xFFEEEEEE;

+

+#define kFormHighlightColor 0xFFE4DD

+#define kFormHighlightAlpha 100

+

+#define kMaxPasswordTries 3

+

+// See Table 3.20 in

+// http://www.adobe.com/devnet/acrobat/pdfs/pdf_reference_1-7.pdf

+#define kPDFPermissionPrintLowQualityMask  1 << 2

+#define kPDFPermissionPrintHighQualityMask 1 << 11

+#define kPDFPermissionCopyMask             1 << 4

+#define kPDFPermissionCopyAccessibleMask   1 << 9

+

+#define kLoadingTextVerticalOffset 50

+

+// The maximum amount of time we'll spend doing a paint before we give back

+// control of the thread.

+#define kMaxProgressivePaintTimeMs 50

+

+// The maximum amount of time we'll spend doing the first paint. This is less

+// than the above to keep things smooth if the user is scrolling quickly. We

+// try painting a little because with accelerated compositing, we get flushes

+// only every 16 ms. If we were to wait until the next flush to paint the rest

+// of the pdf, we would never get to draw the pdf and would only draw the

+// scrollbars. This value is picked to give enough time for gpu related code to

+// do its thing and still fit within the timelimit for 60Hz. For the

+// non-composited case, this doesn't make things worse since we're still

+// painting the scrollbars > 60 Hz.

+#define kMaxInitialProgressivePaintTimeMs 10

+

+// Copied from printing/units.cc because we don't want to depend on printing

+// since it brings in libpng which causes duplicate symbols with PDFium.

+const int kPointsPerInch = 72;

+const int kPixelsPerInch = 96;

+

+struct ClipBox {

+  float left;

+  float right;

+  float top;

+  float bottom;

+};

+

+int ConvertUnit(int value, int old_unit, int new_unit) {

+  // With integer arithmetic, to divide a value with correct rounding, you need

+  // to add half of the divisor value to the dividend value. You need to do the

+  // reverse with negative number.

+  if (value >= 0) {

+    return ((value * new_unit) + (old_unit / 2)) / old_unit;

+  } else {

+    return ((value * new_unit) - (old_unit / 2)) / old_unit;

+  }

+}

+

+std::vector<uint32_t> GetPageNumbersFromPrintPageNumberRange(

+    const PP_PrintPageNumberRange_Dev* page_ranges,

+    uint32_t page_range_count) {

+  std::vector<uint32_t> page_numbers;

+  for (uint32_t index = 0; index < page_range_count; ++index) {

+    for (uint32_t page_number = page_ranges[index].first_page_number;

+         page_number <= page_ranges[index].last_page_number; ++page_number) {

+      page_numbers.push_back(page_number);

+    }

+  }

+  return page_numbers;

+}

+

+#if defined(OS_LINUX)

+

+PP_Instance g_last_instance_id;

+

+struct PDFFontSubstitution {

+  const char* pdf_name;

+  const char* face;

+  bool bold;

+  bool italic;

+};

+

+PP_BrowserFont_Trusted_Weight WeightToBrowserFontTrustedWeight(int weight) {

+  COMPILE_ASSERT(PP_BROWSERFONT_TRUSTED_WEIGHT_100 == 0,

+                 PP_BrowserFont_Trusted_Weight_Min);

+  COMPILE_ASSERT(PP_BROWSERFONT_TRUSTED_WEIGHT_900 == 8,

+                 PP_BrowserFont_Trusted_Weight_Max);

+  const int kMinimumWeight = 100;

+  const int kMaximumWeight = 900;

+  int normalized_weight =

+      std::min(std::max(weight, kMinimumWeight), kMaximumWeight);

+  normalized_weight = (normalized_weight / 100) - 1;

+  return static_cast<PP_BrowserFont_Trusted_Weight>(normalized_weight);

+}

+

+// This list is for CPWL_FontMap::GetDefaultFontByCharset().

+// We pretend to have these font natively and let the browser (or underlying

+// fontconfig) to pick the proper font on the system.

+void EnumFonts(struct _FPDF_SYSFONTINFO* sysfontinfo, void* mapper) {

+  FPDF_AddInstalledFont(mapper, "Arial", FXFONT_DEFAULT_CHARSET);

+

+  int i = 0;

+  while (CPWL_FontMap::defaultTTFMap[i].charset != -1) {

+    FPDF_AddInstalledFont(mapper,

+                          CPWL_FontMap::defaultTTFMap[i].fontname,

+                          CPWL_FontMap::defaultTTFMap[i].charset);

+    ++i;

+  }

+}

+

+const PDFFontSubstitution PDFFontSubstitutions[] = {

+    {"Courier", "Courier New", false, false},

+    {"Courier-Bold", "Courier New", true, false},

+    {"Courier-BoldOblique", "Courier New", true, true},

+    {"Courier-Oblique", "Courier New", false, true},

+    {"Helvetica", "Arial", false, false},

+    {"Helvetica-Bold", "Arial", true, false},

+    {"Helvetica-BoldOblique", "Arial", true, true},

+    {"Helvetica-Oblique", "Arial", false, true},

+    {"Times-Roman", "Times New Roman", false, false},

+    {"Times-Bold", "Times New Roman", true, false},

+    {"Times-BoldItalic", "Times New Roman", true, true},

+    {"Times-Italic", "Times New Roman", false, true},

+

+    // MS P?(Mincho|Gothic) are the most notable fonts in Japanese PDF files

+    // without embedding the glyphs. Sometimes the font names are encoded

+    // in Japanese Windows's locale (CP932/Shift_JIS) without space.

+    // Most Linux systems don't have the exact font, but for outsourcing

+    // fontconfig to find substitutable font in the system, we pass ASCII

+    // font names to it.

+    {"MS-PGothic", "MS PGothic", false, false},

+    {"MS-Gothic", "MS Gothic", false, false},

+    {"MS-PMincho", "MS PMincho", false, false},

+    {"MS-Mincho", "MS Mincho", false, false},

+    // MS PGothic in Shift_JIS encoding.

+    {"\x82\x6C\x82\x72\x82\x6F\x83\x53\x83\x56\x83\x62\x83\x4E",

+     "MS PGothic", false, false},

+    // MS Gothic in Shift_JIS encoding.

+    {"\x82\x6C\x82\x72\x83\x53\x83\x56\x83\x62\x83\x4E",

+     "MS Gothic", false, false},

+    // MS PMincho in Shift_JIS encoding.

+    {"\x82\x6C\x82\x72\x82\x6F\x96\xBE\x92\xA9",

+     "MS PMincho", false, false},

+    // MS Mincho in Shift_JIS encoding.

+    {"\x82\x6C\x82\x72\x96\xBE\x92\xA9",

+     "MS Mincho", false, false},

+};

+

+void* MapFont(struct _FPDF_SYSFONTINFO*, int weight, int italic,

+              int charset, int pitch_family, const char* face, int* exact) {

+  // Do not attempt to map fonts if pepper is not initialized (for privet local

+  // printing).

+  // TODO(noamsml): Real font substitution (http://crbug.com/391978)

+  if (!pp::Module::Get())

+    return NULL;

+

+  pp::BrowserFontDescription description;

+

+  // Pretend the system does not have the Symbol font to force a fallback to

+  // the built in Symbol font in CFX_FontMapper::FindSubstFont().

+  if (strcmp(face, "Symbol") == 0)

+    return NULL;

+

+  if (pitch_family & FXFONT_FF_FIXEDPITCH) {

+    description.set_family(PP_BROWSERFONT_TRUSTED_FAMILY_MONOSPACE);

+  } else if (pitch_family & FXFONT_FF_ROMAN) {

+    description.set_family(PP_BROWSERFONT_TRUSTED_FAMILY_SERIF);

+  }

+

+  // Map from the standard PDF fonts to TrueType font names.

+  size_t i;

+  for (i = 0; i < arraysize(PDFFontSubstitutions); ++i) {

+    if (strcmp(face, PDFFontSubstitutions[i].pdf_name) == 0) {

+      description.set_face(PDFFontSubstitutions[i].face);

+      if (PDFFontSubstitutions[i].bold)

+        description.set_weight(PP_BROWSERFONT_TRUSTED_WEIGHT_BOLD);

+      if (PDFFontSubstitutions[i].italic)

+        description.set_italic(true);

+      break;

+    }

+  }

+

+  if (i == arraysize(PDFFontSubstitutions)) {

+    // TODO(kochi): Pass the face in UTF-8. If face is not encoded in UTF-8,

+    // convert to UTF-8 before passing.

+    description.set_face(face);

+

+    description.set_weight(WeightToBrowserFontTrustedWeight(weight));

+    description.set_italic(italic > 0);

+  }

+

+  if (!pp::PDF::IsAvailable()) {

+    NOTREACHED();

+    return NULL;

+  }

+

+  PP_Resource font_resource = pp::PDF::GetFontFileWithFallback(

+      pp::InstanceHandle(g_last_instance_id),

+      &description.pp_font_description(),

+      static_cast<PP_PrivateFontCharset>(charset));

+  long res_id = font_resource;

+  return reinterpret_cast<void*>(res_id);

+}

+

+unsigned long GetFontData(struct _FPDF_SYSFONTINFO*, void* font_id,

+                          unsigned int table, unsigned char* buffer,

+                          unsigned long buf_size) {

+  if (!pp::PDF::IsAvailable()) {

+    NOTREACHED();

+    return 0;

+  }

+

+  uint32_t size = buf_size;

+  long res_id = reinterpret_cast<long>(font_id);

+  if (!pp::PDF::GetFontTableForPrivateFontFile(res_id, table, buffer, &size))

+    return 0;

+  return size;

+}

+

+void DeleteFont(struct _FPDF_SYSFONTINFO*, void* font_id) {

+  long res_id = reinterpret_cast<long>(font_id);

+  pp::Module::Get()->core()->ReleaseResource(res_id);

+}

+

+FPDF_SYSFONTINFO g_font_info = {

+  1,

+  0,

+  EnumFonts,

+  MapFont,

+  0,

+  GetFontData,

+  0,

+  0,

+  DeleteFont

+};

+#endif  // defined(OS_LINUX)

+

+void OOM_Handler(_OOM_INFO*) {

+  // Kill the process.  This is important for security, since the code doesn't

+  // NULL-check many memory allocations.  If a malloc fails, returns NULL, and

+  // the buffer is then used, it provides a handy mapping of memory starting at

+  // address 0 for an attacker to utilize.

+  abort();

+}

+

+OOM_INFO g_oom_info = {

+  1,

+  OOM_Handler

+};

+

+PDFiumEngine* g_engine_for_unsupported;

+

+void Unsupported_Handler(UNSUPPORT_INFO*, int type) {

+  if (!g_engine_for_unsupported) {

+    NOTREACHED();

+    return;

+  }

+

+  g_engine_for_unsupported->UnsupportedFeature(type);

+}

+

+UNSUPPORT_INFO g_unsuppored_info = {

+  1,

+  Unsupported_Handler

+};

+

+// Set the destination page size and content area in points based on source

+// page rotation and orientation.

+//

+// |rotated| True if source page is rotated 90 degree or 270 degree.

+// |is_src_page_landscape| is true if the source page orientation is landscape.

+// |page_size| has the actual destination page size in points.

+// |content_rect| has the actual destination page printable area values in

+// points.

+void SetPageSizeAndContentRect(bool rotated,

+                               bool is_src_page_landscape,

+                               pp::Size* page_size,

+                               pp::Rect* content_rect) {

+  bool is_dst_page_landscape = page_size->width() > page_size->height();

+  bool page_orientation_mismatched = is_src_page_landscape !=

+                                     is_dst_page_landscape;

+  bool rotate_dst_page = rotated ^ page_orientation_mismatched;

+  if (rotate_dst_page) {

+    page_size->SetSize(page_size->height(), page_size->width());

+    content_rect->SetRect(content_rect->y(), content_rect->x(),

+                          content_rect->height(), content_rect->width());

+  }

+}

+

+// Calculate the scale factor between |content_rect| and a page of size

+// |src_width| x |src_height|.

+//

+// |scale_to_fit| is true, if we need to calculate the scale factor.

+// |content_rect| specifies the printable area of the destination page, with

+// origin at left-bottom. Values are in points.

+// |src_width| specifies the source page width in points.

+// |src_height| specifies the source page height in points.

+// |rotated| True if source page is rotated 90 degree or 270 degree.

+double CalculateScaleFactor(bool scale_to_fit,

+                            const pp::Rect& content_rect,

+                            double src_width, double src_height, bool rotated) {

+  if (!scale_to_fit || src_width == 0 || src_height == 0)

+    return 1.0;

+

+  double actual_source_page_width = rotated ? src_height : src_width;

+  double actual_source_page_height = rotated ? src_width : src_height;

+  double ratio_x = static_cast<double>(content_rect.width()) /

+                   actual_source_page_width;

+  double ratio_y = static_cast<double>(content_rect.height()) /

+                   actual_source_page_height;

+  return std::min(ratio_x, ratio_y);

+}

+

+// Compute source clip box boundaries based on the crop box / media box of

+// source page and scale factor.

+//

+// |page| Handle to the source page. Returned by FPDF_LoadPage function.

+// |scale_factor| specifies the scale factor that should be applied to source

+// clip box boundaries.

+// |rotated| True if source page is rotated 90 degree or 270 degree.

+// |clip_box| out param to hold the computed source clip box values.

+void CalculateClipBoxBoundary(FPDF_PAGE page, double scale_factor, bool rotated,

+                              ClipBox* clip_box) {

+  if (!FPDFPage_GetCropBox(page, &clip_box->left, &clip_box->bottom,

+                           &clip_box->right, &clip_box->top)) {

+    if (!FPDFPage_GetMediaBox(page, &clip_box->left, &clip_box->bottom,

+                              &clip_box->right, &clip_box->top)) {

+      // Make the default size to be letter size (8.5" X 11"). We are just

+      // following the PDFium way of handling these corner cases. PDFium always

+      // consider US-Letter as the default page size.

+      float paper_width = 612;

+      float paper_height = 792;

+      clip_box->left = 0;

+      clip_box->bottom = 0;

+      clip_box->right = rotated ? paper_height : paper_width;

+      clip_box->top = rotated ? paper_width : paper_height;

+    }

+  }

+  clip_box->left *= scale_factor;

+  clip_box->right *= scale_factor;

+  clip_box->bottom *= scale_factor;

+  clip_box->top *= scale_factor;

+}

+

+// Calculate the clip box translation offset for a page that does need to be

+// scaled. All parameters are in points.

+//

+// |content_rect| specifies the printable area of the destination page, with

+// origin at left-bottom.

+// |source_clip_box| specifies the source clip box positions, relative to

+// origin at left-bottom.

+// |offset_x| and |offset_y| will contain the final translation offsets for the

+// source clip box, relative to origin at left-bottom.

+void CalculateScaledClipBoxOffset(const pp::Rect& content_rect,

+                                  const ClipBox& source_clip_box,

+                                  double* offset_x, double* offset_y) {

+  const float clip_box_width = source_clip_box.right - source_clip_box.left;

+  const float clip_box_height = source_clip_box.top - source_clip_box.bottom;

+

+  // Center the intended clip region to real clip region.

+  *offset_x = (content_rect.width() - clip_box_width) / 2 + content_rect.x() -

+              source_clip_box.left;

+  *offset_y = (content_rect.height() - clip_box_height) / 2 + content_rect.y() -

+              source_clip_box.bottom;

+}

+

+// Calculate the clip box offset for a page that does not need to be scaled.

+// All parameters are in points.

+//

+// |content_rect| specifies the printable area of the destination page, with

+// origin at left-bottom.

+// |rotation| specifies the source page rotation values which are N / 90

+// degrees.

+// |page_width| specifies the screen destination page width.

+// |page_height| specifies the screen destination page height.

+// |source_clip_box| specifies the source clip box positions, relative to origin

+// at left-bottom.

+// |offset_x| and |offset_y| will contain the final translation offsets for the

+// source clip box, relative to origin at left-bottom.

+void CalculateNonScaledClipBoxOffset(const pp::Rect& content_rect, int rotation,

+                                     int page_width, int page_height,

+                                     const ClipBox& source_clip_box,

+                                     double* offset_x, double* offset_y) {

+  // Align the intended clip region to left-top corner of real clip region.

+  switch (rotation) {

+    case 0:

+      *offset_x = -1 * source_clip_box.left;

+      *offset_y = page_height - source_clip_box.top;

+      break;

+    case 1:

+      *offset_x = 0;

+      *offset_y = -1 * source_clip_box.bottom;

+      break;

+    case 2:

+      *offset_x = page_width - source_clip_box.right;

+      *offset_y = 0;

+      break;

+    case 3:

+      *offset_x = page_height - source_clip_box.right;

+      *offset_y = page_width - source_clip_box.top;

+      break;

+    default:

+      NOTREACHED();

+      break;

+  }

+}

+

+// This formats a string with special 0xfffe end-of-line hyphens the same way

+// as Adobe Reader. When a hyphen is encountered, the next non-CR/LF whitespace

+// becomes CR+LF and the hyphen is erased. If there is no whitespace between

+// two hyphens, the latter hyphen is erased and ignored.

+void FormatStringWithHyphens(base::string16* text) {

+  // First pass marks all the hyphen positions.

+  struct HyphenPosition {

+    HyphenPosition() : position(0), next_whitespace_position(0) {}

+    size_t position;

+    size_t next_whitespace_position;  // 0 for none

+  };

+  std::vector<HyphenPosition> hyphen_positions;

+  HyphenPosition current_hyphen_position;

+  bool current_hyphen_position_is_valid = false;

+  const base::char16 kPdfiumHyphenEOL = 0xfffe;

+

+  for (size_t i = 0; i < text->size(); ++i) {

+    const base::char16& current_char = (*text)[i];

+    if (current_char == kPdfiumHyphenEOL) {

+      if (current_hyphen_position_is_valid)

+        hyphen_positions.push_back(current_hyphen_position);

+      current_hyphen_position = HyphenPosition();

+      current_hyphen_position.position = i;

+      current_hyphen_position_is_valid = true;

+    } else if (IsWhitespace(current_char)) {

+      if (current_hyphen_position_is_valid) {

+        if (current_char != L'\r' && current_char != L'\n')

+          current_hyphen_position.next_whitespace_position = i;

+        hyphen_positions.push_back(current_hyphen_position);

+        current_hyphen_position_is_valid = false;

+      }

+    }

+  }

+  if (current_hyphen_position_is_valid)

+    hyphen_positions.push_back(current_hyphen_position);

+

+  // With all the hyphen positions, do the search and replace.

+  while (!hyphen_positions.empty()) {

+    static const base::char16 kCr[] = {L'\r', L'\0'};

+    const HyphenPosition& position = hyphen_positions.back();

+    if (position.next_whitespace_position != 0) {

+      (*text)[position.next_whitespace_position] = L'\n';

+      text->insert(position.next_whitespace_position, kCr);

+    }

+    text->erase(position.position, 1);

+    hyphen_positions.pop_back();

+  }

+

+  // Adobe Reader also get rid of trailing spaces right before a CRLF.

+  static const base::char16 kSpaceCrCn[] = {L' ', L'\r', L'\n', L'\0'};

+  static const base::char16 kCrCn[] = {L'\r', L'\n', L'\0'};

+  ReplaceSubstringsAfterOffset(text, 0, kSpaceCrCn, kCrCn);

+}

+

+// Replace CR/LF with just LF on POSIX.

+void FormatStringForOS(base::string16* text) {

+#if defined(OS_POSIX)

+  static const base::char16 kCr[] = {L'\r', L'\0'};

+  static const base::char16 kBlank[] = {L'\0'};

+  base::ReplaceChars(*text, kCr, kBlank, text);

+#elif defined(OS_WIN)

+  // Do nothing

+#else

+  NOTIMPLEMENTED();

+#endif

+}

+

+}  // namespace

+

+bool InitializeSDK(void* data) {

+  FPDF_InitLibrary(data);

+

+#if defined(OS_LINUX)

+  // Font loading doesn't work in the renderer sandbox in Linux.

+  FPDF_SetSystemFontInfo(&g_font_info);

+#endif

+

+  FSDK_SetOOMHandler(&g_oom_info);

+  FSDK_SetUnSpObjProcessHandler(&g_unsuppored_info);

+

+  return true;

+}

+

+void ShutdownSDK() {

+  FPDF_DestroyLibrary();

+}

+

+PDFEngine* PDFEngine::Create(PDFEngine::Client* client) {

+  return new PDFiumEngine(client);

+}

+

+PDFiumEngine::PDFiumEngine(PDFEngine::Client* client)

+    : client_(client),

+      current_zoom_(1.0),

+      current_rotation_(0),

+      doc_loader_(this),

+      password_tries_remaining_(0),

+      doc_(NULL),

+      form_(NULL),

+      defer_page_unload_(false),

+      selecting_(false),

+      mouse_down_state_(PDFiumPage::NONSELECTABLE_AREA,

+                        PDFiumPage::LinkTarget()),

+      next_page_to_search_(-1),

+      last_page_to_search_(-1),

+      last_character_index_to_search_(-1),

+      current_find_index_(-1),

+      resume_find_index_(-1),

+      permissions_(0),

+      fpdf_availability_(NULL),

+      next_timer_id_(0),

+      last_page_mouse_down_(-1),

+      first_visible_page_(-1),

+      most_visible_page_(-1),

+      called_do_document_action_(false),

+      render_grayscale_(false),

+      progressive_paint_timeout_(0),

+      getting_password_(false) {

+  find_factory_.Initialize(this);

+  password_factory_.Initialize(this);

+

+  file_access_.m_FileLen = 0;

+  file_access_.m_GetBlock = &GetBlock;

+  file_access_.m_Param = &doc_loader_;

+

+  file_availability_.version = 1;

+  file_availability_.IsDataAvail = &IsDataAvail;

+  file_availability_.loader = &doc_loader_;

+

+  download_hints_.version = 1;

+  download_hints_.AddSegment = &AddSegment;

+  download_hints_.loader = &doc_loader_;

+

+  // Initialize FPDF_FORMFILLINFO member variables.  Deriving from this struct

+  // allows the static callbacks to be able to cast the FPDF_FORMFILLINFO in

+  // callbacks to ourself instead of maintaining a map of them to

+  // PDFiumEngine.

+  FPDF_FORMFILLINFO::version = 1;

+  FPDF_FORMFILLINFO::m_pJsPlatform = this;

+  FPDF_FORMFILLINFO::Release = NULL;

+  FPDF_FORMFILLINFO::FFI_Invalidate = Form_Invalidate;

+  FPDF_FORMFILLINFO::FFI_OutputSelectedRect = Form_OutputSelectedRect;

+  FPDF_FORMFILLINFO::FFI_SetCursor = Form_SetCursor;

+  FPDF_FORMFILLINFO::FFI_SetTimer = Form_SetTimer;

+  FPDF_FORMFILLINFO::FFI_KillTimer = Form_KillTimer;

+  FPDF_FORMFILLINFO::FFI_GetLocalTime = Form_GetLocalTime;

+  FPDF_FORMFILLINFO::FFI_OnChange = Form_OnChange;

+  FPDF_FORMFILLINFO::FFI_GetPage = Form_GetPage;

+  FPDF_FORMFILLINFO::FFI_GetCurrentPage = Form_GetCurrentPage;

+  FPDF_FORMFILLINFO::FFI_GetRotation = Form_GetRotation;

+  FPDF_FORMFILLINFO::FFI_ExecuteNamedAction = Form_ExecuteNamedAction;

+  FPDF_FORMFILLINFO::FFI_SetTextFieldFocus = Form_SetTextFieldFocus;

+  FPDF_FORMFILLINFO::FFI_DoURIAction = Form_DoURIAction;

+  FPDF_FORMFILLINFO::FFI_DoGoToAction = Form_DoGoToAction;

+#ifdef _TEST_XFA

+  FPDF_FORMFILLINFO::FFI_EmailTo = Form_EmailTo;

+  FPDF_FORMFILLINFO::FFI_DisplayCaret = Form_DisplayCaret;

+  //FPDF_FORMFILLINFO::FFI_GetCurDocumentIndex = Form_GetCurDocumentIndex;

+  //FPDF_FORMFILLINFO::FFI_GetDocumentCount = Form_GetDocumentCount;

+  FPDF_FORMFILLINFO::FFI_SetCurrentPage = Form_SetCurrentPage;

+  FPDF_FORMFILLINFO::FFI_GetCurrentPageIndex = Form_GetCurrentPageIndex;

+  FPDF_FORMFILLINFO::FFI_GetPageViewRect = Form_GetPageViewRect;

+  FPDF_FORMFILLINFO::FFI_GetPlatform = Form_GetPlatform;

+  FPDF_FORMFILLINFO::FFI_PopupMenu = Form_PopupMenu;

+  FPDF_FORMFILLINFO::FFI_PostRequestURL = Form_PostRequestURL;

+  FPDF_FORMFILLINFO::FFI_PutRequestURL = Form_PutRequestURL;

+//  FPDF_FORMFILLINFO::FFI_ShowFileDialog = Form_ShowFileDialog;

+  FPDF_FORMFILLINFO::FFI_UploadTo = Form_UploadTo;

+  FPDF_FORMFILLINFO::FFI_DownloadFromURL = Form_DownloadFromURL;

+ // FPDF_FORMFILLINFO::FFI_GetFilePath = MyForm_GetFilePath;

+  FPDF_FORMFILLINFO::FFI_OpenFile = Form_OpenFile;

+  FPDF_FORMFILLINFO::FFI_GotoURL = Form_GotoURL;

+  FPDF_FORMFILLINFO::FFI_GetLanguage = Form_GetLanguage;

+#endif // _TEST_XFA

+  IPDF_JSPLATFORM::version = 1;

+  IPDF_JSPLATFORM::app_alert = Form_Alert;

+  IPDF_JSPLATFORM::app_beep = Form_Beep;

+  IPDF_JSPLATFORM::app_response = Form_Response;

+  IPDF_JSPLATFORM::Doc_getFilePath = Form_GetFilePath;

+  IPDF_JSPLATFORM::Doc_mail = Form_Mail;

+  IPDF_JSPLATFORM::Doc_print = Form_Print;

+  IPDF_JSPLATFORM::Doc_submitForm = Form_SubmitForm;

+  IPDF_JSPLATFORM::Doc_gotoPage = Form_GotoPage;

+  IPDF_JSPLATFORM::Field_browse = Form_Browse;

+

+  IFSDK_PAUSE::version = 1;

+  IFSDK_PAUSE::user = NULL;

+  IFSDK_PAUSE::NeedToPauseNow = Pause_NeedToPauseNow;

+}

+

+PDFiumEngine::~PDFiumEngine() {

+  for (size_t i = 0; i < pages_.size(); ++i)

+    pages_[i]->Unload();

+

+  if (doc_) {

+    if (form_) {

+      FORM_DoDocumentAAction(form_, FPDFDOC_AACTION_WC);

+    }

+    FPDF_CloseDocument(doc_);

+	if (form_) {

+		FPDFDOC_ExitFormFillEnviroument(form_);

+	}

+  }

+

+  if (fpdf_availability_)

+    FPDFAvail_Destroy(fpdf_availability_);

+

+  STLDeleteElements(&pages_);

+}

+

+#ifdef _TEST_XFA

+

+typedef struct _FPDF_FILE {

+	FPDF_FILEHANDLER fileHandler;

+	FILE* file;

+}FPDF_FILE;

+

+

+void		Sample_Release(FPDF_LPVOID clientData) {

+	if (!clientData) return;

+

+	fclose(((FPDF_FILE*)clientData)->file);

+	delete ((FPDF_FILE*)clientData);

+}

+

+FPDF_DWORD	Sample_GetSize(FPDF_LPVOID clientData) {

+	if (!clientData) return 0;

+

+	long curPos = ftell(((FPDF_FILE*)clientData)->file);

+	fseek(((FPDF_FILE*)clientData)->file, 0, SEEK_END);

+	long size = ftell(((FPDF_FILE*)clientData)->file);

+	fseek(((FPDF_FILE*)clientData)->file, curPos, SEEK_SET);

+

+	return (FPDF_DWORD)size;

+}

+

+FPDF_RESULT	Sample_ReadBlock(FPDF_LPVOID clientData, FPDF_DWORD offset, FPDF_LPVOID buffer, FPDF_DWORD size) {

+	if (!clientData) return -1;

+

+	fseek(((FPDF_FILE*)clientData)->file, (long)offset, SEEK_SET);

+	size_t readSize = fread(buffer, 1, size, ((FPDF_FILE*)clientData)->file);

+	return readSize == size ? 0 : -1;

+}

+

+FPDF_RESULT	Sample_WriteBlock(FPDF_LPVOID clientData, FPDF_DWORD offset, FPDF_LPCVOID buffer, FPDF_DWORD size) {

+	if (!clientData) return -1;

+

+	fseek(((FPDF_FILE*)clientData)->file, (long)offset, SEEK_SET);

+	//Write data

+	size_t writeSize = fwrite(buffer, 1, size, ((FPDF_FILE*)clientData)->file);

+	return writeSize == size ? 0 : -1;

+}

+

+FPDF_RESULT	Sample_Flush(FPDF_LPVOID clientData) {

+	if (!clientData) return -1;

+

+	//Flush file

+	fflush(((FPDF_FILE*)clientData)->file);

+

+	return 0;

+}

+

+FPDF_RESULT	Sample_Truncate(FPDF_LPVOID clientData, FPDF_DWORD size) {

+	return 0;

+}

+

+

+void PDFiumEngine::Form_EmailTo(FPDF_FORMFILLINFO* pThis,

+	FPDF_FILEHANDLER* fileHandler,

+	FPDF_WIDESTRING to,

+	FPDF_WIDESTRING subject,

+	FPDF_WIDESTRING cc,

+	FPDF_WIDESTRING bcc,

+	FPDF_WIDESTRING message) {

+	std::string to_str =

+		base::UTF16ToUTF8(reinterpret_cast<const base::char16*>(to));

+	std::string subject_str =

+		base::UTF16ToUTF8(reinterpret_cast<const base::char16*>(subject));

+	std::string cc_str =

+		base::UTF16ToUTF8(reinterpret_cast<const base::char16*>(cc));

+	std::string bcc_str =

+		base::UTF16ToUTF8(reinterpret_cast<const base::char16*>(bcc));

+	std::string message_str =

+		base::UTF16ToUTF8(reinterpret_cast<const base::char16*>(message));

+

+	PDFiumEngine* engine = static_cast<PDFiumEngine*>(pThis);

+	engine->client_->Email(to_str, cc_str, bcc_str, subject_str, message_str);

+}

+

+void PDFiumEngine::Form_DisplayCaret(FPDF_FORMFILLINFO* pThis,

+					   FPDF_PAGE page, FPDF_BOOL bVisible, 

+					   double left, double top, double right, double bottom) {

+	PDFiumEngine* engine = static_cast<PDFiumEngine*>(pThis);

+	engine->client_->UpdateCursor(PP_CURSORTYPE_IBEAM);

+	std::vector<pp::Rect> tickmarks;

+	pp::Rect rect(left, top, right, bottom);

+	tickmarks.push_back(rect);

+	engine->client_->UpdateTickMarks(tickmarks);

+}

+

+//int PDFiumEngine::Form_GetCurDocumentIndex(FPDF_FORMFILLINFO* pThis) {

+//	PDFiumEngine* engine = static_cast<PDFiumEngine*>(pThis);

+//	engine->client_->RunJSCmd("alert(\"GetCurDocumentIndex\")");

+//	return 0;

+//}

+//

+//int PDFiumEngine::Form_GetDocumentCount(FPDF_FORMFILLINFO* pThis) {

+//	PDFiumEngine* engine = static_cast<PDFiumEngine*>(pThis);

+//	engine->client_->RunJSCmd("alert(\"GetCurDocumentCount\")");

+//	return 0;

+//}

+

+void PDFiumEngine::Form_SetCurrentPage(FPDF_FORMFILLINFO* pThis, FPDF_DOCUMENT document, int iCurPage) {

+	PDFiumEngine* engine = static_cast<PDFiumEngine*>(pThis);

+	pp::Rect pageViewRect = engine->GetPageContentsRect(iCurPage);

+	engine->ScrolledToYPosition(pageViewRect.height());

+	pp::Point pos(1, pageViewRect.height());

+	engine->SetScrollPosition(pos);

+}

+

+int PDFiumEngine::Form_GetCurrentPageIndex(FPDF_FORMFILLINFO* pThis, FPDF_DOCUMENT document) {

+	//int pageCount = FPDF_GetPageCount(document);

+	int pageIndex = -1;

+	PDFiumEngine* engine = static_cast<PDFiumEngine*>(pThis);

+	pageIndex = engine->GetMostVisiblePage();

+	return pageIndex;

+}

+

+void PDFiumEngine::Form_GetPageViewRect(FPDF_FORMFILLINFO* pThis,

+						  FPDF_PAGE page, 

+						  double* left, double* top, double* right, double* bottom) {

+	PDFiumEngine* engine = static_cast<PDFiumEngine*>(pThis);

+	int page_index = engine->GetMostVisiblePage();

+	pp::Rect pageViewRect = engine->GetPageContentsRect(page_index);

+	

+	*left = pageViewRect.x();

+	*right = pageViewRect.width() + pageViewRect.x();

+	*top = pageViewRect.y();

+	*bottom = pageViewRect.height();

+

+	std::string javascript = "alert(\"PageViewRect:" 

+		+ base::DoubleToString(*left) + ","

+		+ base::DoubleToString(*right) + ","

+		+ base::DoubleToString(*top) + ","

+		+ base::DoubleToString(*bottom) + ","

+		+ "\")";

+ 

+}

+

+int PDFiumEngine::Form_GetPlatform(FPDF_FORMFILLINFO* pThis,

+					  void* platform,

+					  int length) {

+	int platform_flag = -1;

+#if defined(WIN32)

+	platform_flag = 0;

+#elif defined(__linux__)

+	platform_flag = 1;

+#else

+	platform_flag = 2;

+#endif

+	std::string javascript = "alert(\"Platform:" 

+		+ base::DoubleToString(platform_flag)

+		+ "\")";

+	//platform = new char[3];

+	//char tem[10] = "WIN";

+	//strncpy((char*)platform, tem, 3);

+

+	return 3;

+}

+

+FPDF_BOOL PDFiumEngine::Form_PopupMenu(FPDF_FORMFILLINFO* pThis,

+					FPDF_PAGE page, 

+					FPDF_WIDGET hWidget, 

+					int menuFlag, float x, float y) {

+	return false;

+}

+

+FPDF_BOOL PDFiumEngine::Form_PostRequestURL(FPDF_FORMFILLINFO* pThis, FPDF_WIDESTRING wsURL,

+						 FPDF_WIDESTRING wsData, FPDF_WIDESTRING wsContentType,

+						 FPDF_WIDESTRING wsEncode, FPDF_WIDESTRING wsHeader, FPDF_BSTR* respone) {

+	std::string url_str =

+		base::UTF16ToUTF8(reinterpret_cast<const base::char16*>(wsURL));

+	std::string data_str =

+		base::UTF16ToUTF8(reinterpret_cast<const base::char16*>(wsData));

+	std::string content_type_str =

+		base::UTF16ToUTF8(reinterpret_cast<const base::char16*>(wsContentType));

+	std::string encode_str =

+		base::UTF16ToUTF8(reinterpret_cast<const base::char16*>(wsEncode));

+	std::string header_str =

+		base::UTF16ToUTF8(reinterpret_cast<const base::char16*>(wsHeader));

+

+	std::string javascript = "alert(\"Post:"

+		+ url_str + "," + data_str + "," + content_type_str + ","

+		+ encode_str + "," + header_str 

+		+ "\")";

+	return true;

+}

+

+FPDF_BOOL PDFiumEngine::Form_PutRequestURL(FPDF_FORMFILLINFO* pThis,

+						FPDF_WIDESTRING wsURL, FPDF_WIDESTRING wsData, FPDF_WIDESTRING wsEncode) {

+	std::string url_str =

+		base::UTF16ToUTF8(reinterpret_cast<const base::char16*>(wsURL));

+	std::string data_str =

+		base::UTF16ToUTF8(reinterpret_cast<const base::char16*>(wsData));

+	std::string encode_str =

+		base::UTF16ToUTF8(reinterpret_cast<const base::char16*>(wsEncode));

+

+	std::string javascript = "alert(\"Put:"

+		+ url_str + "," + data_str + "," + encode_str 

+		+ "\")";

+

+	return true;

+}

+

+//FPDF_BOOL PDFiumEngine::Form_ShowFileDialog(FPDF_FORMFILLINFO* pThis, FPDF_WIDESTRING wsTitle, FPDF_WIDESTRING wsFilter, FPDF_BOOL isOpen, FPDF_STRINGHANDLE pathArr) {

+//	int tem = 1;

+//	tem++;

+//	return false;

+//}

+

+void PDFiumEngine::Form_UploadTo(FPDF_FORMFILLINFO* pThis, FPDF_FILEHANDLER* fileHandler, int fileFlag, FPDF_WIDESTRING uploadTo) {

+	std::string to_str =

+		base::UTF16ToUTF8(reinterpret_cast<const base::char16*>(uploadTo));

+

+}

+

+FPDF_LPFILEHANDLER PDFiumEngine::Form_DownloadFromURL(FPDF_FORMFILLINFO* pThis, FPDF_WIDESTRING URL) {

+	std::string url_str =

+		base::UTF16ToUTF8(reinterpret_cast<const base::char16*>(URL));

+

+

+	// Get URL data...

+	FILE* file = fopen(FXQA_TESTFILE("downloadtest.tem"), "w");

+	FPDF_FILE* pFileHander = new FPDF_FILE;

+	pFileHander->file = file;

+	pFileHander->fileHandler.clientData = pFileHander;

+	pFileHander->fileHandler.Flush = Sample_Flush;

+	pFileHander->fileHandler.GetSize = Sample_GetSize;

+	pFileHander->fileHandler.ReadBlock = Sample_ReadBlock;

+	pFileHander->fileHandler.Release = Sample_Release;

+	pFileHander->fileHandler.Truncate = Sample_Truncate;

+	pFileHander->fileHandler.WriteBlock = Sample_WriteBlock;

+

+	return &pFileHander->fileHandler;

+}

+

+//FPDF_BOOL PDFiumEngine::MyForm_GetFilePath(FPDF_FORMFILLINFO* pThis, FPDF_FILEHANDLER* pFileHandler, void* filePath, int length) {

+//	//std::string filePath = engine->client_->FileOpen(fileFlag);

+//	if (filePath == NULL) {

+//		std::string javascript = "alert(\"GetFilePath:NULL\")";

+//		PDFiumEngine* engine = static_cast<PDFiumEngine*>(pThis);

+//		engine->client_->RunJSCmd(javascript);

+//		return false;

+//	}

+//	std::string filePath_str = (char*)filePath;

+//

+//	std::string javascript = "alert(\"GetFilePath:" + filePath_str + "\")";

+//	PDFiumEngine* engine = static_cast<PDFiumEngine*>(pThis);

+//	engine->client_->RunJSCmd(javascript);

+//

+//	FILE* file = fopen(FXQA_TESTFILE("tem.xdp"), "w");

+//	FPDF_FILE* pFileHander = new FPDF_FILE;

+//	pFileHander->file = file;

+//	pFileHander->fileHandler.clientData = pFileHander;

+//	pFileHander->fileHandler.Flush = Sample_Flush;

+//	pFileHander->fileHandler.GetSize = Sample_GetSize;

+//	pFileHander->fileHandler.ReadBlock = Sample_ReadBlock;

+//	pFileHander->fileHandler.Release = Sample_Release;

+//	pFileHander->fileHandler.Truncate = Sample_Truncate;

+//	pFileHander->fileHandler.WriteBlock = Sample_WriteBlock;

+//

+//	pFileHandler = &pFileHander->fileHandler;

+//

+//	return true;

+//}

+

+FPDF_FILEHANDLER* PDFiumEngine::Form_OpenFile(FPDF_FORMFILLINFO* pThis, int fileFlag, FPDF_WIDESTRING wsURL, const char* mode) {

+	std::string url_str = "NULL";

+	if (wsURL == NULL) {

+		url_str = "NULL";

+	}

+	else {

+		url_str =

+			base::UTF16ToUTF8(reinterpret_cast<const base::char16*>(wsURL));

+	}

+	if (strncmp(mode, "wb", 2) == 0) {

+

+		FILE* file = fopen(FXQA_TESTFILE("tem.txt"), mode);

+		FPDF_FILE* pFileHander = new FPDF_FILE;

+		pFileHander->file = file;

+		pFileHander->fileHandler.clientData = pFileHander;

+		pFileHander->fileHandler.Flush = Sample_Flush;

+		pFileHander->fileHandler.GetSize = Sample_GetSize;

+		pFileHander->fileHandler.ReadBlock = Sample_ReadBlock;

+		pFileHander->fileHandler.Release = Sample_Release;

+		pFileHander->fileHandler.Truncate = Sample_Truncate;

+		pFileHander->fileHandler.WriteBlock = Sample_WriteBlock;

+		return &pFileHander->fileHandler;

+	}

+	else {

+		url_str = base::UTF16ToUTF8(reinterpret_cast<const base::char16*>(wsURL));

+	}

+	return NULL;

+}

+

+

+void PDFiumEngine::Form_GotoURL(FPDF_FORMFILLINFO* pThis, FPDF_DOCUMENT document, FPDF_WIDESTRING wsURL) {

+	std::string url_str =

+		base::UTF16ToUTF8(reinterpret_cast<const base::char16*>(wsURL));

+	int pageCount = FPDF_GetPageCount(document);

+}

+

+int PDFiumEngine::Form_GetLanguage(FPDF_FORMFILLINFO* pThis, void* language, int length) {

+	return 0;

+}

+

+#endif // _TEST_XFA

+

+int PDFiumEngine::GetBlock(void* param, unsigned long position,

+                           unsigned char* buffer, unsigned long size) {

+  DocumentLoader* loader = static_cast<DocumentLoader*>(param);

+  return loader->GetBlock(position, size, buffer);

+}

+

+bool PDFiumEngine::IsDataAvail(FX_FILEAVAIL* param,

+                               size_t offset, size_t size) {

+  PDFiumEngine::FileAvail* file_avail =

+      static_cast<PDFiumEngine::FileAvail*>(param);

+  return file_avail->loader->IsDataAvailable(offset, size);

+}

+

+void PDFiumEngine::AddSegment(FX_DOWNLOADHINTS* param,

+                              size_t offset, size_t size) {

+  PDFiumEngine::DownloadHints* download_hints =

+      static_cast<PDFiumEngine::DownloadHints*>(param);

+  return download_hints->loader->RequestData(offset, size);

+}

+

+bool PDFiumEngine::New(const char* url) {

+  url_ = url;

+  headers_ = std::string();

+  return true;

+}

+

+bool PDFiumEngine::New(const char* url,

+                       const char* headers) {

+  url_ = url;

+  if (!headers)

+    headers_ = std::string();

+  else

+    headers_ = headers;

+  return true;

+}

+

+void PDFiumEngine::PageOffsetUpdated(const pp::Point& page_offset) {

+  page_offset_ = page_offset;

+}

+

+void PDFiumEngine::PluginSizeUpdated(const pp::Size& size) {

+  CancelPaints();

+

+  plugin_size_ = size;

+  CalculateVisiblePages();

+}

+

+void PDFiumEngine::ScrolledToXPosition(int position) {

+  CancelPaints();

+

+  int old_x = position_.x();

+  position_.set_x(position);

+  CalculateVisiblePages();

+  client_->Scroll(pp::Point(old_x - position, 0));

+}

+

+void PDFiumEngine::ScrolledToYPosition(int position) {

+  CancelPaints();

+

+  int old_y = position_.y();

+  position_.set_y(position);

+  CalculateVisiblePages();

+  client_->Scroll(pp::Point(0, old_y - position));

+}

+

+void PDFiumEngine::PrePaint() {

+  for (size_t i = 0; i < progressive_paints_.size(); ++i)

+    progressive_paints_[i].painted_ = false;

+}

+

+void PDFiumEngine::Paint(const pp::Rect& rect,

+                         pp::ImageData* image_data,

+                         std::vector<pp::Rect>* ready,

+                         std::vector<pp::Rect>* pending) {

+  pp::Rect leftover = rect;

+  for (size_t i = 0; i < visible_pages_.size(); ++i) {

+    int index = visible_pages_[i];

+    pp::Rect page_rect = pages_[index]->rect();

+    // Convert the current page's rectangle to screen rectangle.  We do this

+    // instead of the reverse (converting the dirty rectangle from screen to

+    // page coordinates) because then we'd have to convert back to screen

+    // coordinates, and the rounding errors sometime leave pixels dirty or even

+    // move the text up or down a pixel when zoomed.

+    pp::Rect page_rect_in_screen = GetPageScreenRect(index);

+    pp::Rect dirty_in_screen = page_rect_in_screen.Intersect(leftover);

+    if (dirty_in_screen.IsEmpty())

+      continue;

+

+    leftover = leftover.Subtract(dirty_in_screen);

+

+    if (pages_[index]->available()) {

+      int progressive = GetProgressiveIndex(index);

+      if (progressive != -1 &&

+          progressive_paints_[progressive].rect != dirty_in_screen) {

+        // The PDFium code can only handle one progressive paint at a time, so

+        // queue this up. Previously we used to merge the rects when this

+        // happened, but it made scrolling up on complex PDFs very slow since

+        // there would be a damaged rect at the top (from scroll) and at the

+        // bottom (from toolbar).

+        pending->push_back(dirty_in_screen);

+        continue;

+      }

+

+      if (progressive == -1) {

+        progressive = StartPaint(index, dirty_in_screen);

+        progressive_paint_timeout_ = kMaxInitialProgressivePaintTimeMs;

+      } else {

+        progressive_paint_timeout_ = kMaxProgressivePaintTimeMs;

+      }

+

+      progressive_paints_[progressive].painted_ = true;

+      if (ContinuePaint(progressive, image_data)) {

+        FinishPaint(progressive, image_data);

+        ready->push_back(dirty_in_screen);

+      } else {

+        pending->push_back(dirty_in_screen);

+      }

+    } else {

+      PaintUnavailablePage(index, dirty_in_screen, image_data);

+      ready->push_back(dirty_in_screen);

+    }

+  }

+}

+

+void PDFiumEngine::PostPaint() {

+  for (size_t i = 0; i < progressive_paints_.size(); ++i) {

+    if (progressive_paints_[i].painted_)

+      continue;

+

+    // This rectangle must have been merged with another one, that's why we

+    // weren't asked to paint it. Remove it or otherwise we'll never finish

+    // painting.

+    FPDF_RenderPage_Close(

+        pages_[progressive_paints_[i].page_index]->GetPage());

+    FPDFBitmap_Destroy(progressive_paints_[i].bitmap);

+    progressive_paints_.erase(progressive_paints_.begin() + i);

+    --i;

+  }

+}

+

+bool PDFiumEngine::HandleDocumentLoad(const pp::URLLoader& loader) {

+  password_tries_remaining_ = kMaxPasswordTries;

+  return doc_loader_.Init(loader, url_, headers_);

+}

+

+pp::Instance* PDFiumEngine::GetPluginInstance() {

+  return client_->GetPluginInstance();

+}

+

+pp::URLLoader PDFiumEngine::CreateURLLoader() {

+  return client_->CreateURLLoader();

+}

+

+void PDFiumEngine::AppendPage(PDFEngine* engine, int index) {

+  // Unload and delete the blank page before appending.

+  pages_[index]->Unload();

+  pages_[index]->set_calculated_links(false);

+  pp::Size curr_page_size = GetPageSize(index);

+  FPDFPage_Delete(doc_, index);

+  FPDF_ImportPages(doc_,

+                   static_cast<PDFiumEngine*>(engine)->doc(),

+                   "1",

+                   index);

+  pp::Size new_page_size = GetPageSize(index);

+  if (curr_page_size != new_page_size)

+    LoadPageInfo(true);

+  client_->Invalidate(GetPageScreenRect(index));

+}

+

+pp::Point PDFiumEngine::GetScrollPosition() {

+  return position_;

+}

+

+void PDFiumEngine::SetScrollPosition(const pp::Point& position) {

+  position_ = position;

+}

+

+bool PDFiumEngine::IsProgressiveLoad() {

+  return doc_loader_.is_partial_document();

+}

+

+void PDFiumEngine::OnPartialDocumentLoaded() {

+  file_access_.m_FileLen = doc_loader_.document_size();

+  fpdf_availability_ = FPDFAvail_Create(&file_availability_, &file_access_);

+  DCHECK(fpdf_availability_);

+

+  // Currently engine does not deal efficiently with some non-linearized files.

+  // See http://code.google.com/p/chromium/issues/detail?id=59400

+  // To improve user experience we download entire file for non-linearized PDF.

+  if (!FPDFAvail_IsLinearized(fpdf_availability_)) {

+    doc_loader_.RequestData(0, doc_loader_.document_size());

+    return;

+  }

+

+  LoadDocument();

+}

+

+void PDFiumEngine::OnPendingRequestComplete() {

+  if (!doc_ || !form_) {

+    LoadDocument();

+    return;

+  }

+

+  // LoadDocument() will result in |pending_pages_| being reset so there's no

+  // need to run the code below in that case.

+  bool update_pages = false;

+  std::vector<int> still_pending;

+  for (size_t i = 0; i < pending_pages_.size(); ++i) {

+    if (CheckPageAvailable(pending_pages_[i], &still_pending)) {

+      update_pages = true;

+      if (IsPageVisible(pending_pages_[i]))

+        client_->Invalidate(GetPageScreenRect(pending_pages_[i]));

+    }

+  }

+  pending_pages_.swap(still_pending);

+  if (update_pages)

+    LoadPageInfo(true);

+}

+

+void PDFiumEngine::OnNewDataAvailable() {

+  client_->DocumentLoadProgress(doc_loader_.GetAvailableData(),

+                                doc_loader_.document_size());

+}

+

+void PDFiumEngine::OnDocumentComplete() {

+  if (!doc_ || !form_) {

+    file_access_.m_FileLen = doc_loader_.document_size();

+    LoadDocument();

+    return;

+  }

+

+  bool need_update = false;

+  for (size_t i = 0; i < pages_.size(); ++i) {

+    if (pages_[i]->available())

+      continue;

+

+    pages_[i]->set_available(true);

+    // We still need to call IsPageAvail() even if the whole document is

+    // already downloaded.

+    FPDFAvail_IsPageAvail(fpdf_availability_, i, &download_hints_);

+    need_update = true;

+    if (IsPageVisible(i))

+      client_->Invalidate(GetPageScreenRect(i));

+  }

+  if (need_update)

+    LoadPageInfo(true);

+

+  FinishLoadingDocument();

+}

+

+void PDFiumEngine::FinishLoadingDocument() {

+  DCHECK(doc_loader_.IsDocumentComplete() && doc_);

+  if (called_do_document_action_)

+    return;

+  called_do_document_action_ = true;

+

+  // These can only be called now, as the JS might end up needing a page.

+  FORM_DoDocumentJSAction(form_);

+  FORM_DoDocumentOpenAction(form_);

+  if (most_visible_page_ != -1) {

+    FPDF_PAGE new_page = pages_[most_visible_page_]->GetPage();

+    FORM_DoPageAAction(new_page, form_, FPDFPAGE_AACTION_OPEN);

+  }

+

+  if (doc_) // This can only happen if loading |doc_| fails.

+    client_->DocumentLoadComplete(pages_.size());

+}

+

+void PDFiumEngine::UnsupportedFeature(int type) {

+  std::string feature;

+  switch (type) {

+    case FPDF_UNSP_DOC_XFAFORM:

+      //feature = "XFA";

+      break;

+    case FPDF_UNSP_DOC_PORTABLECOLLECTION:

+      feature = "Portfolios_Packages";

+      break;

+    case FPDF_UNSP_DOC_ATTACHMENT:

+    case FPDF_UNSP_ANNOT_ATTACHMENT:

+      feature = "Attachment";

+      break;

+    case FPDF_UNSP_DOC_SECURITY:

+      feature = "Rights_Management";

+      break;

+    case FPDF_UNSP_DOC_SHAREDREVIEW:

+      feature = "Shared_Review";

+      break;

+    case FPDF_UNSP_DOC_SHAREDFORM_ACROBAT:

+    case FPDF_UNSP_DOC_SHAREDFORM_FILESYSTEM:

+    case FPDF_UNSP_DOC_SHAREDFORM_EMAIL:

+      feature = "Shared_Form";

+      break;

+    case FPDF_UNSP_ANNOT_3DANNOT:

+      feature = "3D";

+      break;

+    case FPDF_UNSP_ANNOT_MOVIE:

+      feature = "Movie";

+      break;

+    case FPDF_UNSP_ANNOT_SOUND:

+      feature = "Sound";

+      break;

+    case FPDF_UNSP_ANNOT_SCREEN_MEDIA:

+    case FPDF_UNSP_ANNOT_SCREEN_RICHMEDIA:

+      feature = "Screen";

+      break;

+    case FPDF_UNSP_ANNOT_SIG:

+      feature = "Digital_Signature";

+      break;

+  }

+  client_->DocumentHasUnsupportedFeature(feature);

+}

+

+void PDFiumEngine::ContinueFind(int32_t result) {

+  StartFind(current_find_text_.c_str(), !!result);

+}

+

+bool PDFiumEngine::HandleEvent(const pp::InputEvent& event) {

+  DCHECK(!defer_page_unload_);

+  defer_page_unload_ = true;

+  bool rv = false;

+  switch (event.GetType()) {

+    case PP_INPUTEVENT_TYPE_MOUSEDOWN:

+      rv = OnMouseDown(pp::MouseInputEvent(event));

+      break;

+    case PP_INPUTEVENT_TYPE_MOUSEUP:

+      rv = OnMouseUp(pp::MouseInputEvent(event));

+      break;

+    case PP_INPUTEVENT_TYPE_MOUSEMOVE:

+      rv = OnMouseMove(pp::MouseInputEvent(event));

+      break;

+    case PP_INPUTEVENT_TYPE_KEYDOWN:

+      rv = OnKeyDown(pp::KeyboardInputEvent(event));

+      break;

+    case PP_INPUTEVENT_TYPE_KEYUP:

+      rv = OnKeyUp(pp::KeyboardInputEvent(event));

+      break;

+    case PP_INPUTEVENT_TYPE_CHAR:

+      rv = OnChar(pp::KeyboardInputEvent(event));

+      break;

+    default:

+      break;

+  }

+

+  DCHECK(defer_page_unload_);

+  defer_page_unload_ = false;

+  for (size_t i = 0; i < deferred_page_unloads_.size(); ++i)

+    pages_[deferred_page_unloads_[i]]->Unload();

+  deferred_page_unloads_.clear();

+  return rv;

+}

+

+uint32_t PDFiumEngine::QuerySupportedPrintOutputFormats() {

+  if (!HasPermission(PDFEngine::PERMISSION_PRINT_LOW_QUALITY))

+    return 0;

+  return PP_PRINTOUTPUTFORMAT_PDF;

+}

+

+void PDFiumEngine::PrintBegin() {

+  FORM_DoDocumentAAction(form_, FPDFDOC_AACTION_WP);

+}

+

+pp::Resource PDFiumEngine::PrintPages(

+    const PP_PrintPageNumberRange_Dev* page_ranges, uint32_t page_range_count,

+    const PP_PrintSettings_Dev& print_settings) {

+  if (HasPermission(PDFEngine::PERMISSION_PRINT_HIGH_QUALITY))

+    return PrintPagesAsPDF(page_ranges, page_range_count, print_settings);

+  else if (HasPermission(PDFEngine::PERMISSION_PRINT_LOW_QUALITY))

+    return PrintPagesAsRasterPDF(page_ranges, page_range_count, print_settings);

+  return pp::Resource();

+}

+

+FPDF_DOCUMENT PDFiumEngine::CreateSinglePageRasterPdf(

+    double source_page_width,

+    double source_page_height,

+    const PP_PrintSettings_Dev& print_settings,

+    PDFiumPage* page_to_print) {

+  FPDF_DOCUMENT temp_doc = FPDF_CreateNewDocument();

+  if (!temp_doc)

+    return temp_doc;

+

+  const pp::Size& bitmap_size(page_to_print->rect().size());

+

+  FPDF_PAGE temp_page =

+      FPDFPage_New(temp_doc, 0, source_page_width, source_page_height);

+

+  pp::ImageData image = pp::ImageData(client_->GetPluginInstance(),

+                                      PP_IMAGEDATAFORMAT_BGRA_PREMUL,

+                                      bitmap_size,

+                                      false);

+

+  FPDF_BITMAP bitmap = FPDFBitmap_CreateEx(bitmap_size.width(),

+                                           bitmap_size.height(),

+                                           FPDFBitmap_BGRx,

+                                           image.data(),

+                                           image.stride());

+

+  // Clear the bitmap

+  FPDFBitmap_FillRect(

+      bitmap, 0, 0, bitmap_size.width(), bitmap_size.height(), 0xFFFFFFFF);

+

+  pp::Rect page_rect = page_to_print->rect();

+  FPDF_RenderPageBitmap(bitmap,

+                        page_to_print->GetPrintPage(),

+                        page_rect.x(),

+                        page_rect.y(),

+                        page_rect.width(),

+                        page_rect.height(),

+                        print_settings.orientation,

+                        FPDF_ANNOT | FPDF_PRINTING | FPDF_NO_CATCH);

+

+  double ratio_x = (static_cast<double>(bitmap_size.width()) * kPointsPerInch) /

+                   print_settings.dpi;

+  double ratio_y =

+      (static_cast<double>(bitmap_size.height()) * kPointsPerInch) /

+      print_settings.dpi;

+

+  // Add the bitmap to an image object and add the image object to the output

+  // page.

+  FPDF_PAGEOBJECT temp_img = FPDFPageObj_NewImgeObj(temp_doc);

+  FPDFImageObj_SetBitmap(&temp_page, 1, temp_img, bitmap);

+  FPDFImageObj_SetMatrix(temp_img, ratio_x, 0, 0, ratio_y, 0, 0);

+  FPDFPage_InsertObject(temp_page, temp_img);

+  FPDFPage_GenerateContent(temp_page);

+  FPDF_ClosePage(temp_page);

+

+  page_to_print->ClosePrintPage();

+  FPDFBitmap_Destroy(bitmap);

+

+  return temp_doc;

+}

+

+pp::Buffer_Dev PDFiumEngine::PrintPagesAsRasterPDF(

+    const PP_PrintPageNumberRange_Dev* page_ranges, uint32_t page_range_count,

+    const PP_PrintSettings_Dev& print_settings) {

+  if (!page_range_count)

+    return pp::Buffer_Dev();

+

+  // If document is not downloaded yet, disable printing.

+  if (doc_ && !doc_loader_.IsDocumentComplete())

+    return pp::Buffer_Dev();

+

+  FPDF_DOCUMENT output_doc = FPDF_CreateNewDocument();

+  if (!output_doc)

+    return pp::Buffer_Dev();

+

+  SaveSelectedFormForPrint();

+

+  std::vector<PDFiumPage> pages_to_print;

+  // width and height of source PDF pages.

+  std::vector<std::pair<double, double> > source_page_sizes;

+  // Collect pages to print and sizes of source pages.

+  std::vector<uint32_t> page_numbers =

+      GetPageNumbersFromPrintPageNumberRange(page_ranges, page_range_count);

+  for (size_t i = 0; i < page_numbers.size(); ++i) {

+    uint32_t page_number = page_numbers[i];

+    FPDF_PAGE pdf_page = FPDF_LoadPage(doc_, page_number);

+    double source_page_width = FPDF_GetPageWidth(pdf_page);

+    double source_page_height = FPDF_GetPageHeight(pdf_page);

+    source_page_sizes.push_back(std::make_pair(source_page_width,

+                                               source_page_height));

+

+    int width_in_pixels = ConvertUnit(source_page_width,

+                                      static_cast<int>(kPointsPerInch),

+                                      print_settings.dpi);

+    int height_in_pixels = ConvertUnit(source_page_height,

+                                       static_cast<int>(kPointsPerInch),

+                                       print_settings.dpi);

+

+    pp::Rect rect(width_in_pixels, height_in_pixels);

+    pages_to_print.push_back(PDFiumPage(this, page_number, rect, true));

+    FPDF_ClosePage(pdf_page);

+  }

+

+#if defined(OS_LINUX)

+  g_last_instance_id = client_->GetPluginInstance()->pp_instance();

+#endif

+

+  size_t i = 0;

+  for (; i < pages_to_print.size(); ++i) {

+    double source_page_width = source_page_sizes[i].first;

+    double source_page_height = source_page_sizes[i].second;

+

+    // Use temp_doc to compress image by saving PDF to buffer.

+    FPDF_DOCUMENT temp_doc = CreateSinglePageRasterPdf(source_page_width,

+                                                       source_page_height,

+                                                       print_settings,

+                                                       &pages_to_print[i]);

+

+    if (!temp_doc)

+      break;

+

+    pp::Buffer_Dev buffer = GetFlattenedPrintData(temp_doc);

+    FPDF_CloseDocument(temp_doc);

+

+    PDFiumMemBufferFileRead file_read(buffer.data(), buffer.size());

+    temp_doc = FPDF_LoadCustomDocument(&file_read, NULL);

+

+    FPDF_BOOL imported = FPDF_ImportPages(output_doc, temp_doc, "1", i);

+    FPDF_CloseDocument(temp_doc);

+    if (!imported)

+      break;

+  }

+

+  pp::Buffer_Dev buffer;

+  if (i == pages_to_print.size()) {

+    FPDF_CopyViewerPreferences(output_doc, doc_);

+    FitContentsToPrintableAreaIfRequired(output_doc, print_settings);

+    // Now flatten all the output pages.

+    buffer = GetFlattenedPrintData(output_doc);

+  }

+  FPDF_CloseDocument(output_doc);

+  return buffer;

+}

+

+pp::Buffer_Dev PDFiumEngine::GetFlattenedPrintData(const FPDF_DOCUMENT& doc) {

+  int page_count = FPDF_GetPageCount(doc);

+  bool flatten_succeeded = true;

+  for (int i = 0; i < page_count; ++i) {

+    FPDF_PAGE page = FPDF_LoadPage(doc, i);

+    DCHECK(page);

+    if (page) {

+      int flatten_ret = FPDFPage_Flatten(page, FLAT_PRINT);

+      FPDF_ClosePage(page);

+      if (flatten_ret == FLATTEN_FAIL) {

+        flatten_succeeded = false;

+        break;

+      }

+    } else {

+      flatten_succeeded = false;

+      break;

+    }

+  }

+  if (!flatten_succeeded) {

+    FPDF_CloseDocument(doc);

+    return pp::Buffer_Dev();

+  }

+

+  pp::Buffer_Dev buffer;

+  PDFiumMemBufferFileWrite output_file_write;

+  if (FPDF_SaveAsCopy(doc, &output_file_write, 0)) {

+    buffer = pp::Buffer_Dev(

+        client_->GetPluginInstance(), output_file_write.size());

+    if (!buffer.is_null()) {

+      memcpy(buffer.data(), output_file_write.buffer().c_str(),

+             output_file_write.size());

+    }

+  }

+  return buffer;

+}

+

+pp::Buffer_Dev PDFiumEngine::PrintPagesAsPDF(

+    const PP_PrintPageNumberRange_Dev* page_ranges, uint32_t page_range_count,

+    const PP_PrintSettings_Dev& print_settings) {

+  if (!page_range_count)

+    return pp::Buffer_Dev();

+

+  DCHECK(doc_);

+  FPDF_DOCUMENT output_doc = FPDF_CreateNewDocument();

+  if (!output_doc)

+    return pp::Buffer_Dev();

+

+  SaveSelectedFormForPrint();

+

+  std::string page_number_str;

+  for (uint32_t index = 0; index < page_range_count; ++index) {

+    if (!page_number_str.empty())

+      page_number_str.append(",");

+    page_number_str.append(

+        base::IntToString(page_ranges[index].first_page_number + 1));

+    if (page_ranges[index].first_page_number !=

+            page_ranges[index].last_page_number) {

+      page_number_str.append("-");

+      page_number_str.append(

+          base::IntToString(page_ranges[index].last_page_number + 1));

+    }

+  }

+

+  std::vector<uint32_t> page_numbers =

+      GetPageNumbersFromPrintPageNumberRange(page_ranges, page_range_count);

+  for (size_t i = 0; i < page_numbers.size(); ++i) {

+    uint32_t page_number = page_numbers[i];

+    pages_[page_number]->GetPage();

+    if (!IsPageVisible(page_numbers[i]))

+      pages_[page_number]->Unload();

+  }

+

+  FPDF_CopyViewerPreferences(output_doc, doc_);

+  if (!FPDF_ImportPages(output_doc, doc_, page_number_str.c_str(), 0)) {

+    FPDF_CloseDocument(output_doc);

+    return pp::Buffer_Dev();

+  }

+

+  FitContentsToPrintableAreaIfRequired(output_doc, print_settings);

+

+  // Now flatten all the output pages.

+  pp::Buffer_Dev buffer = GetFlattenedPrintData(output_doc);

+  FPDF_CloseDocument(output_doc);

+  return buffer;

+}

+

+void PDFiumEngine::FitContentsToPrintableAreaIfRequired(

+    const FPDF_DOCUMENT& doc, const PP_PrintSettings_Dev& print_settings) {

+  // Check to see if we need to fit pdf contents to printer paper size.

+  if (print_settings.print_scaling_option !=

+          PP_PRINTSCALINGOPTION_SOURCE_SIZE) {

+    int num_pages = FPDF_GetPageCount(doc);

+    // In-place transformation is more efficient than creating a new

+    // transformed document from the source document. Therefore, transform

+    // every page to fit the contents in the selected printer paper.

+    for (int i = 0; i < num_pages; ++i) {

+      FPDF_PAGE page = FPDF_LoadPage(doc, i);

+      TransformPDFPageForPrinting(page, print_settings);

+      FPDF_ClosePage(page);

+    }

+  }

+}

+

+void PDFiumEngine::SaveSelectedFormForPrint() {

+  FORM_ForceToKillFocus(form_);

+  client_->FormTextFieldFocusChange(false);

+}

+

+void PDFiumEngine::PrintEnd() {

+  FORM_DoDocumentAAction(form_, FPDFDOC_AACTION_DP);

+}

+

+PDFiumPage::Area PDFiumEngine::GetCharIndex(

+    const pp::MouseInputEvent& event, int* page_index,

+    int* char_index, PDFiumPage::LinkTarget* target) {

+  // First figure out which page this is in.

+  pp::Point mouse_point = event.GetPosition();

+  pp::Point point(

+      static_cast<int>((mouse_point.x() + position_.x()) / current_zoom_),

+      static_cast<int>((mouse_point.y() + position_.y()) / current_zoom_));

+  return GetCharIndex(point, page_index, char_index, target);

+}

+

+PDFiumPage::Area PDFiumEngine::GetCharIndex(

+    const pp::Point& point,

+    int* page_index,

+    int* char_index,

+    PDFiumPage::LinkTarget* target) {

+  int page = -1;

+  for (size_t i = 0; i < visible_pages_.size(); ++i) {

+    if (pages_[visible_pages_[i]]->rect().Contains(point)) {

+      page = visible_pages_[i];

+      break;

+    }

+  }

+  if (page == -1)

+    return PDFiumPage::NONSELECTABLE_AREA;

+

+  // If the page hasn't finished rendering, calling into the page sometimes

+  // leads to hangs.

+  for (size_t i = 0; i < progressive_paints_.size(); ++i) {

+    if (progressive_paints_[i].page_index == page)

+      return PDFiumPage::NONSELECTABLE_AREA;

+  }

+

+  *page_index = page;

+  return pages_[page]->GetCharIndex(point, current_rotation_, char_index,

+                                    target);

+}

+

+bool PDFiumEngine::OnMouseDown(const pp::MouseInputEvent& event) {

+  if (event.GetButton() != PP_INPUTEVENT_MOUSEBUTTON_LEFT)

+    return false;

+

+  SelectionChangeInvalidator selection_invalidator(this);

+  selection_.clear();

+

+  int page_index = -1;

+  int char_index = -1;

+  PDFiumPage::LinkTarget target;

+  PDFiumPage::Area area = GetCharIndex(event, &page_index,

+                                       &char_index, &target);

+  mouse_down_state_.Set(area, target);

+

+  // Decide whether to open link or not based on user action in mouse up and

+  // mouse move events.

+  if (area == PDFiumPage::WEBLINK_AREA)

+    return true;

+

+  if (area == PDFiumPage::DOCLINK_AREA) {

+    client_->ScrollToPage(target.page);

+    client_->FormTextFieldFocusChange(false);

+    return true;

+  }

+

+  if (page_index != -1) {

+    last_page_mouse_down_ = page_index;

+    double page_x, page_y;

+    pp::Point point = event.GetPosition();

+    DeviceToPage(page_index, point.x(), point.y(), &page_x, &page_y);

+

+    FORM_OnLButtonDown(form_, pages_[page_index]->GetPage(), 0, page_x, page_y);

+    int control = FPDPage_HasFormFieldAtPoint(

+        form_, pages_[page_index]->GetPage(), page_x, page_y);

+    if (control > FPDF_FORMFIELD_UNKNOWN) {  // returns -1 sometimes...

+#ifdef _TEST_XFA

+      client_->FormTextFieldFocusChange(control == FPDF_FORMFIELD_TEXTFIELD ||

+          control == FPDF_FORMFIELD_COMBOBOX ||

+		  control == FPDF_FORMFIELD_XFA);

+#else 

+		client_->FormTextFieldFocusChange(control == FPDF_FORMFIELD_TEXTFIELD ||

+			control == FPDF_FORMFIELD_COMBOBOX);

+#endif

+      return true;  // Return now before we get into the selection code.

+    }

+  }

+

+  client_->FormTextFieldFocusChange(false);

+

+  if (area != PDFiumPage::TEXT_AREA)

+    return true;  // Return true so WebKit doesn't do its own highlighting.

+

+  if (event.GetClickCount() == 1) {

+    OnSingleClick(page_index, char_index);

+  } else if (event.GetClickCount() == 2 ||

+             event.GetClickCount() == 3) {

+    OnMultipleClick(event.GetClickCount(), page_index, char_index);

+  }

+

+  return true;

+}

+

+void PDFiumEngine::OnSingleClick(int page_index, int char_index) {

+  selecting_ = true;

+  selection_.push_back(PDFiumRange(pages_[page_index], char_index, 0));

+}

+

+void PDFiumEngine::OnMultipleClick(int click_count,

+                                   int page_index,

+                                   int char_index) {

+  // It would be more efficient if the SDK could support finding a space, but

+  // now it doesn't.

+  int start_index = char_index;

+  do {

+    base::char16 cur = pages_[page_index]->GetCharAtIndex(start_index);

+    // For double click, we want to select one word so we look for whitespace

+    // boundaries.  For triple click, we want the whole line.

+    if (cur == '\n' || (click_count == 2 && (cur == ' ' || cur == '\t')))

+      break;

+  } while (--start_index >= 0);

+  if (start_index)

+    start_index++;

+

+  int end_index = char_index;

+  int total = pages_[page_index]->GetCharCount();

+  while (end_index++ <= total) {

+    base::char16 cur = pages_[page_index]->GetCharAtIndex(end_index);

+    if (cur == '\n' || (click_count == 2 && (cur == ' ' || cur == '\t')))

+      break;

+  }

+

+  selection_.push_back(PDFiumRange(

+      pages_[page_index], start_index, end_index - start_index));

+}

+

+bool PDFiumEngine::OnMouseUp(const pp::MouseInputEvent& event) {

+  if (event.GetButton() != PP_INPUTEVENT_MOUSEBUTTON_LEFT)

+    return false;

+

+  int page_index = -1;

+  int char_index = -1;

+  PDFiumPage::LinkTarget target;

+  PDFiumPage::Area area =

+      GetCharIndex(event, &page_index, &char_index, &target);

+

+  // Open link on mouse up for same link for which mouse down happened earlier.

+  if (mouse_down_state_.Matches(area, target)) {

+    if (area == PDFiumPage::WEBLINK_AREA) {

+      bool open_in_new_tab = !!(event.GetModifiers() & kDefaultKeyModifier);

+      client_->NavigateTo(target.url, open_in_new_tab);

+      client_->FormTextFieldFocusChange(false);

+      return true;

+    }

+  }

+

+  if (page_index != -1) {

+    double page_x, page_y;

+    pp::Point point = event.GetPosition();

+    DeviceToPage(page_index, point.x(), point.y(), &page_x, &page_y);

+    FORM_OnLButtonUp(

+        form_, pages_[page_index]->GetPage(), 0, page_x, page_y);

+  }

+

+  if (!selecting_)

+    return false;

+

+  selecting_ = false;

+  return true;

+}

+

+bool PDFiumEngine::OnMouseMove(const pp::MouseInputEvent& event) {

+  int page_index = -1;

+  int char_index = -1;

+  PDFiumPage::LinkTarget target;

+  PDFiumPage::Area area =

+      GetCharIndex(event, &page_index, &char_index, &target);

+

+  // Clear |mouse_down_state_| if mouse moves away from where the mouse down

+  // happened.

+  if (!mouse_down_state_.Matches(area, target))

+    mouse_down_state_.Reset();

+

+  if (!selecting_) {

+    PP_CursorType_Dev cursor;

+    switch (area) {

+      case PDFiumPage::TEXT_AREA:

+        cursor = PP_CURSORTYPE_IBEAM;

+        break;

+      case PDFiumPage::WEBLINK_AREA:

+      case PDFiumPage::DOCLINK_AREA:

+        cursor = PP_CURSORTYPE_HAND;

+        break;

+      case PDFiumPage::NONSELECTABLE_AREA:

+      default:

+        cursor = PP_CURSORTYPE_POINTER;

+        break;

+    }

+

+    if (page_index != -1) {

+      double page_x, page_y;

+      pp::Point point = event.GetPosition();

+      DeviceToPage(page_index, point.x(), point.y(), &page_x, &page_y);

+

+      FORM_OnMouseMove(form_, pages_[page_index]->GetPage(), 0, page_x, page_y);

+      int control = FPDPage_HasFormFieldAtPoint(

+          form_, pages_[page_index]->GetPage(), page_x, page_y);

+      switch (control) {

+        case FPDF_FORMFIELD_PUSHBUTTON:

+        case FPDF_FORMFIELD_CHECKBOX:

+        case FPDF_FORMFIELD_RADIOBUTTON:

+        case FPDF_FORMFIELD_COMBOBOX:

+        case FPDF_FORMFIELD_LISTBOX:

+          cursor = PP_CURSORTYPE_HAND;

+          break;

+        case FPDF_FORMFIELD_TEXTFIELD:

+          cursor = PP_CURSORTYPE_IBEAM;

+          break;

+        default:

+          break;

+      }

+    }

+

+    client_->UpdateCursor(cursor);

+    pp::Point point = event.GetPosition();

+    std::string url = GetLinkAtPosition(event.GetPosition());

+    if (url != link_under_cursor_) {

+      link_under_cursor_ = url;

+      pp::PDF::SetLinkUnderCursor(GetPluginInstance(), url.c_str());

+    }

+    // No need to swallow the event, since this might interfere with the

+    // scrollbars if the user is dragging them.

+    return false;

+  }

+

+  // We're selecting but right now we're not over text, so don't change the

+  // current selection.

+  if (area != PDFiumPage::TEXT_AREA && area != PDFiumPage::WEBLINK_AREA &&

+      area != PDFiumPage::DOCLINK_AREA) {

+    return false;

+  }

+

+  SelectionChangeInvalidator selection_invalidator(this);

+

+  // Check if the user has descreased their selection area and we need to remove

+  // pages from selection_.

+  for (size_t i = 0; i < selection_.size(); ++i) {

+    if (selection_[i].page_index() == page_index) {

+      // There should be no other pages after this.

+      selection_.erase(selection_.begin() + i + 1, selection_.end());

+      break;

+    }

+  }

+

+  if (selection_.size() == 0)

+    return false;

+

+  int last = selection_.size() - 1;

+  if (selection_[last].page_index() == page_index) {

+    // Selecting within a page.

+    int count;

+    if (char_index >= selection_[last].char_index()) {

+      // Selecting forward.

+      count = char_index - selection_[last].char_index() + 1;

+    } else {

+      count = char_index - selection_[last].char_index() - 1;

+    }

+    selection_[last].SetCharCount(count);

+  } else if (selection_[last].page_index() < page_index) {

+    // Selecting into the next page.

+

+    // First make sure that there are no gaps in selection, i.e. if mousedown on

+    // page one but we only get mousemove over page three, we want page two.

+    for (int i = selection_[last].page_index() + 1; i < page_index; ++i) {

+      selection_.push_back(PDFiumRange(pages_[i], 0,

+                           pages_[i]->GetCharCount()));

+    }

+

+    int count = pages_[selection_[last].page_index()]->GetCharCount();

+    selection_[last].SetCharCount(count - selection_[last].char_index());

+    selection_.push_back(PDFiumRange(pages_[page_index], 0, char_index));

+  } else {

+    // Selecting into the previous page.

+    selection_[last].SetCharCount(-selection_[last].char_index());

+

+    // First make sure that there are no gaps in selection, i.e. if mousedown on

+    // page three but we only get mousemove over page one, we want page two.

+    for (int i = selection_[last].page_index() - 1; i > page_index; --i) {

+      selection_.push_back(PDFiumRange(pages_[i], 0,

+                           pages_[i]->GetCharCount()));

+    }

+

+    int count = pages_[page_index]->GetCharCount();

+    selection_.push_back(

+        PDFiumRange(pages_[page_index], count, count - char_index));

+  }

+

+  return true;

+}

+

+bool PDFiumEngine::OnKeyDown(const pp::KeyboardInputEvent& event) {

+  if (last_page_mouse_down_ == -1)

+    return false;

+

+  bool rv = !!FORM_OnKeyDown(

+      form_, pages_[last_page_mouse_down_]->GetPage(),

+      event.GetKeyCode(), event.GetModifiers());

+

+  if (event.GetKeyCode() == ui::VKEY_BACK ||

+      event.GetKeyCode() == ui::VKEY_ESCAPE) {

+    // Chrome doesn't send char events for backspace or escape keys, see

+    // PlatformKeyboardEventBuilder::isCharacterKey() and

+    // http://chrome-corpsvn.mtv.corp.google.com/viewvc?view=rev&root=chrome&revision=31805

+    // for more information.  So just fake one since PDFium uses it.

+    std::string str;

+    str.push_back(event.GetKeyCode());

+    pp::KeyboardInputEvent synthesized(pp::KeyboardInputEvent(

+        client_->GetPluginInstance(),

+        PP_INPUTEVENT_TYPE_CHAR,

+        event.GetTimeStamp(),

+        event.GetModifiers(),

+        event.GetKeyCode(),

+        str));

+    OnChar(synthesized);

+  }

+

+  return rv;

+}

+

+bool PDFiumEngine::OnKeyUp(const pp::KeyboardInputEvent& event) {

+  if (last_page_mouse_down_ == -1)

+    return false;

+

+  return !!FORM_OnKeyUp(

+      form_, pages_[last_page_mouse_down_]->GetPage(),

+      event.GetKeyCode(), event.GetModifiers());

+}

+

+bool PDFiumEngine::OnChar(const pp::KeyboardInputEvent& event) {

+  if (last_page_mouse_down_ == -1)

+    return false;

+

+  base::string16 str = base::UTF8ToUTF16(event.GetCharacterText().AsString());

+  return !!FORM_OnChar(

+      form_, pages_[last_page_mouse_down_]->GetPage(),

+      str[0],

+      event.GetModifiers());

+}

+

+void PDFiumEngine::StartFind(const char* text, bool case_sensitive) {

+  // We can get a call to StartFind before we have any page information (i.e.

+  // before the first call to LoadDocument has happened). Handle this case.

+  if (pages_.empty())

+    return;

+

+  bool first_search = false;

+  int character_to_start_searching_from = 0;

+  if (current_find_text_ != text) {  // First time we search for this text.

+    first_search = true;

+    std::vector<PDFiumRange> old_selection = selection_;

+    StopFind();

+    current_find_text_ = text;

+

+    if (old_selection.empty()) {

+      // Start searching from the beginning of the document.

+      next_page_to_search_ = 0;

+      last_page_to_search_ = pages_.size() - 1;

+      last_character_index_to_search_ = -1;

+    } else {

+      // There's a current selection, so start from it.

+      next_page_to_search_ = old_selection[0].page_index();

+      last_character_index_to_search_ = old_selection[0].char_index();

+      character_to_start_searching_from = old_selection[0].char_index();

+      last_page_to_search_ = next_page_to_search_;

+    }

+  }

+

+  int current_page = next_page_to_search_;

+

+  if (pages_[current_page]->available()) {

+    base::string16 str = base::UTF8ToUTF16(text);

+    // Don't use PDFium to search for now, since it doesn't support unicode text.

+    // Leave the code for now to avoid bit-rot, in case it's fixed later.

+    if (0) {

+      SearchUsingPDFium(

+          str, case_sensitive, first_search, character_to_start_searching_from,

+          current_page);

+    } else {

+      SearchUsingICU(

+          str, case_sensitive, first_search, character_to_start_searching_from,

+          current_page);

+    }

+

+    if (!IsPageVisible(current_page))

+      pages_[current_page]->Unload();

+  }

+

+  if (next_page_to_search_ != last_page_to_search_ ||

+      (first_search && last_character_index_to_search_ != -1)) {

+    ++next_page_to_search_;

+  }

+

+  if (next_page_to_search_ == static_cast<int>(pages_.size()))

+    next_page_to_search_ = 0;

+  // If there's only one page in the document and we start searching midway,

+  // then we'll want to search the page one more time.

+  bool end_of_search =

+      next_page_to_search_ == last_page_to_search_ &&

+      // Only one page but didn't start midway.

+      ((pages_.size() == 1 && last_character_index_to_search_ == -1) ||

+       // Started midway, but only 1 page and we already looped around.

+       (pages_.size() == 1 && !first_search) ||

+       // Started midway, and we've just looped around.

+       (pages_.size() > 1 && current_page == next_page_to_search_));

+

+  if (end_of_search) {

+    // Send the final notification.

+    client_->NotifyNumberOfFindResultsChanged(find_results_.size(), true);

+

+    // When searching is complete, resume finding at a particular index.

+    if (resume_find_index_ != -1) {

+      current_find_index_ = resume_find_index_;

+      resume_find_index_ = -1;

+    }

+  } else {

+    pp::CompletionCallback callback =

+        find_factory_.NewCallback(&PDFiumEngine::ContinueFind);

+    pp::Module::Get()->core()->CallOnMainThread(

+        0, callback, case_sensitive ? 1 : 0);

+  }

+}

+

+void PDFiumEngine::SearchUsingPDFium(const base::string16& term,

+                                     bool case_sensitive,

+                                     bool first_search,

+                                     int character_to_start_searching_from,

+                                     int current_page) {

+  // Find all the matches in the current page.

+  unsigned long flags = case_sensitive ? FPDF_MATCHCASE : 0;

+  FPDF_SCHHANDLE find = FPDFText_FindStart(

+      pages_[current_page]->GetTextPage(),

+      reinterpret_cast<const unsigned short*>(term.c_str()),

+      flags, character_to_start_searching_from);

+

+  // Note: since we search one page at a time, we don't find matches across

+  // page boundaries.  We could do this manually ourself, but it seems low

+  // priority since Reader itself doesn't do it.

+  while (FPDFText_FindNext(find)) {

+    PDFiumRange result(pages_[current_page],

+                       FPDFText_GetSchResultIndex(find),

+                       FPDFText_GetSchCount(find));

+

+    if (!first_search &&

+        last_character_index_to_search_ != -1 &&

+        result.page_index() == last_page_to_search_ &&

+        result.char_index() >= last_character_index_to_search_) {

+      break;

+    }

+

+    AddFindResult(result);

+  }

+

+  FPDFText_FindClose(find);

+}

+

+void PDFiumEngine::SearchUsingICU(const base::string16& term,

+                                  bool case_sensitive,

+                                  bool first_search,

+                                  int character_to_start_searching_from,

+                                  int current_page) {

+  base::string16 page_text;

+  int text_length = pages_[current_page]->GetCharCount();

+  if (character_to_start_searching_from) {

+    text_length -= character_to_start_searching_from;

+  } else if (!first_search &&

+             last_character_index_to_search_ != -1 &&

+             current_page == last_page_to_search_) {

+    text_length = last_character_index_to_search_;

+  }

+  if (text_length <= 0)

+    return;

+  unsigned short* data =

+      reinterpret_cast<unsigned short*>(WriteInto(&page_text, text_length + 1));

+  FPDFText_GetText(pages_[current_page]->GetTextPage(),

+                   character_to_start_searching_from,

+                   text_length,

+                   data);

+  std::vector<PDFEngine::Client::SearchStringResult> results;

+  client_->SearchString(

+      page_text.c_str(), term.c_str(), case_sensitive, &results);

+  for (size_t i = 0; i < results.size(); ++i) {

+    // Need to map the indexes from the page text, which may have generated

+    // characters like space etc, to character indices from the page.

+    int temp_start = results[i].start_index + character_to_start_searching_from;

+    int start = FPDFText_GetCharIndexFromTextIndex(

+        pages_[current_page]->GetTextPage(), temp_start);

+    int end = FPDFText_GetCharIndexFromTextIndex(

+        pages_[current_page]->GetTextPage(),

+        temp_start + results[i].length);

+    AddFindResult(PDFiumRange(pages_[current_page], start, end - start));

+  }

+}

+

+void PDFiumEngine::AddFindResult(const PDFiumRange& result) {

+  // Figure out where to insert the new location, since we could have

+  // started searching midway and now we wrapped.

+  size_t i;

+  int page_index = result.page_index();

+  int char_index = result.char_index();

+  for (i = 0; i < find_results_.size(); ++i) {

+    if (find_results_[i].page_index() > page_index ||

+        (find_results_[i].page_index() == page_index &&

+         find_results_[i].char_index() > char_index)) {

+      break;

+    }

+  }

+  find_results_.insert(find_results_.begin() + i, result);

+  UpdateTickMarks();

+

+  if (current_find_index_ == -1 && resume_find_index_ == -1) {

+    // Select the first match.

+    SelectFindResult(true);

+  } else if (static_cast<int>(i) <= current_find_index_) {

+    // Update the current match index

+    current_find_index_++;

+    client_->NotifySelectedFindResultChanged(current_find_index_);

+  }

+  client_->NotifyNumberOfFindResultsChanged(find_results_.size(), false);

+}

+

+bool PDFiumEngine::SelectFindResult(bool forward) {

+  if (find_results_.empty()) {

+    NOTREACHED();

+    return false;

+  }

+

+  SelectionChangeInvalidator selection_invalidator(this);

+

+  // Move back/forward through the search locations we previously found.

+  if (forward) {

+    if (++current_find_index_ == static_cast<int>(find_results_.size()))

+      current_find_index_ = 0;

+  } else {

+    if (--current_find_index_ < 0) {

+      current_find_index_ = find_results_.size() - 1;

+    }

+  }

+

+  // Update the selection before telling the client to scroll, since it could

+  // paint then.

+  selection_.clear();

+  selection_.push_back(find_results_[current_find_index_]);

+

+  // If the result is not in view, scroll to it.

+  size_t i;

+  pp::Rect bounding_rect;

+  pp::Rect visible_rect = GetVisibleRect();

+  // Use zoom of 1.0 since visible_rect is without zoom.

+  std::vector<pp::Rect> rects = find_results_[current_find_index_].

+      GetScreenRects(pp::Point(), 1.0, current_rotation_);

+  for (i = 0; i < rects.size(); ++i)

+    bounding_rect = bounding_rect.Union(rects[i]);

+  if (!visible_rect.Contains(bounding_rect)) {

+    pp::Point center = bounding_rect.CenterPoint();

+    // Make the page centered.

+    int new_y = static_cast<int>(center.y() * current_zoom_) -

+                static_cast<int>(visible_rect.height() * current_zoom_ / 2);

+    if (new_y < 0)

+      new_y = 0;

+    client_->ScrollToY(new_y);

+

+    // Only move horizontally if it's not visible.

+    if (center.x() < visible_rect.x() || center.x() > visible_rect.right()) {

+      int new_x = static_cast<int>(center.x()  * current_zoom_) -

+                  static_cast<int>(visible_rect.width() * current_zoom_ / 2);

+      if (new_x < 0)

+        new_x = 0;

+      client_->ScrollToX(new_x);

+    }

+  }

+

+  client_->NotifySelectedFindResultChanged(current_find_index_);

+

+  return true;

+}

+

+void PDFiumEngine::StopFind() {

+  SelectionChangeInvalidator selection_invalidator(this);

+

+  selection_.clear();

+  selecting_ = false;

+  find_results_.clear();

+  next_page_to_search_ = -1;

+  last_page_to_search_ = -1;

+  last_character_index_to_search_ = -1;

+  current_find_index_ = -1;

+  current_find_text_.clear();

+  UpdateTickMarks();

+  find_factory_.CancelAll();

+}

+

+void PDFiumEngine::UpdateTickMarks() {

+  std::vector<pp::Rect> tickmarks;

+  for (size_t i = 0; i < find_results_.size(); ++i) {

+    pp::Rect rect;

+    // Always use an origin of 0,0 since scroll positions don't affect tickmark.

+    std::vector<pp::Rect> rects = find_results_[i].GetScreenRects(

+      pp::Point(0, 0), current_zoom_, current_rotation_);

+    for (size_t j = 0; j < rects.size(); ++j)

+      rect = rect.Union(rects[j]);

+    tickmarks.push_back(rect);

+  }

+

+  client_->UpdateTickMarks(tickmarks);

+}

+

+void PDFiumEngine::ZoomUpdated(double new_zoom_level) {

+  CancelPaints();

+

+  current_zoom_ = new_zoom_level;

+

+  CalculateVisiblePages();

+  UpdateTickMarks();

+}

+

+void PDFiumEngine::RotateClockwise() {

+  current_rotation_ = (current_rotation_ + 1) % 4;

+

+  // Store the current find index so that we can resume finding at that

+  // particular index after we have recomputed the find results.

+  std::string current_find_text = current_find_text_;

+  resume_find_index_ = current_find_index_;

+

+  InvalidateAllPages();

+

+  if (!current_find_text.empty())

+    StartFind(current_find_text.c_str(), false);

+}

+

+void PDFiumEngine::RotateCounterclockwise() {

+  current_rotation_ = (current_rotation_ - 1) % 4;

+

+  // Store the current find index so that we can resume finding at that

+  // particular index after we have recomputed the find results.

+  std::string current_find_text = current_find_text_;

+  resume_find_index_ = current_find_index_;

+

+  InvalidateAllPages();

+

+  if (!current_find_text.empty())

+    StartFind(current_find_text.c_str(), false);

+}

+

+void PDFiumEngine::InvalidateAllPages() {

+  CancelPaints();

+  StopFind();

+  LoadPageInfo(true);

+  client_->Invalidate(pp::Rect(plugin_size_));

+}

+

+std::string PDFiumEngine::GetSelectedText() {

+  base::string16 result;

+  for (size_t i = 0; i < selection_.size(); ++i) {

+    if (i > 0 &&

+        selection_[i - 1].page_index() > selection_[i].page_index()) {

+      result = selection_[i].GetText() + result;

+    } else {

+      result.append(selection_[i].GetText());

+    }

+  }

+

+  FormatStringWithHyphens(&result);

+  FormatStringForOS(&result);

+  return base::UTF16ToUTF8(result);

+}

+

+std::string PDFiumEngine::GetLinkAtPosition(const pp::Point& point) {

+  int temp;

+  PDFiumPage::LinkTarget target;

+  pp::Point point_in_page(

+      static_cast<int>((point.x() + position_.x()) / current_zoom_),

+      static_cast<int>((point.y() + position_.y()) / current_zoom_));

+  PDFiumPage::Area area = GetCharIndex(point_in_page, &temp, &temp, &target);

+  if (area == PDFiumPage::WEBLINK_AREA)

+    return target.url;

+  return std::string();

+}

+

+bool PDFiumEngine::IsSelecting() {

+  return selecting_;

+}

+

+bool PDFiumEngine::HasPermission(DocumentPermission permission) const {

+  switch (permission) {

+    case PERMISSION_COPY:

+      return (permissions_ & kPDFPermissionCopyMask) != 0;

+    case PERMISSION_COPY_ACCESSIBLE:

+      return (permissions_ & kPDFPermissionCopyAccessibleMask) != 0;

+    case PERMISSION_PRINT_LOW_QUALITY:

+      return (permissions_ & kPDFPermissionPrintLowQualityMask) != 0;

+    case PERMISSION_PRINT_HIGH_QUALITY:

+      return (permissions_ & kPDFPermissionPrintLowQualityMask) != 0 &&

+             (permissions_ & kPDFPermissionPrintHighQualityMask) != 0;

+    default:

+      return true;

+  };

+}

+

+void PDFiumEngine::SelectAll() {

+  SelectionChangeInvalidator selection_invalidator(this);

+

+  selection_.clear();

+  for (size_t i = 0; i < pages_.size(); ++i)

+    if (pages_[i]->available()) {

+      selection_.push_back(PDFiumRange(pages_[i], 0,

+                           pages_[i]->GetCharCount()));

+    }

+}

+

+int PDFiumEngine::GetNumberOfPages() {

+  return pages_.size();

+}

+

+int PDFiumEngine::GetNamedDestinationPage(const std::string& destination) {

+  // Look for the destination.

+  FPDF_DEST dest = FPDF_GetNamedDestByName(doc_, destination.c_str());

+  if (!dest) {

+    // Look for a bookmark with the same name.

+    base::string16 destination_wide = base::UTF8ToUTF16(destination);

+    FPDF_WIDESTRING destination_pdf_wide =

+        reinterpret_cast<FPDF_WIDESTRING>(destination_wide.c_str());

+    FPDF_BOOKMARK bookmark = FPDFBookmark_Find(doc_, destination_pdf_wide);

+    if (!bookmark)

+      return -1;

+    dest = FPDFBookmark_GetDest(doc_, bookmark);

+  }

+  return dest ? FPDFDest_GetPageIndex(doc_, dest) : -1;

+}

+

+int PDFiumEngine::GetFirstVisiblePage() {

+  CalculateVisiblePages();

+  return first_visible_page_;

+}

+

+int PDFiumEngine::GetMostVisiblePage() {

+  CalculateVisiblePages();

+  return most_visible_page_;

+}

+

+pp::Rect PDFiumEngine::GetPageRect(int index) {

+  pp::Rect rc(pages_[index]->rect());

+  rc.Inset(-kPageShadowLeft, -kPageShadowTop,

+           -kPageShadowRight, -kPageShadowBottom);

+  return rc;

+}

+

+pp::Rect PDFiumEngine::GetPageContentsRect(int index) {

+  return GetScreenRect(pages_[index]->rect());

+}

+

+void PDFiumEngine::PaintThumbnail(pp::ImageData* image_data, int index) {

+  FPDF_BITMAP bitmap = FPDFBitmap_CreateEx(

+      image_data->size().width(), image_data->size().height(),

+      FPDFBitmap_BGRx, image_data->data(), image_data->stride());

+

+  if (pages_[index]->available()) {

+    FPDFBitmap_FillRect(bitmap, 0, 0, image_data->size().width(),

+                        image_data->size().height(), 0xFFFFFFFF);

+

+    FPDF_RenderPageBitmap(

+        bitmap, pages_[index]->GetPage(), 0, 0, image_data->size().width(),

+        image_data->size().height(), 0, GetRenderingFlags());

+  } else {

+    FPDFBitmap_FillRect(bitmap, 0, 0, image_data->size().width(),

+                        image_data->size().height(), kPendingPageColor);

+  }

+

+  FPDFBitmap_Destroy(bitmap);

+}

+

+void PDFiumEngine::SetGrayscale(bool grayscale) {

+  render_grayscale_ = grayscale;

+}

+

+void PDFiumEngine::OnCallback(int id) {

+  if (!timers_.count(id))

+    return;

+

+  timers_[id].second(id);

+  if (timers_.count(id))  // The callback might delete the timer.

+    client_->ScheduleCallback(id, timers_[id].first);

+}

+

+std::string PDFiumEngine::GetPageAsJSON(int index) {

+  if (!(HasPermission(PERMISSION_COPY) ||

+        HasPermission(PERMISSION_COPY_ACCESSIBLE))) {

+    return "{}";

+  }

+

+  if (index < 0 || static_cast<size_t>(index) > pages_.size() - 1)

+    return "{}";

+

+  scoped_ptr<base::Value> node(

+      pages_[index]->GetAccessibleContentAsValue(current_rotation_));

+  std::string page_json;

+  base::JSONWriter::Write(node.get(), &page_json);

+  return page_json;

+}

+

+bool PDFiumEngine::GetPrintScaling() {

+  return !!FPDF_VIEWERREF_GetPrintScaling(doc_);

+}

+

+void PDFiumEngine::AppendBlankPages(int num_pages) {

+  DCHECK(num_pages != 0);

+

+  if (!doc_)

+    return;

+

+  selection_.clear();

+  pending_pages_.clear();

+

+  // Delete all pages except the first one.

+  while (pages_.size() > 1) {

+    delete pages_.back();

+    pages_.pop_back();

+    FPDFPage_Delete(doc_, pages_.size());

+  }

+

+  // Calculate document size and all page sizes.

+  std::vector<pp::Rect> page_rects;

+  pp::Size page_size = GetPageSize(0);

+  page_size.Enlarge(kPageShadowLeft + kPageShadowRight,

+                    kPageShadowTop + kPageShadowBottom);

+  pp::Size old_document_size = document_size_;

+  document_size_ = pp::Size(page_size.width(), 0);

+  for (int i = 0; i < num_pages; ++i) {

+    if (i != 0) {

+      // Add space for horizontal separator.

+      document_size_.Enlarge(0, kPageSeparatorThickness);

+    }

+

+    pp::Rect rect(pp::Point(0, document_size_.height()), page_size);

+    page_rects.push_back(rect);

+

+    document_size_.Enlarge(0, page_size.height());

+  }

+

+  // Create blank pages.

+  for (int i = 1; i < num_pages; ++i) {

+    pp::Rect page_rect(page_rects[i]);

+    page_rect.Inset(kPageShadowLeft, kPageShadowTop,

+                    kPageShadowRight, kPageShadowBottom);

+    double width_in_points =

+        page_rect.width() * kPointsPerInch / kPixelsPerInch;

+    double height_in_points =

+        page_rect.height() * kPointsPerInch / kPixelsPerInch;

+    FPDFPage_New(doc_, i, width_in_points, height_in_points);

+    pages_.push_back(new PDFiumPage(this, i, page_rect, true));

+  }

+

+  CalculateVisiblePages();

+  if (document_size_ != old_document_size)

+    client_->DocumentSizeUpdated(document_size_);

+}

+

+void PDFiumEngine::LoadDocument() {

+  // Check if the document is ready for loading. If it isn't just bail for now,

+  // we will call LoadDocument() again later.

+  if (!doc_ && !doc_loader_.IsDocumentComplete() &&

+      !FPDFAvail_IsDocAvail(fpdf_availability_, &download_hints_)) {

+    return;

+  }

+

+  // If we're in the middle of getting a password, just return. We will retry

+  // loading the document after we get the password anyway.

+  if (getting_password_)

+    return;

+

+  ScopedUnsupportedFeature scoped_unsupported_feature(this);

+  bool needs_password = false;

+  if (TryLoadingDoc(false, std::string(), &needs_password)) {

+    ContinueLoadingDocument(false, std::string());

+    return;

+  }

+  if (needs_password)

+    GetPasswordAndLoad();

+  else

+    client_->DocumentLoadFailed();

+}

+

+bool PDFiumEngine::TryLoadingDoc(bool with_password,

+                                 const std::string& password,

+                                 bool* needs_password) {

+  *needs_password = false;

+  if (doc_)

+    return true;

+

+  const char* password_cstr = NULL;

+  if (with_password) {

+    password_cstr = password.c_str();

+    password_tries_remaining_--;

+  }

+  if (doc_loader_.IsDocumentComplete())

+    doc_ = FPDF_LoadCustomDocument(&file_access_, password_cstr);

+  else

+    doc_ = FPDFAvail_GetDocument(fpdf_availability_, password_cstr);

+

+  if (!doc_ && FPDF_GetLastError() == FPDF_ERR_PASSWORD)

+    *needs_password = true;

+

+  return doc_ != NULL;

+}

+

+void PDFiumEngine::GetPasswordAndLoad() {

+  getting_password_ = true;

+  DCHECK(!doc_ && FPDF_GetLastError() == FPDF_ERR_PASSWORD);

+  client_->GetDocumentPassword(password_factory_.NewCallbackWithOutput(

+      &PDFiumEngine::OnGetPasswordComplete));

+}

+

+void PDFiumEngine::OnGetPasswordComplete(int32_t result,

+                                         const pp::Var& password) {

+  getting_password_ = false;

+

+  bool password_given = false;

+  std::string password_text;

+  if (result == PP_OK && password.is_string()) {

+    password_text = password.AsString();

+    if (!password_text.empty())

+      password_given = true;

+  }

+  ContinueLoadingDocument(password_given, password_text);

+}

+

+void PDFiumEngine::ContinueLoadingDocument(

+    bool has_password,

+    const std::string& password) {

+  ScopedUnsupportedFeature scoped_unsupported_feature(this);

+

+  bool needs_password = false;

+  bool loaded = TryLoadingDoc(has_password, password, &needs_password);

+  bool password_incorrect = !loaded && has_password && needs_password;

+  if (password_incorrect && password_tries_remaining_ > 0) {

+    GetPasswordAndLoad();

+    return;

+  }

+

+  if (!doc_) {

+    client_->DocumentLoadFailed();

+    return;

+  }

+

+  if (FPDFDoc_GetPageMode(doc_) == PAGEMODE_USEOUTLINES)

+    client_->DocumentHasUnsupportedFeature("Bookmarks");

+

+  permissions_ = FPDF_GetDocPermissions(doc_);

+

+  if (!form_) {

+    // Only returns 0 when data isn't available.  If form data is downloaded, or

+    // if this isn't a form, returns positive values.

+    if (!doc_loader_.IsDocumentComplete() &&

+        !FPDFAvail_IsFormAvail(fpdf_availability_, &download_hints_)) {

+      return;

+    }

+

+    form_ = FPDFDOC_InitFormFillEnviroument(

+        doc_, static_cast<FPDF_FORMFILLINFO*>(this));

+#ifdef _TEST_XFA

+	FPDF_LoadXFA(doc_);

+#endif

+

+    FPDF_SetFormFieldHighlightColor(form_, 0, kFormHighlightColor);

+    FPDF_SetFormFieldHighlightAlpha(form_, kFormHighlightAlpha);

+  }

+

+  if (!doc_loader_.IsDocumentComplete()) {

+    // Check if the first page is available.  In a linearized PDF, that is not

+    // always page 0.  Doing this gives us the default page size, since when the

+    // document is available, the first page is available as well.

+    CheckPageAvailable(FPDFAvail_GetFirstPageNum(doc_), &pending_pages_);

+  }

+

+  LoadPageInfo(false);

+

+  if (doc_loader_.IsDocumentComplete())

+    FinishLoadingDocument();

+}

+

+void PDFiumEngine::LoadPageInfo(bool reload) {

+  pending_pages_.clear();

+  pp::Size old_document_size = document_size_;

+  document_size_ = pp::Size();

+  std::vector<pp::Rect> page_rects;

+  int page_count = FPDF_GetPageCount(doc_);

+  bool doc_complete = doc_loader_.IsDocumentComplete();

+  for (int i = 0; i < page_count; ++i) {

+    if (i != 0) {

+      // Add space for horizontal separator.

+      document_size_.Enlarge(0, kPageSeparatorThickness);

+    }

+

+    // Get page availability. If reload==false, and document is not loaded yet

+    // (we are using async loading) - mark all pages as unavailable.

+    // If reload==true (we have document constructed already), get page

+    // availability flag from already existing PDFiumPage class.

+    bool page_available = reload ? pages_[i]->available() : doc_complete;

+

+    pp::Size size = page_available ? GetPageSize(i) : default_page_size_;

+    size.Enlarge(kPageShadowLeft + kPageShadowRight,

+                 kPageShadowTop + kPageShadowBottom);

+    pp::Rect rect(pp::Point(0, document_size_.height()), size);

+    page_rects.push_back(rect);

+

+    if (size.width() > document_size_.width())

+      document_size_.set_width(size.width());

+

+    document_size_.Enlarge(0, size.height());

+  }

+

+  for (int i = 0; i < page_count; ++i) {

+    // Center pages relative to the entire document.

+    page_rects[i].set_x((document_size_.width() - page_rects[i].width()) / 2);

+    pp::Rect page_rect(page_rects[i]);

+    page_rect.Inset(kPageShadowLeft, kPageShadowTop,

+                    kPageShadowRight, kPageShadowBottom);

+    if (reload) {

+      pages_[i]->set_rect(page_rect);

+    } else {

+      pages_.push_back(new PDFiumPage(this, i, page_rect, doc_complete));

+    }

+  }

+

+  CalculateVisiblePages();

+  if (document_size_ != old_document_size)

+    client_->DocumentSizeUpdated(document_size_);

+}

+

+void PDFiumEngine::CalculateVisiblePages() {

+  // Clear pending requests queue, since it may contain requests to the pages

+  // that are already invisible (after scrolling for example).

+  pending_pages_.clear();

+  doc_loader_.ClearPendingRequests();

+

+  visible_pages_.clear();

+  pp::Rect visible_rect(plugin_size_);

+  for (size_t i = 0; i < pages_.size(); ++i) {

+    // Check an entire PageScreenRect, since we might need to repaint side

+    // borders and shadows even if the page itself is not visible.

+    // For example, when user use pdf with different page sizes and zoomed in

+    // outside page area.

+    if (visible_rect.Intersects(GetPageScreenRect(i))) {

+      visible_pages_.push_back(i);

+      CheckPageAvailable(i, &pending_pages_);

+    } else {

+      // Need to unload pages when we're not using them, since some PDFs use a

+      // lot of memory.  See http://crbug.com/48791

+      if (defer_page_unload_) {

+        deferred_page_unloads_.push_back(i);

+      } else {

+        pages_[i]->Unload();

+      }

+

+      // If the last mouse down was on a page that's no longer visible, reset

+      // that variable so that we don't send keyboard events to it (the focus

+      // will be lost when the page is first closed anyways).

+      if (static_cast<int>(i) == last_page_mouse_down_)

+        last_page_mouse_down_ = -1;

+    }

+  }

+

+  // Any pending highlighting of form fields will be invalid since these are in

+  // screen coordinates.

+  form_highlights_.clear();

+

+  if (visible_pages_.size() == 0)

+    first_visible_page_ = -1;

+  else

+    first_visible_page_ = visible_pages_.front();

+

+  int most_visible_page = first_visible_page_;

+  // Check if the next page is more visible than the first one.

+  if (most_visible_page != -1 &&

+      pages_.size() > 0 &&

+      most_visible_page < static_cast<int>(pages_.size()) - 1) {

+    pp::Rect rc_first =

+        visible_rect.Intersect(GetPageScreenRect(most_visible_page));

+    pp::Rect rc_next =

+        visible_rect.Intersect(GetPageScreenRect(most_visible_page + 1));

+    if (rc_next.height() > rc_first.height())

+      most_visible_page++;

+  }

+

+  SetCurrentPage(most_visible_page);

+}

+

+bool PDFiumEngine::IsPageVisible(int index) const {

+  for (size_t i = 0; i < visible_pages_.size(); ++i) {

+    if (visible_pages_[i] == index)

+      return true;

+  }

+

+  return false;

+}

+

+bool PDFiumEngine::CheckPageAvailable(int index, std::vector<int>* pending) {

+  if (!doc_ || !form_)

+    return false;

+

+  if (static_cast<int>(pages_.size()) > index && pages_[index]->available())

+    return true;

+

+  if (!FPDFAvail_IsPageAvail(fpdf_availability_, index, &download_hints_)) {

+    size_t j;

+    for (j = 0; j < pending->size(); ++j) {

+      if ((*pending)[j] == index)

+        break;

+    }

+

+    if (j == pending->size())

+      pending->push_back(index);

+    return false;

+  }

+

+  if (static_cast<int>(pages_.size()) > index)

+    pages_[index]->set_available(true);

+  if (!default_page_size_.GetArea())

+    default_page_size_ = GetPageSize(index);

+  return true;

+}

+

+pp::Size PDFiumEngine::GetPageSize(int index) {

+  pp::Size size;

+  double width_in_points = 0;

+  double height_in_points = 0;

+  int rv = FPDF_GetPageSizeByIndex(

+      doc_, index, &width_in_points, &height_in_points);

+

+  if (rv) {

+    int width_in_pixels = static_cast<int>(

+        width_in_points * kPixelsPerInch / kPointsPerInch);

+    int height_in_pixels = static_cast<int>(

+        height_in_points * kPixelsPerInch / kPointsPerInch);

+    if (current_rotation_ % 2 == 1)

+      std::swap(width_in_pixels, height_in_pixels);

+    size = pp::Size(width_in_pixels, height_in_pixels);

+  }

+  return size;

+}

+

+int PDFiumEngine::StartPaint(int page_index, const pp::Rect& dirty) {

+  // For the first time we hit paint, do nothing and just record the paint for

+  // the next callback.  This keeps the UI responsive in case the user is doing

+  // a lot of scrolling.

+  ProgressivePaint progressive;

+  progressive.rect = dirty;

+  progressive.page_index = page_index;

+  progressive.bitmap = NULL;

+  progressive.painted_ = false;

+  progressive_paints_.push_back(progressive);

+  return progressive_paints_.size() - 1;

+}

+

+bool PDFiumEngine::ContinuePaint(int progressive_index,

+                                 pp::ImageData* image_data) {

+#if defined(OS_LINUX)

+  g_last_instance_id = client_->GetPluginInstance()->pp_instance();

+#endif

+

+  int rv;

+  int page_index = progressive_paints_[progressive_index].page_index;

+  last_progressive_start_time_ = base::Time::Now();

+  if (progressive_paints_[progressive_index].bitmap) {

+    rv = FPDF_RenderPage_Continue(

+        pages_[page_index]->GetPage(), static_cast<IFSDK_PAUSE*>(this));

+  } else {

+    pp::Rect dirty = progressive_paints_[progressive_index].rect;

+    progressive_paints_[progressive_index].bitmap = CreateBitmap(dirty,

+                                                                 image_data);

+    int start_x, start_y, size_x, size_y;

+    GetPDFiumRect(

+        page_index, dirty, &start_x, &start_y, &size_x, &size_y);

+    FPDFBitmap_FillRect(progressive_paints_[progressive_index].bitmap, start_x,

+                        start_y, size_x, size_y, 0xFFFFFFFF);

+    rv = FPDF_RenderPageBitmap_Start(

+        progressive_paints_[progressive_index].bitmap,

+        pages_[page_index]->GetPage(), start_x, start_y, size_x, size_y,

+        current_rotation_,

+        GetRenderingFlags(), static_cast<IFSDK_PAUSE*>(this));

+  }

+  return rv != FPDF_RENDER_TOBECOUNTINUED;

+}

+

+void PDFiumEngine::FinishPaint(int progressive_index,

+                               pp::ImageData* image_data) {

+  int page_index = progressive_paints_[progressive_index].page_index;

+  pp::Rect dirty_in_screen = progressive_paints_[progressive_index].rect;

+  FPDF_BITMAP bitmap = progressive_paints_[progressive_index].bitmap;

+  int start_x, start_y, size_x, size_y;

+  GetPDFiumRect(

+      page_index, dirty_in_screen, &start_x, &start_y, &size_x, &size_y);

+

+  // Draw the forms.

+  FPDF_FFLDraw(

+      form_, bitmap, pages_[page_index]->GetPage(), start_x, start_y, size_x,

+      size_y, current_rotation_, GetRenderingFlags());

+

+  FillPageSides(progressive_index);

+

+  // Paint the page shadows.

+  PaintPageShadow(progressive_index, image_data);

+

+  DrawSelections(progressive_index, image_data);

+

+  FPDF_RenderPage_Close(pages_[page_index]->GetPage());

+  FPDFBitmap_Destroy(bitmap);

+  progressive_paints_.erase(progressive_paints_.begin() + progressive_index);

+

+  client_->DocumentPaintOccurred();

+}

+

+void PDFiumEngine::CancelPaints() {

+  for (size_t i = 0; i < progressive_paints_.size(); ++i) {

+    FPDF_RenderPage_Close(pages_[progressive_paints_[i].page_index]->GetPage());

+    FPDFBitmap_Destroy(progressive_paints_[i].bitmap);

+  }

+  progressive_paints_.clear();

+}

+

+void PDFiumEngine::FillPageSides(int progressive_index) {

+  int page_index = progressive_paints_[progressive_index].page_index;

+  pp::Rect dirty_in_screen = progressive_paints_[progressive_index].rect;

+  FPDF_BITMAP bitmap = progressive_paints_[progressive_index].bitmap;

+

+  pp::Rect page_rect = pages_[page_index]->rect();

+  if (page_rect.x() > 0) {

+    pp::Rect left(0,

+                  page_rect.y() - kPageShadowTop,

+                  page_rect.x() - kPageShadowLeft,

+                  page_rect.height() + kPageShadowTop +

+                      kPageShadowBottom + kPageSeparatorThickness);

+    left = GetScreenRect(left).Intersect(dirty_in_screen);

+

+    FPDFBitmap_FillRect(bitmap, left.x() - dirty_in_screen.x(),

+                        left.y() - dirty_in_screen.y(), left.width(),

+                        left.height(), kBackgroundColor);

+  }

+

+  if (page_rect.right() < document_size_.width()) {

+    pp::Rect right(page_rect.right() + kPageShadowRight,

+                   page_rect.y() - kPageShadowTop,

+                   document_size_.width() - page_rect.right() -

+                      kPageShadowRight,

+                   page_rect.height() + kPageShadowTop +

+                       kPageShadowBottom + kPageSeparatorThickness);

+    right = GetScreenRect(right).Intersect(dirty_in_screen);

+

+    FPDFBitmap_FillRect(bitmap, right.x() - dirty_in_screen.x(),

+                        right.y() - dirty_in_screen.y(), right.width(),

+                        right.height(), kBackgroundColor);

+  }

+

+  // Paint separator.

+  pp::Rect bottom(page_rect.x() - kPageShadowLeft,

+                  page_rect.bottom() + kPageShadowBottom,

+                  page_rect.width() + kPageShadowLeft + kPageShadowRight,

+                  kPageSeparatorThickness);

+  bottom = GetScreenRect(bottom).Intersect(dirty_in_screen);

+

+  FPDFBitmap_FillRect(bitmap, bottom.x() - dirty_in_screen.x(),

+                      bottom.y() - dirty_in_screen.y(), bottom.width(),

+                      bottom.height(), kBackgroundColor);

+}

+

+void PDFiumEngine::PaintPageShadow(int progressive_index,

+                                   pp::ImageData* image_data) {

+  int page_index = progressive_paints_[progressive_index].page_index;

+  pp::Rect dirty_in_screen = progressive_paints_[progressive_index].rect;

+  pp::Rect page_rect = pages_[page_index]->rect();

+  pp::Rect shadow_rect(page_rect);

+  shadow_rect.Inset(-kPageShadowLeft, -kPageShadowTop,

+                    -kPageShadowRight, -kPageShadowBottom);

+

+  // Due to the rounding errors of the GetScreenRect it is possible to get

+  // different size shadows on the left and right sides even they are defined

+  // the same. To fix this issue let's calculate shadow rect and then shrink

+  // it by the size of the shadows.

+  shadow_rect = GetScreenRect(shadow_rect);

+  page_rect = shadow_rect;

+

+  page_rect.Inset(static_cast<int>(ceil(kPageShadowLeft * current_zoom_)),

+                  static_cast<int>(ceil(kPageShadowTop * current_zoom_)),

+                  static_cast<int>(ceil(kPageShadowRight * current_zoom_)),

+                  static_cast<int>(ceil(kPageShadowBottom * current_zoom_)));

+

+  DrawPageShadow(page_rect, shadow_rect, dirty_in_screen, image_data);

+}

+

+void PDFiumEngine::DrawSelections(int progressive_index,

+                                  pp::ImageData* image_data) {

+  int page_index = progressive_paints_[progressive_index].page_index;

+  pp::Rect dirty_in_screen = progressive_paints_[progressive_index].rect;

+

+  void* region = NULL;

+  int stride;

+  GetRegion(dirty_in_screen.point(), image_data, &region, &stride);

+

+  std::vector<pp::Rect> highlighted_rects;

+  pp::Rect visible_rect = GetVisibleRect();

+  for (size_t k = 0; k < selection_.size(); ++k) {

+    if (selection_[k].page_index() != page_index)

+      continue;

+    std::vector<pp::Rect> rects = selection_[k].GetScreenRects(

+        visible_rect.point(), current_zoom_, current_rotation_);

+    for (size_t j = 0; j < rects.size(); ++j) {

+      pp::Rect visible_selection = rects[j].Intersect(dirty_in_screen);

+      if (visible_selection.IsEmpty())

+        continue;

+

+      visible_selection.Offset(

+          -dirty_in_screen.point().x(), -dirty_in_screen.point().y());

+      Highlight(region, stride, visible_selection, &highlighted_rects);

+    }

+  }

+

+  for (size_t k = 0; k < form_highlights_.size(); ++k) {

+    pp::Rect visible_selection = form_highlights_[k].Intersect(dirty_in_screen);

+      if (visible_selection.IsEmpty())

+        continue;

+

+    visible_selection.Offset(

+        -dirty_in_screen.point().x(), -dirty_in_screen.point().y());

+    Highlight(region, stride, visible_selection, &highlighted_rects);

+  }

+  form_highlights_.clear();

+}

+

+void PDFiumEngine::PaintUnavailablePage(int page_index,

+                                        const pp::Rect& dirty,

+                                        pp::ImageData* image_data) {

+  int start_x, start_y, size_x, size_y;

+  GetPDFiumRect(page_index, dirty, &start_x, &start_y, &size_x, &size_y);

+  FPDF_BITMAP bitmap = CreateBitmap(dirty, image_data);

+  FPDFBitmap_FillRect(bitmap, start_x, start_y, size_x, size_y,

+                      kPendingPageColor);

+

+  pp::Rect loading_text_in_screen(

+      pages_[page_index]->rect().width() / 2,

+      pages_[page_index]->rect().y() + kLoadingTextVerticalOffset, 0, 0);

+  loading_text_in_screen = GetScreenRect(loading_text_in_screen);

+  FPDFBitmap_Destroy(bitmap);

+}

+

+int PDFiumEngine::GetProgressiveIndex(int page_index) const {

+  for (size_t i = 0; i < progressive_paints_.size(); ++i) {

+    if (progressive_paints_[i].page_index == page_index)

+      return i;

+  }

+  return -1;

+}

+

+FPDF_BITMAP PDFiumEngine::CreateBitmap(const pp::Rect& rect,

+                                       pp::ImageData* image_data) const {

+  void* region;

+  int stride;

+  GetRegion(rect.point(), image_data, &region, &stride);

+  if (!region)

+    return NULL;

+  return FPDFBitmap_CreateEx(

+      rect.width(), rect.height(), FPDFBitmap_BGRx, region, stride);

+}

+

+void PDFiumEngine::GetPDFiumRect(

+    int page_index, const pp::Rect& rect, int* start_x, int* start_y,

+    int* size_x, int* size_y) const {

+  pp::Rect page_rect = GetScreenRect(pages_[page_index]->rect());

+  page_rect.Offset(-rect.x(), -rect.y());

+

+  *start_x = page_rect.x();

+  *start_y = page_rect.y();

+  *size_x = page_rect.width();

+  *size_y = page_rect.height();

+}

+

+int PDFiumEngine::GetRenderingFlags() const {

+  int flags = FPDF_LCD_TEXT | FPDF_NO_CATCH;

+  if (render_grayscale_)

+    flags |= FPDF_GRAYSCALE;

+  if (client_->IsPrintPreview())

+    flags |= FPDF_PRINTING;

+  return flags;

+}

+

+pp::Rect PDFiumEngine::GetVisibleRect() const {

+  pp::Rect rv;

+  rv.set_x(static_cast<int>(position_.x() / current_zoom_));

+  rv.set_y(static_cast<int>(position_.y() / current_zoom_));

+  rv.set_width(static_cast<int>(ceil(plugin_size_.width() / current_zoom_)));

+  rv.set_height(static_cast<int>(ceil(plugin_size_.height() / current_zoom_)));

+  return rv;

+}

+

+pp::Rect PDFiumEngine::GetPageScreenRect(int page_index) const {

+  // Since we use this rect for creating the PDFium bitmap, also include other

+  // areas around the page that we might need to update such as the page

+  // separator and the sides if the page is narrower than the document.

+  return GetScreenRect(pp::Rect(

+      0,

+      pages_[page_index]->rect().y() - kPageShadowTop,

+      document_size_.width(),

+      pages_[page_index]->rect().height() + kPageShadowTop +

+          kPageShadowBottom + kPageSeparatorThickness));

+}

+

+pp::Rect PDFiumEngine::GetScreenRect(const pp::Rect& rect) const {

+  pp::Rect rv;

+  int right =

+      static_cast<int>(ceil(rect.right() * current_zoom_ - position_.x()));

+  int bottom =

+    static_cast<int>(ceil(rect.bottom() * current_zoom_ - position_.y()));

+

+  rv.set_x(static_cast<int>(rect.x() * current_zoom_ - position_.x()));

+  rv.set_y(static_cast<int>(rect.y() * current_zoom_ - position_.y()));

+  rv.set_width(right - rv.x());

+  rv.set_height(bottom - rv.y());

+  return rv;

+}

+

+void PDFiumEngine::Highlight(void* buffer,

+                             int stride,

+                             const pp::Rect& rect,

+                             std::vector<pp::Rect>* highlighted_rects) {

+  if (!buffer)

+    return;

+

+  pp::Rect new_rect = rect;

+  for (size_t i = 0; i < highlighted_rects->size(); ++i)

+    new_rect = new_rect.Subtract((*highlighted_rects)[i]);

+

+  highlighted_rects->push_back(new_rect);

+  int l = new_rect.x();

+  int t = new_rect.y();

+  int w = new_rect.width();

+  int h = new_rect.height();

+

+  for (int y = t; y < t + h; ++y) {

+    for (int x = l; x < l + w; ++x) {

+      uint8* pixel = static_cast<uint8*>(buffer) + y * stride + x * 4;

+      //  This is our highlight color.

+      pixel[0] = static_cast<uint8>(

+          pixel[0] * (kHighlightColorB / 255.0));

+      pixel[1] = static_cast<uint8>(

+          pixel[1] * (kHighlightColorG / 255.0));

+      pixel[2] = static_cast<uint8>(

+          pixel[2] * (kHighlightColorR / 255.0));

+    }

+  }

+}

+

+PDFiumEngine::SelectionChangeInvalidator::SelectionChangeInvalidator(

+    PDFiumEngine* engine) : engine_(engine) {

+  previous_origin_ = engine_->GetVisibleRect().point();

+  GetVisibleSelectionsScreenRects(&old_selections_);

+}

+

+PDFiumEngine::SelectionChangeInvalidator::~SelectionChangeInvalidator() {

+  // Offset the old selections if the document scrolled since we recorded them.

+  pp::Point offset = previous_origin_ - engine_->GetVisibleRect().point();

+  for (size_t i = 0; i < old_selections_.size(); ++i)

+    old_selections_[i].Offset(offset);

+

+  std::vector<pp::Rect> new_selections;

+  GetVisibleSelectionsScreenRects(&new_selections);

+  for (size_t i = 0; i < new_selections.size(); ++i) {

+    for (size_t j = 0; j < old_selections_.size(); ++j) {

+      if (!old_selections_[j].IsEmpty() &&

+          new_selections[i] == old_selections_[j]) {

+        // Rectangle was selected before and after, so no need to invalidate it.

+        // Mark the rectangles by setting them to empty.

+        new_selections[i] = old_selections_[j] = pp::Rect();

+        break;

+      }

+    }

+  }

+

+  for (size_t i = 0; i < old_selections_.size(); ++i) {

+    if (!old_selections_[i].IsEmpty())

+      engine_->client_->Invalidate(old_selections_[i]);

+  }

+  for (size_t i = 0; i < new_selections.size(); ++i) {

+    if (!new_selections[i].IsEmpty())

+      engine_->client_->Invalidate(new_selections[i]);

+  }

+  engine_->OnSelectionChanged();

+}

+

+void

+PDFiumEngine::SelectionChangeInvalidator::GetVisibleSelectionsScreenRects(

+    std::vector<pp::Rect>* rects) {

+  pp::Rect visible_rect = engine_->GetVisibleRect();

+  for (size_t i = 0; i < engine_->selection_.size(); ++i) {

+    int page_index = engine_->selection_[i].page_index();

+    if (!engine_->IsPageVisible(page_index))

+      continue;  // This selection is on a page that's not currently visible.

+

+    std::vector<pp::Rect> selection_rects =

+        engine_->selection_[i].GetScreenRects(

+            visible_rect.point(),

+            engine_->current_zoom_,

+            engine_->current_rotation_);

+    rects->insert(rects->end(), selection_rects.begin(), selection_rects.end());

+  }

+}

+

+PDFiumEngine::MouseDownState::MouseDownState(

+    const PDFiumPage::Area& area,

+    const PDFiumPage::LinkTarget& target)

+    : area_(area), target_(target) {

+}

+

+PDFiumEngine::MouseDownState::~MouseDownState() {

+}

+

+void PDFiumEngine::MouseDownState::Set(const PDFiumPage::Area& area,

+                                       const PDFiumPage::LinkTarget& target) {

+  area_ = area;

+  target_ = target;

+}

+

+void PDFiumEngine::MouseDownState::Reset() {

+  area_ = PDFiumPage::NONSELECTABLE_AREA;

+  target_ = PDFiumPage::LinkTarget();

+}

+

+bool PDFiumEngine::MouseDownState::Matches(

+    const PDFiumPage::Area& area,

+    const PDFiumPage::LinkTarget& target) const {

+  if (area_ == area) {

+    if (area == PDFiumPage::WEBLINK_AREA)

+      return target_.url == target.url;

+    if (area == PDFiumPage::DOCLINK_AREA)

+      return target_.page == target.page;

+    return true;

+  }

+  return false;

+}

+

+void PDFiumEngine::DeviceToPage(int page_index,

+                                float device_x,

+                                float device_y,

+                                double* page_x,

+                                double* page_y) {

+  *page_x = *page_y = 0;

+  int temp_x = static_cast<int>((device_x + position_.x())/ current_zoom_ -

+      pages_[page_index]->rect().x());

+  int temp_y = static_cast<int>((device_y + position_.y())/ current_zoom_ -

+      pages_[page_index]->rect().y());

+  FPDF_DeviceToPage(

+      pages_[page_index]->GetPage(), 0, 0,

+      pages_[page_index]->rect().width(),  pages_[page_index]->rect().height(),

+      current_rotation_, temp_x, temp_y, page_x, page_y);

+}

+

+int PDFiumEngine::GetVisiblePageIndex(FPDF_PAGE page) {

+  for (size_t i = 0; i < visible_pages_.size(); ++i) {

+    if (pages_[visible_pages_[i]]->GetPage() == page)

+      return visible_pages_[i];

+  }

+  return -1;

+}

+

+void PDFiumEngine::SetCurrentPage(int index) {

+  if (index == most_visible_page_ || !form_)

+    return;

+  if (most_visible_page_ != -1 && called_do_document_action_) {

+    FPDF_PAGE old_page = pages_[most_visible_page_]->GetPage();

+    FORM_DoPageAAction(old_page, form_, FPDFPAGE_AACTION_CLOSE);

+  }

+  most_visible_page_ = index;

+#if defined(OS_LINUX)

+    g_last_instance_id = client_->GetPluginInstance()->pp_instance();

+#endif

+  if (most_visible_page_ != -1 && called_do_document_action_) {

+    FPDF_PAGE new_page = pages_[most_visible_page_]->GetPage();

+    FORM_DoPageAAction(new_page, form_, FPDFPAGE_AACTION_OPEN);

+  }

+}

+

+void PDFiumEngine::TransformPDFPageForPrinting(

+    FPDF_PAGE page,

+    const PP_PrintSettings_Dev& print_settings) {

+  // Get the source page width and height in points.

+  const double src_page_width = FPDF_GetPageWidth(page);

+  const double src_page_height = FPDF_GetPageHeight(page);

+

+  const int src_page_rotation = FPDFPage_GetRotation(page);

+  const bool fit_to_page = print_settings.print_scaling_option ==

+      PP_PRINTSCALINGOPTION_FIT_TO_PRINTABLE_AREA;

+

+  pp::Size page_size(print_settings.paper_size);

+  pp::Rect content_rect(print_settings.printable_area);

+  const bool rotated = (src_page_rotation % 2 == 1);

+  SetPageSizeAndContentRect(rotated,

+                            src_page_width > src_page_height,

+                            &page_size,

+                            &content_rect);

+

+  // Compute the screen page width and height in points.

+  const int actual_page_width =

+      rotated ? page_size.height() : page_size.width();

+  const int actual_page_height =

+      rotated ? page_size.width() : page_size.height();

+

+  const double scale_factor = CalculateScaleFactor(fit_to_page, content_rect,

+                                                   src_page_width,

+                                                   src_page_height, rotated);

+

+  // Calculate positions for the clip box.

+  ClipBox source_clip_box;

+  CalculateClipBoxBoundary(page, scale_factor, rotated, &source_clip_box);

+

+  // Calculate the translation offset values.

+  double offset_x = 0;

+  double offset_y = 0;

+  if (fit_to_page) {

+    CalculateScaledClipBoxOffset(content_rect, source_clip_box, &offset_x,

+                                 &offset_y);

+  } else {

+    CalculateNonScaledClipBoxOffset(content_rect, src_page_rotation,

+                                    actual_page_width, actual_page_height,

+                                    source_clip_box, &offset_x, &offset_y);

+  }

+

+  // Reset the media box and crop box. When the page has crop box and media box,

+  // the plugin will display the crop box contents and not the entire media box.

+  // If the pages have different crop box values, the plugin will display a

+  // document of multiple page sizes. To give better user experience, we

+  // decided to have same crop box and media box values. Hence, the user will

+  // see a list of uniform pages.

+  FPDFPage_SetMediaBox(page, 0, 0, page_size.width(), page_size.height());

+  FPDFPage_SetCropBox(page, 0, 0, page_size.width(), page_size.height());

+

+  // Transformation is not required, return. Do this check only after updating

+  // the media box and crop box. For more detailed information, please refer to

+  // the comment block right before FPDF_SetMediaBox and FPDF_GetMediaBox calls.

+  if (scale_factor == 1.0 && offset_x == 0 && offset_y == 0)

+    return;

+

+

+  // All the positions have been calculated, now manipulate the PDF.

+  FS_MATRIX matrix = {static_cast<float>(scale_factor),

+                      0,

+                      0,

+                      static_cast<float>(scale_factor),

+                      static_cast<float>(offset_x),

+                      static_cast<float>(offset_y)};

+  FS_RECTF cliprect = {static_cast<float>(source_clip_box.left+offset_x),

+                       static_cast<float>(source_clip_box.top+offset_y),

+                       static_cast<float>(source_clip_box.right+offset_x),

+                       static_cast<float>(source_clip_box.bottom+offset_y)};

+  FPDFPage_TransFormWithClip(page, &matrix, &cliprect);

+  FPDFPage_TransformAnnots(page, scale_factor, 0, 0, scale_factor,

+                           offset_x, offset_y);

+}

+

+void PDFiumEngine::DrawPageShadow(const pp::Rect& page_rc,

+                                  const pp::Rect& shadow_rc,

+                                  const pp::Rect& clip_rc,

+                                  pp::ImageData* image_data) {

+  pp::Rect page_rect(page_rc);

+  page_rect.Offset(page_offset_);

+

+  pp::Rect shadow_rect(shadow_rc);

+  shadow_rect.Offset(page_offset_);

+

+  pp::Rect clip_rect(clip_rc);

+  clip_rect.Offset(page_offset_);

+

+  // Page drop shadow parameters.

+  const double factor = 0.5;

+  uint32 depth = std::max(

+      std::max(page_rect.x() - shadow_rect.x(),

+               page_rect.y() - shadow_rect.y()),

+      std::max(shadow_rect.right() - page_rect.right(),

+               shadow_rect.bottom() - page_rect.bottom()));

+  depth = static_cast<uint32>(depth * 1.5) + 1;

+

+  // We need to check depth only to verify our copy of shadow matrix is correct.

+  if (!page_shadow_.get() || page_shadow_->depth() != depth)

+    page_shadow_.reset(new ShadowMatrix(depth, factor, kBackgroundColor));

+

+  DCHECK(!image_data->is_null());

+  DrawShadow(image_data, shadow_rect, page_rect, clip_rect, *page_shadow_);

+}

+

+void PDFiumEngine::GetRegion(const pp::Point& location,

+                             pp::ImageData* image_data,

+                             void** region,

+                             int* stride) const {

+  if (image_data->is_null()) {

+    DCHECK(plugin_size_.IsEmpty());

+    *stride = 0;

+    *region = NULL;

+    return;

+  }

+  char* buffer = static_cast<char*>(image_data->data());

+  *stride = image_data->stride();

+

+  pp::Point offset_location = location + page_offset_;

+  // TODO: update this when we support BIDI and scrollbars can be on the left.

+  if (!buffer ||

+      !pp::Rect(page_offset_, plugin_size_).Contains(offset_location)) {

+    *region = NULL;

+    return;

+  }

+

+  buffer += location.y() * (*stride);

+  buffer += (location.x() + page_offset_.x()) * 4;

+  *region = buffer;

+}

+

+void PDFiumEngine::OnSelectionChanged() {

+  if (HasPermission(PDFEngine::PERMISSION_COPY))

+    pp::PDF::SetSelectedText(GetPluginInstance(), GetSelectedText().c_str());

+}

+

+void PDFiumEngine::Form_Invalidate(FPDF_FORMFILLINFO* param,

+                                   FPDF_PAGE page,

+                                   double left,

+                                   double top,

+                                   double right,

+                                   double bottom) {

+  PDFiumEngine* engine = static_cast<PDFiumEngine*>(param);

+  int page_index = engine->GetVisiblePageIndex(page);

+  if (page_index == -1) {

+    // This can sometime happen when the page is closed because it went off

+    // screen, and PDFium invalidates the control as it's being deleted.

+    return;

+  }

+

+  pp::Rect rect = engine->pages_[page_index]->PageToScreen(

+      engine->GetVisibleRect().point(), engine->current_zoom_, left, top, right,

+      bottom, engine->current_rotation_);

+  engine->client_->Invalidate(rect);

+}

+

+void PDFiumEngine::Form_OutputSelectedRect(FPDF_FORMFILLINFO* param,

+                                           FPDF_PAGE page,

+                                           double left,

+                                           double top,

+                                           double right,

+                                           double bottom) {

+  PDFiumEngine* engine = static_cast<PDFiumEngine*>(param);

+  int page_index = engine->GetVisiblePageIndex(page);

+  if (page_index == -1) {

+    NOTREACHED();

+    return;

+  }

+  pp::Rect rect = engine->pages_[page_index]->PageToScreen(

+      engine->GetVisibleRect().point(), engine->current_zoom_, left, top, right,

+      bottom, engine->current_rotation_);

+  engine->form_highlights_.push_back(rect);

+}

+

+void PDFiumEngine::Form_SetCursor(FPDF_FORMFILLINFO* param, int cursor_type) {

+  // We don't need this since it's not enough to change the cursor in all

+  // scenarios.  Instead, we check which form field we're under in OnMouseMove.

+}

+

+int PDFiumEngine::Form_SetTimer(FPDF_FORMFILLINFO* param,

+                                int elapse,

+                                TimerCallback timer_func) {

+  PDFiumEngine* engine = static_cast<PDFiumEngine*>(param);

+  engine->timers_[++engine->next_timer_id_] =

+      std::pair<int, TimerCallback>(elapse, timer_func);

+  engine->client_->ScheduleCallback(engine->next_timer_id_, elapse);

+  return engine->next_timer_id_;

+}

+

+void PDFiumEngine::Form_KillTimer(FPDF_FORMFILLINFO* param, int timer_id) {

+  PDFiumEngine* engine = static_cast<PDFiumEngine*>(param);

+  engine->timers_.erase(timer_id);

+}

+

+FPDF_SYSTEMTIME PDFiumEngine::Form_GetLocalTime(FPDF_FORMFILLINFO* param) {

+  base::Time time = base::Time::Now();

+  base::Time::Exploded exploded;

+  time.LocalExplode(&exploded);

+

+  FPDF_SYSTEMTIME rv;

+  rv.wYear = exploded.year;

+  rv.wMonth = exploded.month;

+  rv.wDayOfWeek = exploded.day_of_week;

+  rv.wDay = exploded.day_of_month;

+  rv.wHour = exploded.hour;

+  rv.wMinute = exploded.minute;

+  rv.wSecond = exploded.second;

+  rv.wMilliseconds = exploded.millisecond;

+  return rv;

+}

+

+void PDFiumEngine::Form_OnChange(FPDF_FORMFILLINFO* param) {

+  // Don't care about.

+}

+

+FPDF_PAGE PDFiumEngine::Form_GetPage(FPDF_FORMFILLINFO* param,

+                                     FPDF_DOCUMENT document,

+                                     int page_index) {

+  PDFiumEngine* engine = static_cast<PDFiumEngine*>(param);

+  if (page_index < 0 || page_index >= static_cast<int>(engine->pages_.size()))

+    return NULL;

+  return engine->pages_[page_index]->GetPage();

+}

+

+FPDF_PAGE PDFiumEngine::Form_GetCurrentPage(FPDF_FORMFILLINFO* param,

+                                            FPDF_DOCUMENT document) {

+  // TODO(jam): find out what this is used for.

+  PDFiumEngine* engine = static_cast<PDFiumEngine*>(param);

+  int index = engine->last_page_mouse_down_;

+  if (index == -1) {

+    index = engine->GetMostVisiblePage();

+    if (index == -1) {

+      NOTREACHED();

+      return NULL;

+    }

+  }

+

+  return engine->pages_[index]->GetPage();

+}

+

+int PDFiumEngine::Form_GetRotation(FPDF_FORMFILLINFO* param, FPDF_PAGE page) {

+  return 0;

+}

+

+void PDFiumEngine::Form_ExecuteNamedAction(FPDF_FORMFILLINFO* param,

+                                           FPDF_BYTESTRING named_action) {

+  PDFiumEngine* engine = static_cast<PDFiumEngine*>(param);

+  std::string action(named_action);

+  if (action == "Print") {

+    engine->client_->Print();

+    return;

+  }

+

+  int index = engine->last_page_mouse_down_;

+  /* Don't try to calculate the most visible page if we don't have a left click

+     before this event (this code originally copied Form_GetCurrentPage which of

+     course needs to do that and which doesn't have recursion). This can end up

+     causing infinite recursion. See http://crbug.com/240413 for more

+     information. Either way, it's not necessary for the spec'd list of named

+     actions.

+  if (index == -1)

+    index = engine->GetMostVisiblePage();

+  */

+  if (index == -1)

+    return;

+

+  // This is the only list of named actions per the spec (see 12.6.4.11). Adobe

+  // Reader supports more, like FitWidth, but since they're not part of the spec

+  // and we haven't got bugs about them, no need to now.

+  if (action == "NextPage") {

+    engine->client_->ScrollToPage(index + 1);

+  } else if (action == "PrevPage") {

+    engine->client_->ScrollToPage(index - 1);

+  } else if (action == "FirstPage") {

+    engine->client_->ScrollToPage(0);

+  } else if (action == "LastPage") {

+    engine->client_->ScrollToPage(engine->pages_.size() - 1);

+  }

+}

+

+void PDFiumEngine::Form_SetTextFieldFocus(FPDF_FORMFILLINFO* param,

+                                          FPDF_WIDESTRING value,

+                                          FPDF_DWORD valueLen,

+                                          FPDF_BOOL is_focus) {

+  // Do nothing for now.

+  // TODO(gene): use this signal to trigger OSK.

+}

+

+void PDFiumEngine::Form_DoURIAction(FPDF_FORMFILLINFO* param,

+                                    FPDF_BYTESTRING uri) {

+  PDFiumEngine* engine = static_cast<PDFiumEngine*>(param);

+  engine->client_->NavigateTo(std::string(uri), false);

+}

+

+void PDFiumEngine::Form_DoGoToAction(FPDF_FORMFILLINFO* param,

+                                     int page_index,

+                                     int zoom_mode,

+                                     float* position_array,

+                                     int size_of_array) {

+  PDFiumEngine* engine = static_cast<PDFiumEngine*>(param);

+  engine->client_->ScrollToPage(page_index);

+}

+

+int PDFiumEngine::Form_Alert(IPDF_JSPLATFORM* param,

+                             FPDF_WIDESTRING message,

+                             FPDF_WIDESTRING title,

+                             int type,

+                             int icon) {

+  // See fpdfformfill.h for these values.

+  enum AlertType {

+    ALERT_TYPE_OK = 0,

+    ALERT_TYPE_OK_CANCEL,

+    ALERT_TYPE_YES_ON,

+    ALERT_TYPE_YES_NO_CANCEL

+  };

+

+  enum AlertResult {

+    ALERT_RESULT_OK = 1,

+    ALERT_RESULT_CANCEL,

+    ALERT_RESULT_NO,

+    ALERT_RESULT_YES

+  };

+

+  PDFiumEngine* engine = static_cast<PDFiumEngine*>(param);

+  std::string message_str =

+      base::UTF16ToUTF8(reinterpret_cast<const base::char16*>(message));

+  if (type == ALERT_TYPE_OK) {

+    engine->client_->Alert(message_str);

+    return ALERT_RESULT_OK;

+  }

+

+  bool rv = engine->client_->Confirm(message_str);

+  if (type == ALERT_TYPE_OK_CANCEL)

+    return rv ? ALERT_RESULT_OK : ALERT_RESULT_CANCEL;

+  return rv ? ALERT_RESULT_YES : ALERT_RESULT_NO;

+}

+

+void PDFiumEngine::Form_Beep(IPDF_JSPLATFORM* param, int type) {

+  // Beeps are annoying, and not possible using javascript, so ignore for now.

+}

+

+int PDFiumEngine::Form_Response(IPDF_JSPLATFORM* param,

+                                FPDF_WIDESTRING question,

+                                FPDF_WIDESTRING title,

+                                FPDF_WIDESTRING default_response,

+                                FPDF_WIDESTRING label,

+                                FPDF_BOOL password,

+                                void* response,

+                                int length) {

+  std::string question_str = base::UTF16ToUTF8(

+      reinterpret_cast<const base::char16*>(question));

+  std::string default_str = base::UTF16ToUTF8(

+      reinterpret_cast<const base::char16*>(default_response));

+

+  PDFiumEngine* engine = static_cast<PDFiumEngine*>(param);

+  std::string rv = engine->client_->Prompt(question_str, default_str);

+  base::string16 rv_16 = base::UTF8ToUTF16(rv);

+  int rv_bytes = rv_16.size() * sizeof(base::char16);

+  if (response) {

+    int bytes_to_copy = rv_bytes < length ? rv_bytes : length;

+    memcpy(response, rv_16.c_str(), bytes_to_copy);

+  }

+  return rv_bytes;

+}

+

+int PDFiumEngine::Form_GetFilePath(IPDF_JSPLATFORM* param,

+                                   void* file_path,

+                                   int length) {

+  PDFiumEngine* engine = static_cast<PDFiumEngine*>(param);

+  std::string rv = engine->client_->GetURL();

+  if (file_path && rv.size() <= static_cast<size_t>(length))

+    memcpy(file_path, rv.c_str(), rv.size());

+  return rv.size();

+}

+

+void PDFiumEngine::Form_Mail(IPDF_JSPLATFORM* param,

+                             void* mail_data,

+                             int length,

+                             FPDF_BOOL ui,

+                             FPDF_WIDESTRING to,

+                             FPDF_WIDESTRING subject,

+                             FPDF_WIDESTRING cc,

+                             FPDF_WIDESTRING bcc,

+                             FPDF_WIDESTRING message) {

+  DCHECK(length == 0);  // Don't handle attachments; no way with mailto.

+  std::string to_str =

+      base::UTF16ToUTF8(reinterpret_cast<const base::char16*>(to));

+  std::string cc_str =

+      base::UTF16ToUTF8(reinterpret_cast<const base::char16*>(cc));

+  std::string bcc_str =

+      base::UTF16ToUTF8(reinterpret_cast<const base::char16*>(bcc));

+  std::string subject_str =

+      base::UTF16ToUTF8(reinterpret_cast<const base::char16*>(subject));

+  std::string message_str =

+      base::UTF16ToUTF8(reinterpret_cast<const base::char16*>(message));

+

+  PDFiumEngine* engine = static_cast<PDFiumEngine*>(param);

+  engine->client_->Email(to_str, cc_str, bcc_str, subject_str, message_str);

+}

+

+void PDFiumEngine::Form_Print(IPDF_JSPLATFORM* param,

+                              FPDF_BOOL ui,

+                              int start,

+                              int end,

+                              FPDF_BOOL silent,

+                              FPDF_BOOL shrink_to_fit,

+                              FPDF_BOOL print_as_image,

+                              FPDF_BOOL reverse,

+                              FPDF_BOOL annotations) {

+  // No way to pass the extra information to the print dialog using JavaScript.

+  // Just opening it is fine for now.

+  PDFiumEngine* engine = static_cast<PDFiumEngine*>(param);

+  engine->client_->Print();

+}

+

+void PDFiumEngine::Form_SubmitForm(IPDF_JSPLATFORM* param,

+                                   void* form_data,

+                                   int length,

+                                   FPDF_WIDESTRING url) {

+  std::string url_str =

+      base::UTF16ToUTF8(reinterpret_cast<const base::char16*>(url));

+  PDFiumEngine* engine = static_cast<PDFiumEngine*>(param);

+  engine->client_->SubmitForm(url_str, form_data, length);

+}

+

+void PDFiumEngine::Form_GotoPage(IPDF_JSPLATFORM* param,

+                                 int page_number) {

+  PDFiumEngine* engine = static_cast<PDFiumEngine*>(param);

+  engine->client_->ScrollToPage(page_number);

+}

+

+int PDFiumEngine::Form_Browse(IPDF_JSPLATFORM* param,

+                              void* file_path,

+                              int length) {

+  PDFiumEngine* engine = static_cast<PDFiumEngine*>(param);

+  std::string path = engine->client_->ShowFileSelectionDialog();

+  if (path.size() + 1 <= static_cast<size_t>(length))

+    memcpy(file_path, &path[0], path.size() + 1);

+  return path.size() + 1;

+}

+

+FPDF_BOOL PDFiumEngine::Pause_NeedToPauseNow(IFSDK_PAUSE* param) {

+  PDFiumEngine* engine = static_cast<PDFiumEngine*>(param);

+  return (base::Time::Now() - engine->last_progressive_start_time_).

+      InMilliseconds() > engine->progressive_paint_timeout_;

+}

+

+ScopedUnsupportedFeature::ScopedUnsupportedFeature(PDFiumEngine* engine)

+    : engine_(engine), old_engine_(g_engine_for_unsupported) {

+  g_engine_for_unsupported = engine_;

+}

+

+ScopedUnsupportedFeature::~ScopedUnsupportedFeature() {

+  g_engine_for_unsupported = old_engine_;

+}

+

+PDFEngineExports* PDFEngineExports::Create() {

+  return new PDFiumEngineExports;

+}

+

+namespace {

+

+int CalculatePosition(FPDF_PAGE page,

+                      const PDFiumEngineExports::RenderingSettings& settings,

+                      pp::Rect* dest) {

+  int page_width = static_cast<int>(

+      FPDF_GetPageWidth(page) * settings.dpi_x / kPointsPerInch);

+  int page_height = static_cast<int>(

+      FPDF_GetPageHeight(page) * settings.dpi_y / kPointsPerInch);

+

+  // Start by assuming that we will draw exactly to the bounds rect

+  // specified.

+  *dest = settings.bounds;

+

+  int rotate = 0;  // normal orientation.

+

+  // Auto-rotate landscape pages to print correctly.

+  if (settings.autorotate &&

+      (dest->width() > dest->height()) != (page_width > page_height)) {

+    rotate = 3;  // 90 degrees counter-clockwise.

+    std::swap(page_width, page_height);

+  }

+

+  // See if we need to scale the output

+  bool scale_to_bounds = false;

+  if (settings.fit_to_bounds &&

+      ((page_width > dest->width()) || (page_height > dest->height()))) {

+    scale_to_bounds = true;

+  } else if (settings.stretch_to_bounds &&

+             ((page_width < dest->width()) || (page_height < dest->height()))) {

+    scale_to_bounds = true;

+  }

+

+  if (scale_to_bounds) {

+    // If we need to maintain aspect ratio, calculate the actual width and

+    // height.

+    if (settings.keep_aspect_ratio) {

+      double scale_factor_x = page_width;

+      scale_factor_x /= dest->width();

+      double scale_factor_y = page_height;

+      scale_factor_y /= dest->height();

+      if (scale_factor_x > scale_factor_y) {

+        dest->set_height(page_height / scale_factor_x);

+      } else {

+        dest->set_width(page_width / scale_factor_y);

+      }

+    }

+  } else {

+    // We are not scaling to bounds. Draw in the actual page size. If the

+    // actual page size is larger than the bounds, the output will be

+    // clipped.

+    dest->set_width(page_width);

+    dest->set_height(page_height);

+  }

+

+  if (settings.center_in_bounds) {

+    pp::Point offset((settings.bounds.width() - dest->width()) / 2,

+                     (settings.bounds.height() - dest->height()) / 2);

+    dest->Offset(offset);

+  }

+  return rotate;

+}

+

+}  // namespace

+

+#if defined(OS_WIN)

+bool PDFiumEngineExports::RenderPDFPageToDC(const void* pdf_buffer,

+                                            int buffer_size,

+                                            int page_number,

+                                            const RenderingSettings& settings,

+                                            HDC dc) {

+  FPDF_DOCUMENT doc = FPDF_LoadMemDocument(pdf_buffer, buffer_size, NULL);

+  if (!doc)

+    return false;

+  FPDF_PAGE page = FPDF_LoadPage(doc, page_number);

+  if (!page) {

+    FPDF_CloseDocument(doc);

+    return false;

+  }

+  RenderingSettings new_settings = settings;

+  // calculate the page size

+  if (new_settings.dpi_x == -1)

+    new_settings.dpi_x = GetDeviceCaps(dc, LOGPIXELSX);

+  if (new_settings.dpi_y == -1)

+    new_settings.dpi_y = GetDeviceCaps(dc, LOGPIXELSY);

+

+  pp::Rect dest;

+  int rotate = CalculatePosition(page, new_settings, &dest);

+

+  int save_state = SaveDC(dc);

+  // The caller wanted all drawing to happen within the bounds specified.

+  // Based on scale calculations, our destination rect might be larger

+  // than the bounds. Set the clip rect to the bounds.

+  IntersectClipRect(dc, settings.bounds.x(), settings.bounds.y(),

+                    settings.bounds.x() + settings.bounds.width(),

+                    settings.bounds.y() + settings.bounds.height());

+

+  // A temporary hack. PDFs generated by Cairo (used by Chrome OS to generate

+  // a PDF output from a webpage) result in very large metafiles and the

+  // rendering using FPDF_RenderPage is incorrect. In this case, render as a

+  // bitmap. Note that this code does not kick in for PDFs printed from Chrome

+  // because in that case we create a temp PDF first before printing and this

+  // temp PDF does not have a creator string that starts with "cairo".

+  base::string16 creator;

+  size_t buffer_bytes = FPDF_GetMetaText(doc, "Creator", NULL, 0);

+  if (buffer_bytes > 1) {

+    FPDF_GetMetaText(

+        doc, "Creator", WriteInto(&creator, buffer_bytes + 1), buffer_bytes);

+  }

+  bool use_bitmap = false;

+  if (StartsWith(creator, L"cairo", false))

+    use_bitmap = true;

+

+  // Another temporary hack. Some PDFs seems to render very slowly if

+  // FPDF_RenderPage is directly used on a printer DC. I suspect it is

+  // because of the code to talk Postscript directly to the printer if

+  // the printer supports this. Need to discuss this with PDFium. For now,

+  // render to a bitmap and then blit the bitmap to the DC if we have been

+  // supplied a printer DC.

+  int device_type = GetDeviceCaps(dc, TECHNOLOGY);

+  if (use_bitmap ||

+      (device_type == DT_RASPRINTER) || (device_type == DT_PLOTTER)) {

+    FPDF_BITMAP bitmap = FPDFBitmap_Create(dest.width(), dest.height(),

+                                           FPDFBitmap_BGRx);

+      // Clear the bitmap

+    FPDFBitmap_FillRect(bitmap, 0, 0, dest.width(), dest.height(), 0xFFFFFFFF);

+    FPDF_RenderPageBitmap(

+        bitmap, page, 0, 0, dest.width(), dest.height(), rotate,

+        FPDF_ANNOT | FPDF_PRINTING | FPDF_NO_CATCH);

+    int stride = FPDFBitmap_GetStride(bitmap);

+    BITMAPINFO bmi;

+    memset(&bmi, 0, sizeof(bmi));

+    bmi.bmiHeader.biSize = sizeof(BITMAPINFOHEADER);

+    bmi.bmiHeader.biWidth = dest.width();

+    bmi.bmiHeader.biHeight = -dest.height();  // top-down image

+    bmi.bmiHeader.biPlanes = 1;

+    bmi.bmiHeader.biBitCount = 32;

+    bmi.bmiHeader.biCompression = BI_RGB;

+    bmi.bmiHeader.biSizeImage = stride * dest.height();

+    StretchDIBits(dc, dest.x(), dest.y(), dest.width(), dest.height(),

+                  0, 0, dest.width(), dest.height(),

+                  FPDFBitmap_GetBuffer(bitmap), &bmi, DIB_RGB_COLORS, SRCCOPY);

+    FPDFBitmap_Destroy(bitmap);

+  } else {

+    FPDF_RenderPage(dc, page, dest.x(), dest.y(), dest.width(), dest.height(),

+                    rotate, FPDF_ANNOT | FPDF_PRINTING | FPDF_NO_CATCH);

+  }

+  RestoreDC(dc, save_state);

+  FPDF_ClosePage(page);

+  FPDF_CloseDocument(doc);

+  return true;

+}

+#endif  // OS_WIN

+

+bool PDFiumEngineExports::RenderPDFPageToBitmap(

+    const void* pdf_buffer,

+    int pdf_buffer_size,

+    int page_number,

+    const RenderingSettings& settings,

+    void* bitmap_buffer) {

+  FPDF_DOCUMENT doc = FPDF_LoadMemDocument(pdf_buffer, pdf_buffer_size, NULL);

+  if (!doc)

+    return false;

+  FPDF_PAGE page = FPDF_LoadPage(doc, page_number);

+  if (!page) {

+    FPDF_CloseDocument(doc);

+    return false;

+  }

+

+  pp::Rect dest;

+  int rotate = CalculatePosition(page, settings, &dest);

+

+  FPDF_BITMAP bitmap =

+      FPDFBitmap_CreateEx(settings.bounds.width(), settings.bounds.height(),

+                          FPDFBitmap_BGRA, bitmap_buffer,

+                          settings.bounds.width() * 4);

+  // Clear the bitmap

+  FPDFBitmap_FillRect(bitmap, 0, 0, settings.bounds.width(),

+                      settings.bounds.height(), 0xFFFFFFFF);

+  // Shift top-left corner of bounds to (0, 0) if it's not there.

+  dest.set_point(dest.point() - settings.bounds.point());

+  FPDF_RenderPageBitmap(

+      bitmap, page, dest.x(), dest.y(), dest.width(), dest.height(), rotate,

+      FPDF_ANNOT | FPDF_PRINTING | FPDF_NO_CATCH);

+  FPDFBitmap_Destroy(bitmap);

+  FPDF_ClosePage(page);

+  FPDF_CloseDocument(doc);

+  return true;

+}

+

+bool PDFiumEngineExports::GetPDFDocInfo(const void* pdf_buffer,

+                                        int buffer_size,

+                                        int* page_count,

+                                        double* max_page_width) {

+  FPDF_DOCUMENT doc = FPDF_LoadMemDocument(pdf_buffer, buffer_size, NULL);

+  if (!doc)

+    return false;

+  int page_count_local = FPDF_GetPageCount(doc);

+  if (page_count) {

+    *page_count = page_count_local;

+  }

+  if (max_page_width) {

+    *max_page_width = 0;

+    for (int page_number = 0; page_number < page_count_local; page_number++) {

+      double page_width = 0;

+      double page_height = 0;

+      FPDF_GetPageSizeByIndex(doc, page_number, &page_width, &page_height);

+      if (page_width > *max_page_width) {

+        *max_page_width = page_width;

+      }

+    }

+  }

+  FPDF_CloseDocument(doc);

+  return true;

+}

+

+bool PDFiumEngineExports::GetPDFPageSizeByIndex(

+    const void* pdf_buffer,

+    int pdf_buffer_size,

+    int page_number,

+    double* width,

+    double* height) {

+  FPDF_DOCUMENT doc = FPDF_LoadMemDocument(pdf_buffer, pdf_buffer_size, NULL);

+  if (!doc)

+    return false;

+  bool success = FPDF_GetPageSizeByIndex(doc, page_number, width, height) != 0;

+  FPDF_CloseDocument(doc);

+  return success;

+}

+

+}  // namespace chrome_pdf

diff --git a/xfa_test/pdf/pdfium/pdfium_engine.h b/xfa_test/pdf/pdfium/pdfium_engine.h
new file mode 100644
index 0000000000..242c33df27
--- /dev/null
+++ b/xfa_test/pdf/pdfium/pdfium_engine.h
@@ -0,0 +1,687 @@
+// Copyright (c) 2012 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef PDF_PDFIUM_PDFIUM_ENGINE_H_
+#define PDF_PDFIUM_PDFIUM_ENGINE_H_
+
+#include <map>
+#include <string>
+#include <utility>
+#include <vector>
+
+#include "base/memory/scoped_ptr.h"
+#include "base/time/time.h"
+#include "pdf/document_loader.h"
+#include "pdf/pdf_engine.h"
+#include "pdf/pdfium/pdfium_page.h"
+#include "pdf/pdfium/pdfium_range.h"
+#include "ppapi/cpp/completion_callback.h"
+#include "ppapi/cpp/dev/buffer_dev.h"
+#include "ppapi/cpp/image_data.h"
+#include "ppapi/cpp/point.h"
+#include "third_party/pdfium/fpdfsdk/include/fpdf_dataavail.h"
+#include "third_party/pdfium/fpdfsdk/include/fpdf_progressive.h"
+#include "third_party/pdfium/fpdfsdk/include/fpdfformfill.h"
+#include "third_party/pdfium/fpdfsdk/include/fpdfview.h"
+
+#define _TEST_XFA
+#ifdef _TEST_XFA
+# if defined(WIN32)
+#	define FXQA_TESTFILE(filename) "E:/"#filename
+# else
+#	define FXQA_TESTFILE(filename) "/home/"#filename
+# endif
+#endif
+
+namespace pp {
+class KeyboardInputEvent;
+class MouseInputEvent;
+}
+
+namespace chrome_pdf {
+
+class ShadowMatrix;
+
+class PDFiumEngine : public PDFEngine,
+                     public DocumentLoader::Client,
+                     public FPDF_FORMFILLINFO,
+                     public IPDF_JSPLATFORM,
+                     public IFSDK_PAUSE {
+ public:
+  explicit PDFiumEngine(PDFEngine::Client* client);
+  virtual ~PDFiumEngine();
+
+  // PDFEngine implementation.
+  virtual bool New(const char* url);
+  virtual bool New(const char* url,
+                   const char* headers);
+  virtual void PageOffsetUpdated(const pp::Point& page_offset);
+  virtual void PluginSizeUpdated(const pp::Size& size);
+  virtual void ScrolledToXPosition(int position);
+  virtual void ScrolledToYPosition(int position);
+  virtual void PrePaint();
+  virtual void Paint(const pp::Rect& rect,
+                     pp::ImageData* image_data,
+                     std::vector<pp::Rect>* ready,
+                     std::vector<pp::Rect>* pending);
+  virtual void PostPaint();
+  virtual bool HandleDocumentLoad(const pp::URLLoader& loader);
+  virtual bool HandleEvent(const pp::InputEvent& event);
+  virtual uint32_t QuerySupportedPrintOutputFormats();
+  virtual void PrintBegin();
+  virtual pp::Resource PrintPages(
+      const PP_PrintPageNumberRange_Dev* page_ranges,
+      uint32_t page_range_count,
+      const PP_PrintSettings_Dev& print_settings);
+  virtual void PrintEnd();
+  virtual void StartFind(const char* text, bool case_sensitive);
+  virtual bool SelectFindResult(bool forward);
+  virtual void StopFind();
+  virtual void ZoomUpdated(double new_zoom_level);
+  virtual void RotateClockwise();
+  virtual void RotateCounterclockwise();
+  virtual std::string GetSelectedText();
+  virtual std::string GetLinkAtPosition(const pp::Point& point);
+  virtual bool IsSelecting();
+  virtual bool HasPermission(DocumentPermission permission) const;
+  virtual void SelectAll();
+  virtual int GetNumberOfPages();
+  virtual int GetNamedDestinationPage(const std::string& destination);
+  virtual int GetFirstVisiblePage();
+  virtual int GetMostVisiblePage();
+  virtual pp::Rect GetPageRect(int index);
+  virtual pp::Rect GetPageContentsRect(int index);
+  virtual int GetVerticalScrollbarYPosition() { return position_.y(); }
+  virtual void PaintThumbnail(pp::ImageData* image_data, int index);
+  virtual void SetGrayscale(bool grayscale);
+  virtual void OnCallback(int id);
+  virtual std::string GetPageAsJSON(int index);
+  virtual bool GetPrintScaling();
+  virtual void AppendBlankPages(int num_pages);
+  virtual void AppendPage(PDFEngine* engine, int index);
+  virtual pp::Point GetScrollPosition();
+  virtual void SetScrollPosition(const pp::Point& position);
+  virtual bool IsProgressiveLoad();
+
+  // DocumentLoader::Client implementation.
+  virtual pp::Instance* GetPluginInstance();
+  virtual pp::URLLoader CreateURLLoader();
+  virtual void OnPartialDocumentLoaded();
+  virtual void OnPendingRequestComplete();
+  virtual void OnNewDataAvailable();
+  virtual void OnDocumentComplete();
+
+  void UnsupportedFeature(int type);
+
+  std::string current_find_text() const { return current_find_text_; }
+
+  FPDF_DOCUMENT doc() { return doc_; }
+  FPDF_FORMHANDLE form() { return form_; }
+
+ private:
+  // This helper class is used to detect the difference in selection between
+  // construction and destruction.  At destruction, it invalidates all the
+  // parts that are newly selected, along with all the parts that used to be
+  // selected but are not anymore.
+  class SelectionChangeInvalidator {
+   public:
+    explicit SelectionChangeInvalidator(PDFiumEngine* engine);
+    ~SelectionChangeInvalidator();
+   private:
+    // Sets the given container to the all the currently visible selection
+    // rectangles, in screen coordinates.
+    void GetVisibleSelectionsScreenRects(std::vector<pp::Rect>* rects);
+
+    PDFiumEngine* engine_;
+    // Screen rectangles that were selected on construction.
+    std::vector<pp::Rect> old_selections_;
+    // The origin at the time this object was constructed.
+    pp::Point previous_origin_;
+  };
+
+  // Used to store mouse down state to handle it in other mouse event handlers.
+  class MouseDownState {
+   public:
+    MouseDownState(const PDFiumPage::Area& area,
+                   const PDFiumPage::LinkTarget& target);
+    ~MouseDownState();
+
+    void Set(const PDFiumPage::Area& area,
+             const PDFiumPage::LinkTarget& target);
+    void Reset();
+    bool Matches(const PDFiumPage::Area& area,
+                 const PDFiumPage::LinkTarget& target) const;
+
+   private:
+    PDFiumPage::Area area_;
+    PDFiumPage::LinkTarget target_;
+
+    DISALLOW_COPY_AND_ASSIGN(MouseDownState);
+  };
+
+  friend class SelectionChangeInvalidator;
+
+  struct FileAvail : public FX_FILEAVAIL {
+    DocumentLoader* loader;
+  };
+
+  struct DownloadHints : public FX_DOWNLOADHINTS {
+    DocumentLoader* loader;
+  };
+
+  // PDFium interface to get block of data.
+  static int GetBlock(void* param, unsigned long position,
+                      unsigned char* buffer, unsigned long size);
+
+  // PDFium interface to check is block of data is available.
+  static bool IsDataAvail(FX_FILEAVAIL* param,
+                          size_t offset, size_t size);
+
+  // PDFium interface to request download of the block of data.
+  static void AddSegment(FX_DOWNLOADHINTS* param,
+                         size_t offset, size_t size);
+
+  // We finished getting the pdf file, so load it. This will complete
+  // asynchronously (due to password fetching) and may be run multiple times.
+  void LoadDocument();
+
+  // Try loading the document. Returns true if the document is successfully
+  // loaded or is already loaded otherwise it will return false. If
+  // |with_password| is set to true, the document will be loaded with
+  // |password|. If the document could not be loaded and needs a password,
+  // |needs_password| will be set to true.
+  bool TryLoadingDoc(bool with_password,
+                     const std::string& password,
+                     bool* needs_password);
+
+  // Ask the user for the document password and then continue loading the
+  // document.
+  void GetPasswordAndLoad();
+
+  // Called when the password has been retrieved.
+  void OnGetPasswordComplete(int32_t result,
+                             const pp::Var& password);
+
+  // Continues loading the document when the password has been retrieved, or if
+  // there is no password.
+  void ContinueLoadingDocument(bool has_password,
+                               const std::string& password);
+
+  // Finish loading the document and notify the client that the document has
+  // been loaded. This should only be run after |doc_| has been loaded and the
+  // document is fully downloaded. If this has been run once, it will result in
+  // a no-op.
+  void FinishLoadingDocument();
+
+  // Loads information about the pages in the document and calculate the
+  // document size.
+  void LoadPageInfo(bool reload);
+
+  // Calculate which pages should be displayed right now.
+  void CalculateVisiblePages();
+
+  // Returns true iff the given page index is visible.  CalculateVisiblePages
+  // must have been called first.
+  bool IsPageVisible(int index) const;
+
+  // Checks if a page is now available, and if so marks it as such and returns
+  // true.  Otherwise, it will return false and will add the index to the given
+  // array if it's not already there.
+  bool CheckPageAvailable(int index, std::vector<int>* pending);
+
+  // Helper function to get a given page's size in pixels.  This is not part of
+  // PDFiumPage because we might not have that structure when we need this.
+  pp::Size GetPageSize(int index);
+
+  void UpdateTickMarks();
+
+  // Called to continue searching so we don't block the main thread.
+  void ContinueFind(int32_t result);
+
+  // Inserts a find result into find_results_, which is sorted.
+  void AddFindResult(const PDFiumRange& result);
+
+  // Search a page using PDFium's methods.  Doesn't work with unicode.  This
+  // function is just kept arount in case PDFium code is fixed.
+  void SearchUsingPDFium(const base::string16& term,
+                         bool case_sensitive,
+                         bool first_search,
+                         int character_to_start_searching_from,
+                         int current_page);
+
+  // Search a page ourself using ICU.
+  void SearchUsingICU(const base::string16& term,
+                      bool case_sensitive,
+                      bool first_search,
+                      int character_to_start_searching_from,
+                      int current_page);
+
+  // Input event handlers.
+  bool OnMouseDown(const pp::MouseInputEvent& event);
+  bool OnMouseUp(const pp::MouseInputEvent& event);
+  bool OnMouseMove(const pp::MouseInputEvent& event);
+  bool OnKeyDown(const pp::KeyboardInputEvent& event);
+  bool OnKeyUp(const pp::KeyboardInputEvent& event);
+  bool OnChar(const pp::KeyboardInputEvent& event);
+
+  FPDF_DOCUMENT CreateSinglePageRasterPdf(
+      double source_page_width,
+      double source_page_height,
+      const PP_PrintSettings_Dev& print_settings,
+      PDFiumPage* page_to_print);
+
+  pp::Buffer_Dev PrintPagesAsRasterPDF(
+      const PP_PrintPageNumberRange_Dev* page_ranges,
+      uint32_t page_range_count,
+      const PP_PrintSettings_Dev& print_settings);
+
+  pp::Buffer_Dev PrintPagesAsPDF(const PP_PrintPageNumberRange_Dev* page_ranges,
+                                 uint32_t page_range_count,
+                                 const PP_PrintSettings_Dev& print_settings);
+
+  pp::Buffer_Dev GetFlattenedPrintData(const FPDF_DOCUMENT& doc);
+  void FitContentsToPrintableAreaIfRequired(
+      const FPDF_DOCUMENT& doc,
+      const PP_PrintSettings_Dev& print_settings);
+  void SaveSelectedFormForPrint();
+
+  // Given a mouse event, returns which page and character location it's closest
+  // to.
+  PDFiumPage::Area GetCharIndex(const pp::MouseInputEvent& event,
+                                int* page_index,
+                                int* char_index,
+                                PDFiumPage::LinkTarget* target);
+  PDFiumPage::Area GetCharIndex(const pp::Point& point,
+                                int* page_index,
+                                int* char_index,
+                                PDFiumPage::LinkTarget* target);
+
+  void OnSingleClick(int page_index, int char_index);
+  void OnMultipleClick(int click_count, int page_index, int char_index);
+
+  // Starts a progressive paint operation given a rectangle in screen
+  // coordinates. Returns the index in progressive_rects_.
+  int StartPaint(int page_index, const pp::Rect& dirty);
+
+  // Continues a paint operation that was started earlier.  Returns true if the
+  // paint is done, or false if it needs to be continued.
+  bool ContinuePaint(int progressive_index, pp::ImageData* image_data);
+
+  // Called once PDFium is finished rendering a page so that we draw our
+  // borders, highlighting etc.
+  void FinishPaint(int progressive_index, pp::ImageData* image_data);
+
+  // Stops any paints that are in progress.
+  void CancelPaints();
+
+  // Invalidates all pages. Use this when some global parameter, such as page
+  // orientation, has changed.
+  void InvalidateAllPages();
+
+  // If the page is narrower than the document size, paint the extra space
+  // with the page background.
+  void FillPageSides(int progressive_index);
+
+  void PaintPageShadow(int progressive_index, pp::ImageData* image_data);
+
+  // Highlight visible find results and selections.
+  void DrawSelections(int progressive_index, pp::ImageData* image_data);
+
+  // Paints an page that hasn't finished downloading.
+  void PaintUnavailablePage(int page_index,
+                            const pp::Rect& dirty,
+                            pp::ImageData* image_data);
+
+  // Given a page index, returns the corresponding index in progressive_rects_,
+  // or -1 if it doesn't exist.
+  int GetProgressiveIndex(int page_index) const;
+
+  // Creates a FPDF_BITMAP from a rectangle in screen coordinates.
+  FPDF_BITMAP CreateBitmap(const pp::Rect& rect,
+                           pp::ImageData* image_data) const;
+
+  // Given a rectangle in screen coordinates, returns the coordinates in the
+  // units that PDFium rendering functions expect.
+  void GetPDFiumRect(int page_index, const pp::Rect& rect, int* start_x,
+                     int* start_y, int* size_x, int* size_y) const;
+
+  // Returns the rendering flags to pass to PDFium.
+  int GetRenderingFlags() const;
+
+  // Returns the currently visible rectangle in document coordinates.
+  pp::Rect GetVisibleRect() const;
+
+  // Returns a page's rect in screen coordinates, as well as its surrounding
+  // border areas and bottom separator.
+  pp::Rect GetPageScreenRect(int page_index) const;
+
+  // Given a rectangle in document coordinates, returns the rectange into screen
+  // coordinates (i.e. 0,0 is top left corner of plugin area).  If it's not
+  // visible, an empty rectangle is returned.
+  pp::Rect GetScreenRect(const pp::Rect& rect) const;
+
+  // Highlights the given rectangle.
+  void Highlight(void* buffer,
+                 int stride,
+                 const pp::Rect& rect,
+                 std::vector<pp::Rect>* highlighted_rects);
+
+  // Helper function to convert a device to page coordinates.  If the page is
+  // not yet loaded, page_x and page_y will be set to 0.
+  void DeviceToPage(int page_index,
+                    float device_x,
+                    float device_y,
+                    double* page_x,
+                    double* page_y);
+
+  // Helper function to get the index of a given FPDF_PAGE.  Returns -1 if not
+  // found.
+  int GetVisiblePageIndex(FPDF_PAGE page);
+
+  // Helper function to change the current page, running page open/close
+  // triggers as necessary.
+  void SetCurrentPage(int index);
+
+  // Transform |page| contents to fit in the selected printer paper size.
+  void TransformPDFPageForPrinting(FPDF_PAGE page,
+                                   const PP_PrintSettings_Dev& print_settings);
+
+  void DrawPageShadow(const pp::Rect& page_rect,
+                      const pp::Rect& shadow_rect,
+                      const pp::Rect& clip_rect,
+                      pp::ImageData* image_data);
+
+  void GetRegion(const pp::Point& location,
+                 pp::ImageData* image_data,
+                 void** region,
+                 int* stride) const;
+
+  // Called when the selection changes.
+  void OnSelectionChanged();
+
+  // FPDF_FORMFILLINFO callbacks.
+  static void Form_Invalidate(FPDF_FORMFILLINFO* param,
+                              FPDF_PAGE page,
+                              double left,
+                              double top,
+                              double right,
+                              double bottom);
+  static void Form_OutputSelectedRect(FPDF_FORMFILLINFO* param,
+                                      FPDF_PAGE page,
+                                      double left,
+                                      double top,
+                                      double right,
+                                      double bottom);
+  static void Form_SetCursor(FPDF_FORMFILLINFO* param, int cursor_type);
+  static int Form_SetTimer(FPDF_FORMFILLINFO* param,
+                           int elapse,
+                           TimerCallback timer_func);
+  static void Form_KillTimer(FPDF_FORMFILLINFO* param, int timer_id);
+  static FPDF_SYSTEMTIME Form_GetLocalTime(FPDF_FORMFILLINFO* param);
+  static void Form_OnChange(FPDF_FORMFILLINFO* param);
+  static FPDF_PAGE Form_GetPage(FPDF_FORMFILLINFO* param,
+                                FPDF_DOCUMENT document,
+                                int page_index);
+  static FPDF_PAGE Form_GetCurrentPage(FPDF_FORMFILLINFO* param,
+                                       FPDF_DOCUMENT document);
+  static int Form_GetRotation(FPDF_FORMFILLINFO* param, FPDF_PAGE page);
+  static void Form_ExecuteNamedAction(FPDF_FORMFILLINFO* param,
+                                      FPDF_BYTESTRING named_action);
+  static void Form_SetTextFieldFocus(FPDF_FORMFILLINFO* param,
+                                     FPDF_WIDESTRING value,
+                                     FPDF_DWORD valueLen,
+                                     FPDF_BOOL is_focus);
+  static void Form_DoURIAction(FPDF_FORMFILLINFO* param, FPDF_BYTESTRING uri);
+  static void Form_DoGoToAction(FPDF_FORMFILLINFO* param,
+                                int page_index,
+                                int zoom_mode,
+                                float* position_array,
+                                int size_of_array);
+
+  // IPDF_JSPLATFORM callbacks.
+  static int Form_Alert(IPDF_JSPLATFORM* param,
+                        FPDF_WIDESTRING message,
+                        FPDF_WIDESTRING title,
+                        int type,
+                        int icon);
+  static void Form_Beep(IPDF_JSPLATFORM* param, int type);
+  static int Form_Response(IPDF_JSPLATFORM* param,
+                           FPDF_WIDESTRING question,
+                           FPDF_WIDESTRING title,
+                           FPDF_WIDESTRING default_response,
+                           FPDF_WIDESTRING label,
+                           FPDF_BOOL password,
+                           void* response,
+                           int length);
+  static int Form_GetFilePath(IPDF_JSPLATFORM* param,
+                              void* file_path,
+                              int length);
+  static void Form_Mail(IPDF_JSPLATFORM* param,
+                        void* mail_data,
+                        int length,
+                        FPDF_BOOL ui,
+                        FPDF_WIDESTRING to,
+                        FPDF_WIDESTRING subject,
+                        FPDF_WIDESTRING cc,
+                        FPDF_WIDESTRING bcc,
+                        FPDF_WIDESTRING message);
+  static void Form_Print(IPDF_JSPLATFORM* param,
+                         FPDF_BOOL ui,
+                         int start,
+                         int end,
+                         FPDF_BOOL silent,
+                         FPDF_BOOL shrink_to_fit,
+                         FPDF_BOOL print_as_image,
+                         FPDF_BOOL reverse,
+                         FPDF_BOOL annotations);
+  static void Form_SubmitForm(IPDF_JSPLATFORM* param,
+                              void* form_data,
+                              int length,
+                              FPDF_WIDESTRING url);
+  static void Form_GotoPage(IPDF_JSPLATFORM* param, int page_number);
+  static int Form_Browse(IPDF_JSPLATFORM* param, void* file_path, int length);
+#ifdef _TEST_XFA
+  static void Form_EmailTo(FPDF_FORMFILLINFO* pThis, FPDF_FILEHANDLER* fileHandler, 
+	  FPDF_WIDESTRING to, FPDF_WIDESTRING subject, FPDF_WIDESTRING cc, FPDF_WIDESTRING bcc, FPDF_WIDESTRING message);
+  static void Form_DisplayCaret(FPDF_FORMFILLINFO* pThis, FPDF_PAGE page, FPDF_BOOL bVisible, double left, double top, double right, double bottom);
+  //static int Form_GetCurDocumentIndex(FPDF_FORMFILLINFO* pThis);
+  //static int Form_GetDocumentCount(FPDF_FORMFILLINFO* pThis);
+  static void Form_SetCurrentPage(FPDF_FORMFILLINFO* pThis, FPDF_DOCUMENT document, int iCurPage);
+  static int Form_GetCurrentPageIndex(FPDF_FORMFILLINFO* pThis, FPDF_DOCUMENT document);
+  static void Form_GetPageViewRect(FPDF_FORMFILLINFO* pThis, FPDF_PAGE page, double* left, double* top, double* right, double* bottom);
+  static int Form_GetPlatform(FPDF_FORMFILLINFO* pThis, void* platform, int length);
+  static FPDF_BOOL Form_PopupMenu(FPDF_FORMFILLINFO* pThis, FPDF_PAGE page, FPDF_WIDGET hWidget, int menuFlag, float x, float y);
+  static FPDF_BOOL Form_PostRequestURL(FPDF_FORMFILLINFO* pThis, FPDF_WIDESTRING wsURL, FPDF_WIDESTRING wsData, FPDF_WIDESTRING wsContentType, FPDF_WIDESTRING wsEncode, FPDF_WIDESTRING wsHeader, FPDF_BSTR* respone);
+  static FPDF_BOOL Form_PutRequestURL(FPDF_FORMFILLINFO* pThis, FPDF_WIDESTRING wsURL, FPDF_WIDESTRING wsData, FPDF_WIDESTRING wsEncode);
+  //static FPDF_BOOL Form_ShowFileDialog(FPDF_FORMFILLINFO* pThis, FPDF_WIDESTRING wsTitle, FPDF_WIDESTRING wsFilter, FPDF_BOOL isOpen, FPDF_STRINGHANDLE pathArr);
+  static void Form_UploadTo(FPDF_FORMFILLINFO* pThis, FPDF_FILEHANDLER* fileHandler, int fileFlag, FPDF_WIDESTRING uploadTo);
+  static FPDF_LPFILEHANDLER Form_DownloadFromURL(FPDF_FORMFILLINFO* pThis, FPDF_WIDESTRING URL);
+  //static FPDF_BOOL MyForm_GetFilePath(FPDF_FORMFILLINFO* pThis, FPDF_FILEHANDLER* pFileHandler, void* filePath, int length);
+  static FPDF_FILEHANDLER* Form_OpenFile(FPDF_FORMFILLINFO* pThis, int fileFlag, FPDF_WIDESTRING wsURL, const char* mode);
+  static void Form_GotoURL(FPDF_FORMFILLINFO* pThis, FPDF_DOCUMENT document, FPDF_WIDESTRING wsURL);
+  static int Form_GetLanguage(FPDF_FORMFILLINFO* pThis, void* language, int length);
+#endif // _TEST_XFA
+  // IFSDK_PAUSE callbacks
+  static FPDF_BOOL Pause_NeedToPauseNow(IFSDK_PAUSE* param);
+
+  PDFEngine::Client* client_;
+  pp::Size document_size_;  // Size of document in pixels.
+
+  // The scroll position in screen coordinates.
+  pp::Point position_;
+  // The offset of the page into the viewport.
+  pp::Point page_offset_;
+  // The plugin size in screen coordinates.
+  pp::Size plugin_size_;
+  double current_zoom_;
+  unsigned int current_rotation_;
+
+  DocumentLoader doc_loader_;  // Main document's loader.
+  std::string url_;
+  std::string headers_;
+  pp::CompletionCallbackFactory<PDFiumEngine> find_factory_;
+
+  pp::CompletionCallbackFactory<PDFiumEngine> password_factory_;
+  int32_t password_tries_remaining_;
+
+  // The current text used for searching.
+  std::string current_find_text_;
+
+  // The PDFium wrapper object for the document.
+  FPDF_DOCUMENT doc_;
+
+  // The PDFium wrapper for form data.  Used even if there are no form controls
+  // on the page.
+  FPDF_FORMHANDLE form_;
+
+  // The page(s) of the document. Store a vector of pointers so that when the
+  // vector is resized we don't close the pages that are used in pending
+  // paints.
+  std::vector<PDFiumPage*> pages_;
+
+  // The indexes of the pages currently visible.
+  std::vector<int> visible_pages_;
+
+  // The indexes of the pages pending download.
+  std::vector<int> pending_pages_;
+
+  // During handling of input events we don't want to unload any pages in
+  // callbacks to us from PDFium, since the current page can change while PDFium
+  // code still has a pointer to it.
+  bool defer_page_unload_;
+  std::vector<int> deferred_page_unloads_;
+
+  // Used for selection.  There could be more than one range if selection spans
+  // more than one page.
+  std::vector<PDFiumRange> selection_;
+  // True if we're in the middle of selection.
+  bool selecting_;
+
+  MouseDownState mouse_down_state_;
+
+  // Used for searching.
+  typedef std::vector<PDFiumRange> FindResults;
+  FindResults find_results_;
+  // Which page to search next.
+  int next_page_to_search_;
+  // Where to stop searching.
+  int last_page_to_search_;
+  int last_character_index_to_search_;  // -1 if search until end of page.
+  // Which result the user has currently selected.
+  int current_find_index_;
+  // Where to resume searching.
+  int resume_find_index_;
+
+  // Permissions bitfield.
+  unsigned long permissions_;
+
+  // Interface structure to provide access to document stream.
+  FPDF_FILEACCESS file_access_;
+  // Interface structure to check data availability in the document stream.
+  FileAvail file_availability_;
+  // Interface structure to request data chunks from the document stream.
+  DownloadHints download_hints_;
+  // Pointer to the document availability interface.
+  FPDF_AVAIL fpdf_availability_;
+
+  pp::Size default_page_size_;
+
+  // Used to manage timers that form fill API needs.  The pair holds the timer
+  // period, in ms, and the callback function.
+  std::map<int, std::pair<int, TimerCallback> > timers_;
+  int next_timer_id_;
+
+  // Holds the page index of the last page that the mouse clicked on.
+  int last_page_mouse_down_;
+
+  // Holds the page index of the first visible page; refreshed by calling
+  // CalculateVisiblePages()
+  int first_visible_page_;
+
+  // Holds the page index of the most visible page; refreshed by calling
+  // CalculateVisiblePages()
+  int most_visible_page_;
+
+  // Set to true after FORM_DoDocumentJSAction/FORM_DoDocumentOpenAction have
+  // been called. Only after that can we call FORM_DoPageAAction.
+  bool called_do_document_action_;
+
+  // Records parts of form fields that need to be highlighted at next paint, in
+  // screen coordinates.
+  std::vector<pp::Rect> form_highlights_;
+
+  // Whether to render in grayscale or in color.
+  bool render_grayscale_;
+
+  // The link currently under the cursor.
+  std::string link_under_cursor_;
+
+  // Pending progressive paints.
+  struct ProgressivePaint {
+    pp::Rect rect;  // In screen coordinates.
+    FPDF_BITMAP bitmap;
+    int page_index;
+    // Temporary used to figure out if in a series of Paint() calls whether this
+    // pending paint was updated or not.
+    int painted_;
+  };
+  std::vector<ProgressivePaint> progressive_paints_;
+
+  // Keeps track of when we started the last progressive paint, so that in our
+  // callback we can determine if we need to pause.
+  base::Time last_progressive_start_time_;
+
+  // The timeout to use for the current progressive paint.
+  int progressive_paint_timeout_;
+
+  // Shadow matrix for generating the page shadow bitmap.
+  scoped_ptr<ShadowMatrix> page_shadow_;
+
+  // Set to true if the user is being prompted for their password. Will be set
+  // to false after the user finishes getting their password.
+  bool getting_password_;
+};
+
+// Create a local variable of this when calling PDFium functions which can call
+// our global callback when an unsupported feature is reached.
+class ScopedUnsupportedFeature {
+ public:
+  explicit ScopedUnsupportedFeature(PDFiumEngine* engine);
+  ~ScopedUnsupportedFeature();
+ private:
+  PDFiumEngine* engine_;
+  PDFiumEngine* old_engine_;
+};
+
+class PDFiumEngineExports : public PDFEngineExports {
+ public:
+  PDFiumEngineExports() {}
+#if defined(OS_WIN)
+  // See the definition of RenderPDFPageToDC in pdf.cc for details.
+  virtual bool RenderPDFPageToDC(const void* pdf_buffer,
+                                 int buffer_size,
+                                 int page_number,
+                                 const RenderingSettings& settings,
+                                 HDC dc);
+#endif  // OS_WIN
+  virtual bool RenderPDFPageToBitmap(const void* pdf_buffer,
+                                     int pdf_buffer_size,
+                                     int page_number,
+                                     const RenderingSettings& settings,
+                                     void* bitmap_buffer);
+
+  virtual bool GetPDFDocInfo(const void* pdf_buffer,
+                             int buffer_size,
+                             int* page_count,
+                             double* max_page_width);
+
+  // See the definition of GetPDFPageSizeByIndex in pdf.cc for details.
+  virtual bool GetPDFPageSizeByIndex(const void* pdf_buffer,
+                                     int pdf_buffer_size, int page_number,
+                                     double* width, double* height);
+};
+
+}  // namespace chrome_pdf
+
+#endif  // PDF_PDFIUM_PDFIUM_ENGINE_H_
diff --git a/xfa_test/pdf/pdfium/pdfium_mem_buffer_file_read.cc b/xfa_test/pdf/pdfium/pdfium_mem_buffer_file_read.cc
new file mode 100644
index 0000000000..b2371b42ff
--- /dev/null
+++ b/xfa_test/pdf/pdfium/pdfium_mem_buffer_file_read.cc
@@ -0,0 +1,34 @@
+// Copyright (c) 2012 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "pdf/pdfium/pdfium_mem_buffer_file_read.h"
+
+#include <string.h>
+
+namespace chrome_pdf {
+
+PDFiumMemBufferFileRead::PDFiumMemBufferFileRead(const void* data,
+                                                 size_t size) {
+  m_FileLen = size;
+  m_Param = this;
+  m_GetBlock = &GetBlock;
+  data_ = reinterpret_cast<const unsigned char*>(data);
+}
+
+PDFiumMemBufferFileRead::~PDFiumMemBufferFileRead() {
+}
+
+int PDFiumMemBufferFileRead::GetBlock(void* param,
+                                      unsigned long position,
+                                      unsigned char* buf,
+                                      unsigned long size) {
+  const PDFiumMemBufferFileRead* data =
+      reinterpret_cast<const PDFiumMemBufferFileRead*>(param);
+  if (!data || position + size > data->m_FileLen)
+    return 0;
+  memcpy(buf, data->data_ + position, size);
+  return 1;
+}
+
+}  // namespace chrome_pdf
diff --git a/xfa_test/pdf/pdfium/pdfium_mem_buffer_file_read.h b/xfa_test/pdf/pdfium/pdfium_mem_buffer_file_read.h
new file mode 100644
index 0000000000..88ec410a6c
--- /dev/null
+++ b/xfa_test/pdf/pdfium/pdfium_mem_buffer_file_read.h
@@ -0,0 +1,30 @@
+// Copyright (c) 2012 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef PDF_PDFIUM_PDFIUM_MEM_BUFFER_FILE_READ_H_
+#define PDF_PDFIUM_PDFIUM_MEM_BUFFER_FILE_READ_H_
+
+#include <stdlib.h>
+
+#include "third_party/pdfium/fpdfsdk/include/fpdfview.h"
+
+namespace chrome_pdf {
+
+// Implementation of FPDF_FILEACCESS from a memory buffer.
+class PDFiumMemBufferFileRead : public FPDF_FILEACCESS {
+ public:
+  PDFiumMemBufferFileRead(const void* data, size_t size);
+  ~PDFiumMemBufferFileRead();
+
+ private:
+  static int GetBlock(void* param,
+                      unsigned long position,
+                      unsigned char* buf,
+                      unsigned long size);
+  const unsigned char* data_;
+};
+
+}  // namespace chrome_pdf
+
+#endif  // PDF_PDFIUM_PDFIUM_MEM_BUFFER_FILE_READ_H_
diff --git a/xfa_test/pdf/pdfium/pdfium_mem_buffer_file_write.cc b/xfa_test/pdf/pdfium/pdfium_mem_buffer_file_write.cc
new file mode 100644
index 0000000000..45e564b67b
--- /dev/null
+++ b/xfa_test/pdf/pdfium/pdfium_mem_buffer_file_write.cc
@@ -0,0 +1,33 @@
+// Copyright (c) 2010 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "pdf/pdfium/pdfium_mem_buffer_file_write.h"
+
+namespace chrome_pdf {
+
+PDFiumMemBufferFileWrite::PDFiumMemBufferFileWrite() {
+  version = 1;
+  WriteBlock = &WriteBlockImpl;
+}
+
+PDFiumMemBufferFileWrite::~PDFiumMemBufferFileWrite() {
+}
+
+int PDFiumMemBufferFileWrite::WriteBlockImpl(FPDF_FILEWRITE* this_file_write,
+                                             const void* data,
+                                             unsigned long size) {
+  PDFiumMemBufferFileWrite* mem_buffer_file_write =
+      static_cast<PDFiumMemBufferFileWrite*>(this_file_write);
+  return mem_buffer_file_write->DoWriteBlock(data, size);
+}
+
+int PDFiumMemBufferFileWrite::DoWriteBlock(const void* data,
+                                           unsigned long size) {
+  buffer_.append(static_cast<const unsigned char*>(data), size);
+  return 1;
+}
+
+
+}  // namespace chrome_pdf
+
diff --git a/xfa_test/pdf/pdfium/pdfium_mem_buffer_file_write.h b/xfa_test/pdf/pdfium/pdfium_mem_buffer_file_write.h
new file mode 100644
index 0000000000..1795c83e89
--- /dev/null
+++ b/xfa_test/pdf/pdfium/pdfium_mem_buffer_file_write.h
@@ -0,0 +1,34 @@
+// Copyright (c) 2010 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef PDF_PDFIUM_PDFIUM_MEM_BUFFER_FILE_WRITE_
+#define PDF_PDFIUM_PDFIUM_MEM_BUFFER_FILE_WRITE_
+
+#include <string>
+
+#include "third_party/pdfium/fpdfsdk/include/fpdfsave.h"
+
+namespace chrome_pdf {
+
+// Implementation of FPDF_FILEWRITE into a memory buffer.
+class PDFiumMemBufferFileWrite : public FPDF_FILEWRITE {
+ public:
+  PDFiumMemBufferFileWrite();
+  ~PDFiumMemBufferFileWrite();
+
+  const std::basic_string<unsigned char>& buffer() { return buffer_; }
+  size_t size() { return buffer_.size(); }
+
+ private:
+  int DoWriteBlock(const void* data, unsigned long size);
+  static int WriteBlockImpl(FPDF_FILEWRITE* this_file_write, const void* data,
+                            unsigned long size);
+
+  std::basic_string<unsigned char> buffer_;
+};
+
+}  // namespace chrome_pdf
+
+#endif  // PDF_PDFIUM_PDFIUM_MEM_BUFFER_FILE_WRITE_
+
diff --git a/xfa_test/pdf/pdfium/pdfium_page.cc b/xfa_test/pdf/pdfium/pdfium_page.cc
new file mode 100644
index 0000000000..d8a5dce5a2
--- /dev/null
+++ b/xfa_test/pdf/pdfium/pdfium_page.cc
@@ -0,0 +1,477 @@
+// Copyright (c) 2010 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "pdf/pdfium/pdfium_page.h"
+
+#include <math.h>
+
+#include "base/logging.h"
+#include "base/strings/string_number_conversions.h"
+#include "base/strings/string_util.h"
+#include "base/strings/utf_string_conversions.h"
+#include "base/values.h"
+#include "pdf/pdfium/pdfium_engine.h"
+
+// Used when doing hit detection.
+#define kTolerance 20.0
+
+// Dictionary Value key names for returning the accessible page content as JSON.
+const char kPageWidth[] = "width";
+const char kPageHeight[] = "height";
+const char kPageTextBox[] = "textBox";
+const char kTextBoxLeft[] = "left";
+const char kTextBoxTop[]  = "top";
+const char kTextBoxWidth[] = "width";
+const char kTextBoxHeight[]  = "height";
+const char kTextBoxFontSize[] = "fontSize";
+const char kTextBoxNodes[] = "textNodes";
+const char kTextNodeType[] = "type";
+const char kTextNodeText[] = "text";
+const char kTextNodeURL[] = "url";
+const char kTextNodeTypeText[] = "text";
+const char kTextNodeTypeURL[] = "url";
+const char kDocLinkURLPrefix[] = "#page";
+
+namespace chrome_pdf {
+
+PDFiumPage::PDFiumPage(PDFiumEngine* engine,
+                       int i,
+                       const pp::Rect& r,
+                       bool available)
+    : engine_(engine),
+      page_(NULL),
+      text_page_(NULL),
+      index_(i),
+      rect_(r),
+      calculated_links_(false),
+      available_(available) {
+}
+
+PDFiumPage::~PDFiumPage() {
+}
+
+void PDFiumPage::Unload() {
+  if (text_page_) {
+    FPDFText_ClosePage(text_page_);
+    text_page_ = NULL;
+  }
+
+  if (page_) {
+    if (engine_->form()) {
+      FORM_OnBeforeClosePage(page_, engine_->form());
+    }
+    FPDF_ClosePage(page_);
+    page_ = NULL;
+  }
+}
+
+FPDF_PAGE PDFiumPage::GetPage() {
+  ScopedUnsupportedFeature scoped_unsupported_feature(engine_);
+  if (!available_)
+    return NULL;
+  if (!page_) {
+    page_ = FPDF_LoadPage(engine_->doc(), index_);
+    if (page_ && engine_->form()) {
+      FORM_OnAfterLoadPage(page_, engine_->form());
+    }
+  }
+  return page_;
+}
+
+FPDF_PAGE PDFiumPage::GetPrintPage() {
+  ScopedUnsupportedFeature scoped_unsupported_feature(engine_);
+  if (!available_)
+    return NULL;
+  if (!page_)
+    page_ = FPDF_LoadPage(engine_->doc(), index_);
+  return page_;
+}
+
+void PDFiumPage::ClosePrintPage() {
+  if (page_) {
+    FPDF_ClosePage(page_);
+    page_ = NULL;
+  }
+}
+
+FPDF_TEXTPAGE PDFiumPage::GetTextPage() {
+  if (!available_)
+    return NULL;
+  if (!text_page_)
+    text_page_ = FPDFText_LoadPage(GetPage());
+  return text_page_;
+}
+
+base::Value* PDFiumPage::GetAccessibleContentAsValue(int rotation) {
+  base::DictionaryValue* node = new base::DictionaryValue();
+
+  if (!available_)
+    return node;
+
+  double width = FPDF_GetPageWidth(GetPage());
+  double height = FPDF_GetPageHeight(GetPage());
+
+  base::ListValue* text = new base::ListValue();
+  int box_count = FPDFText_CountRects(GetTextPage(), 0, GetCharCount());
+  for (int i = 0; i < box_count; i++) {
+    double left, top, right, bottom;
+    FPDFText_GetRect(GetTextPage(), i, &left, &top, &right, &bottom);
+    text->Append(
+        GetTextBoxAsValue(height, left, top, right, bottom, rotation));
+  }
+
+  node->SetDouble(kPageWidth, width);
+  node->SetDouble(kPageHeight, height);
+  node->Set(kPageTextBox, text);  // Takes ownership of |text|
+
+  return node;
+}
+
+base::Value* PDFiumPage::GetTextBoxAsValue(double page_height,
+                                           double left, double top,
+                                           double right, double bottom,
+                                           int rotation) {
+  base::string16 text_utf16;
+  int char_count =
+    FPDFText_GetBoundedText(GetTextPage(), left, top, right, bottom, NULL, 0);
+  if (char_count > 0) {
+    unsigned short* data = reinterpret_cast<unsigned short*>(
+        WriteInto(&text_utf16, char_count + 1));
+    FPDFText_GetBoundedText(GetTextPage(),
+                            left, top, right, bottom,
+                            data, char_count);
+  }
+  std::string text_utf8 = base::UTF16ToUTF8(text_utf16);
+
+  FPDF_LINK link = FPDFLink_GetLinkAtPoint(GetPage(), left, top);
+  Area area;
+  std::vector<LinkTarget> targets;
+  if (link) {
+    targets.push_back(LinkTarget());
+    area = GetLinkTarget(link, &targets[0]);
+  } else {
+    pp::Rect rect(
+        PageToScreen(pp::Point(), 1.0, left, top, right, bottom, rotation));
+    GetLinks(rect, &targets);
+    area = targets.size() == 0 ? TEXT_AREA : WEBLINK_AREA;
+  }
+
+  int char_index = FPDFText_GetCharIndexAtPos(GetTextPage(), left, top,
+                                              kTolerance, kTolerance);
+  double font_size = FPDFText_GetFontSize(GetTextPage(), char_index);
+
+  base::DictionaryValue* node = new base::DictionaryValue();
+  node->SetDouble(kTextBoxLeft, left);
+  node->SetDouble(kTextBoxTop, page_height - top);
+  node->SetDouble(kTextBoxWidth, right - left);
+  node->SetDouble(kTextBoxHeight, top - bottom);
+  node->SetDouble(kTextBoxFontSize, font_size);
+
+  base::ListValue* text_nodes = new base::ListValue();
+
+  if (area == DOCLINK_AREA) {
+    std::string url = kDocLinkURLPrefix + base::IntToString(targets[0].page);
+    text_nodes->Append(CreateURLNode(text_utf8, url));
+  } else if (area == WEBLINK_AREA && link) {
+    text_nodes->Append(CreateURLNode(text_utf8, targets[0].url));
+  } else if (area == WEBLINK_AREA && !link) {
+    size_t start = 0;
+    for (size_t i = 0; i < targets.size(); ++i) {
+      // Remove the extra NULL character at end.
+      // Otherwise, find() will not return any matches.
+      if (targets[i].url.size() > 0 &&
+          targets[i].url[targets[i].url.size() - 1] == '\0') {
+        targets[i].url.resize(targets[i].url.size() - 1);
+      }
+      // There should only ever be one NULL character
+      DCHECK(targets[i].url[targets[i].url.size() - 1] != '\0');
+
+      // PDFium may change the case of generated links.
+      std::string lowerCaseURL = base::StringToLowerASCII(targets[i].url);
+      std::string lowerCaseText = base::StringToLowerASCII(text_utf8);
+      size_t pos = lowerCaseText.find(lowerCaseURL, start);
+      size_t length = targets[i].url.size();
+      if (pos == std::string::npos) {
+        // Check if the link is a "mailto:" URL
+        if (lowerCaseURL.compare(0, 7, "mailto:") == 0) {
+          pos = lowerCaseText.find(lowerCaseURL.substr(7), start);
+          length -= 7;
+        }
+
+        if (pos == std::string::npos) {
+          // No match has been found.  This should never happen.
+          continue;
+        }
+      }
+
+      std::string before_text = text_utf8.substr(start, pos - start);
+      if (before_text.size() > 0)
+        text_nodes->Append(CreateTextNode(before_text));
+      std::string link_text = text_utf8.substr(pos, length);
+      text_nodes->Append(CreateURLNode(link_text, targets[i].url));
+
+      start = pos + length;
+    }
+    std::string before_text = text_utf8.substr(start);
+    if (before_text.size() > 0)
+      text_nodes->Append(CreateTextNode(before_text));
+  } else {
+    text_nodes->Append(CreateTextNode(text_utf8));
+  }
+
+  node->Set(kTextBoxNodes, text_nodes);  // Takes ownership of |text_nodes|.
+  return node;
+}
+
+base::Value* PDFiumPage::CreateTextNode(std::string text) {
+  base::DictionaryValue* node = new base::DictionaryValue();
+  node->SetString(kTextNodeType, kTextNodeTypeText);
+  node->SetString(kTextNodeText, text);
+  return node;
+}
+
+base::Value* PDFiumPage::CreateURLNode(std::string text, std::string url) {
+  base::DictionaryValue* node = new base::DictionaryValue();
+  node->SetString(kTextNodeType, kTextNodeTypeURL);
+  node->SetString(kTextNodeText, text);
+  node->SetString(kTextNodeURL, url);
+  return node;
+}
+
+PDFiumPage::Area PDFiumPage::GetCharIndex(const pp::Point& point,
+                                          int rotation,
+                                          int* char_index,
+                                          LinkTarget* target) {
+  if (!available_)
+    return NONSELECTABLE_AREA;
+  pp::Point point2 = point - rect_.point();
+  double new_x, new_y;
+  FPDF_DeviceToPage(GetPage(), 0, 0, rect_.width(), rect_.height(),
+        rotation, point2.x(), point2.y(), &new_x, &new_y);
+
+  int rv = FPDFText_GetCharIndexAtPos(
+      GetTextPage(), new_x, new_y, kTolerance, kTolerance);
+  *char_index = rv;
+
+  FPDF_LINK link = FPDFLink_GetLinkAtPoint(GetPage(), new_x, new_y);
+  if (link) {
+    // We don't handle all possible link types of the PDF. For example,
+    // launch actions, cross-document links, etc.
+    // In that case, GetLinkTarget() will return NONSELECTABLE_AREA
+    // and we should proceed with area detection.
+    PDFiumPage::Area area = GetLinkTarget(link, target);
+    if (area != PDFiumPage::NONSELECTABLE_AREA)
+      return area;
+  }
+
+  if (rv < 0)
+    return NONSELECTABLE_AREA;
+
+  return GetLink(*char_index, target) != -1 ? WEBLINK_AREA : TEXT_AREA;
+}
+
+base::char16 PDFiumPage::GetCharAtIndex(int index) {
+  if (!available_)
+    return L'\0';
+  return static_cast<base::char16>(FPDFText_GetUnicode(GetTextPage(), index));
+}
+
+int PDFiumPage::GetCharCount() {
+  if (!available_)
+    return 0;
+  return FPDFText_CountChars(GetTextPage());
+}
+
+PDFiumPage::Area PDFiumPage::GetLinkTarget(
+    FPDF_LINK link, PDFiumPage::LinkTarget* target) {
+  FPDF_DEST dest = FPDFLink_GetDest(engine_->doc(), link);
+  if (dest != NULL)
+    return GetDestinationTarget(dest, target);
+
+  FPDF_ACTION action = FPDFLink_GetAction(link);
+  if (action) {
+    switch (FPDFAction_GetType(action)) {
+      case PDFACTION_GOTO: {
+          FPDF_DEST dest = FPDFAction_GetDest(engine_->doc(), action);
+          if (dest)
+            return GetDestinationTarget(dest, target);
+          // TODO(gene): We don't fully support all types of the in-document
+          // links. Need to implement that. There is a bug to track that:
+          // http://code.google.com/p/chromium/issues/detail?id=55776
+        } break;
+      case PDFACTION_URI: {
+          if (target) {
+            size_t buffer_size =
+                FPDFAction_GetURIPath(engine_->doc(), action, NULL, 0);
+            if (buffer_size > 1) {
+              void* data = WriteInto(&target->url, buffer_size + 1);
+              FPDFAction_GetURIPath(engine_->doc(), action, data, buffer_size);
+            }
+          }
+          return WEBLINK_AREA;
+        } break;
+      // TODO(gene): We don't support PDFACTION_REMOTEGOTO and PDFACTION_LAUNCH
+      // at the moment.
+    }
+  }
+
+  return NONSELECTABLE_AREA;
+}
+
+PDFiumPage::Area PDFiumPage::GetDestinationTarget(
+    FPDF_DEST destination, PDFiumPage::LinkTarget* target) {
+  int page_index = FPDFDest_GetPageIndex(engine_->doc(), destination);
+  if (target) {
+    target->page = page_index;
+  }
+  return DOCLINK_AREA;
+}
+
+int PDFiumPage::GetLink(int char_index, PDFiumPage::LinkTarget* target) {
+  if (!available_)
+    return -1;
+
+  CalculateLinks();
+
+  // Get the bounding box of the rect again, since it might have moved because
+  // of the tolerance above.
+  double left, right, bottom, top;
+  FPDFText_GetCharBox(GetTextPage(), char_index, &left, &right, &bottom, &top);
+
+  pp::Point origin(
+      PageToScreen(pp::Point(), 1.0, left, top, right, bottom, 0).point());
+  for (size_t i = 0; i < links_.size(); ++i) {
+    for (size_t j = 0; j < links_[i].rects.size(); ++j) {
+      if (links_[i].rects[j].Contains(origin)) {
+        if (target)
+          target->url = links_[i].url;
+        return i;
+      }
+    }
+  }
+  return -1;
+}
+
+std::vector<int> PDFiumPage::GetLinks(pp::Rect text_area,
+                                      std::vector<LinkTarget>* targets) {
+  if (!available_)
+    return std::vector<int>();
+
+  CalculateLinks();
+
+  std::vector<int> links;
+
+  for (size_t i = 0; i < links_.size(); ++i) {
+    for (size_t j = 0; j < links_[i].rects.size(); ++j) {
+      if (links_[i].rects[j].Intersects(text_area)) {
+        if (targets) {
+          LinkTarget target;
+          target.url = links_[i].url;
+          targets->push_back(target);
+        }
+        links.push_back(i);
+      }
+    }
+  }
+  return links;
+}
+
+void PDFiumPage::CalculateLinks() {
+  if (calculated_links_)
+    return;
+
+  calculated_links_ = true;
+  FPDF_PAGELINK links = FPDFLink_LoadWebLinks(GetTextPage());
+  int count = FPDFLink_CountWebLinks(links);
+  for (int i = 0; i < count; ++i) {
+    base::string16 url;
+    int url_length = FPDFLink_GetURL(links, i, NULL, 0);
+    if (url_length > 1) {  // WriteInto needs at least 2 characters.
+      unsigned short* data =
+          reinterpret_cast<unsigned short*>(WriteInto(&url, url_length + 1));
+      FPDFLink_GetURL(links, i, data, url_length);
+    }
+    Link link;
+    link.url = base::UTF16ToUTF8(url);
+
+    // If the link cannot be converted to a pp::Var, then it is not possible to
+    // pass it to JS. In this case, ignore the link like other PDF viewers.
+    // See http://crbug.com/312882 for an example.
+    pp::Var link_var(link.url);
+    if (!link_var.is_string())
+      continue;
+
+    // Make sure all the characters in the URL are valid per RFC 1738.
+    // http://crbug.com/340326 has a sample bad PDF.
+    // GURL does not work correctly, e.g. it just strips \t \r \n.
+    bool is_invalid_url = false;
+    for (size_t j = 0; j < link.url.length(); ++j) {
+      // Control characters are not allowed.
+      // 0x7F is also a control character.
+      // 0x80 and above are not in US-ASCII.
+      if (link.url[j] < ' ' || link.url[j] >= '\x7F') {
+        is_invalid_url = true;
+        break;
+      }
+    }
+    if (is_invalid_url)
+      continue;
+
+    int rect_count = FPDFLink_CountRects(links, i);
+    for (int j = 0; j < rect_count; ++j) {
+      double left, top, right, bottom;
+      FPDFLink_GetRect(links, i, j, &left, &top, &right, &bottom);
+      link.rects.push_back(
+          PageToScreen(pp::Point(), 1.0, left, top, right, bottom, 0));
+    }
+    links_.push_back(link);
+  }
+  FPDFLink_CloseWebLinks(links);
+}
+
+pp::Rect PDFiumPage::PageToScreen(const pp::Point& offset,
+                                  double zoom,
+                                  double left,
+                                  double top,
+                                  double right,
+                                  double bottom,
+                                  int rotation) {
+  if (!available_)
+    return pp::Rect();
+
+  int new_left, new_top, new_right, new_bottom;
+  FPDF_PageToDevice(
+      page_,
+      static_cast<int>((rect_.x() - offset.x()) * zoom),
+      static_cast<int>((rect_.y() - offset.y()) * zoom),
+      static_cast<int>(ceil(rect_.width() * zoom)),
+      static_cast<int>(ceil(rect_.height() * zoom)),
+      rotation, left, top, &new_left, &new_top);
+  FPDF_PageToDevice(
+      page_,
+      static_cast<int>((rect_.x() - offset.x()) * zoom),
+      static_cast<int>((rect_.y() - offset.y()) * zoom),
+      static_cast<int>(ceil(rect_.width() * zoom)),
+      static_cast<int>(ceil(rect_.height() * zoom)),
+      rotation, right, bottom, &new_right, &new_bottom);
+
+  // If the PDF is rotated, the horizontal/vertical coordinates could be
+  // flipped.  See
+  // http://www.netl.doe.gov/publications/proceedings/03/ubc/presentations/Goeckner-pres.pdf
+  if (new_right < new_left)
+    std::swap(new_right, new_left);
+  if (new_bottom < new_top)
+    std::swap(new_bottom, new_top);
+
+  return pp::Rect(
+      new_left, new_top, new_right - new_left + 1, new_bottom - new_top + 1);
+}
+
+PDFiumPage::Link::Link() {
+}
+
+PDFiumPage::Link::~Link() {
+}
+
+}  // namespace chrome_pdf
diff --git a/xfa_test/pdf/pdfium/pdfium_page.h b/xfa_test/pdf/pdfium/pdfium_page.h
new file mode 100644
index 0000000000..22ea142988
--- /dev/null
+++ b/xfa_test/pdf/pdfium/pdfium_page.h
@@ -0,0 +1,136 @@
+// Copyright (c) 2010 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef PDF_PDFIUM_PDFIUM_PAGE_H_
+#define PDF_PDFIUM_PDFIUM_PAGE_H_
+
+#include <string>
+#include <vector>
+
+#include "base/strings/string16.h"
+#include "ppapi/cpp/rect.h"
+#include "third_party/pdfium/fpdfsdk/include/fpdfdoc.h"
+#include "third_party/pdfium/fpdfsdk/include/fpdfformfill.h"
+#include "third_party/pdfium/fpdfsdk/include/fpdftext.h"
+
+namespace base {
+class Value;
+}
+
+namespace chrome_pdf {
+
+class PDFiumEngine;
+
+// Wrapper around a page from the document.
+class PDFiumPage {
+ public:
+  PDFiumPage(PDFiumEngine* engine,
+             int i,
+             const pp::Rect& r,
+             bool available);
+  ~PDFiumPage();
+  // Unloads the PDFium data for this page from memory.
+  void Unload();
+  // Gets the FPDF_PAGE for this page, loading and parsing it if necessary.
+  FPDF_PAGE GetPage();
+  //Get the FPDF_PAGE for printing.
+  FPDF_PAGE GetPrintPage();
+  //Close the printing page.
+  void ClosePrintPage();
+
+  // Returns FPDF_TEXTPAGE for the page, loading and parsing it if necessary.
+  FPDF_TEXTPAGE GetTextPage();
+
+  // Returns a DictionaryValue version of the page.
+  base::Value* GetAccessibleContentAsValue(int rotation);
+
+  enum Area {
+    NONSELECTABLE_AREA,
+    TEXT_AREA,
+    WEBLINK_AREA,  // Area is a hyperlink.
+    DOCLINK_AREA,  // Area is a link to a different part of the same document.
+  };
+
+  struct LinkTarget {
+    // We are using std::string here which have a copy contructor.
+    // That prevents us from using union here.
+    std::string url;  // Valid for WEBLINK_AREA only.
+    int page;         // Valid for DOCLINK_AREA only.
+  };
+
+  // Given a point in the document that's in this page, returns its character
+  // index if it's near a character, and also the type of text.
+  // Target is optional. It will be filled in for WEBLINK_AREA or
+  // DOCLINK_AREA only.
+  Area GetCharIndex(const pp::Point& point, int rotation, int* char_index,
+                    LinkTarget* target);
+
+  // Gets the character at the given index.
+  base::char16 GetCharAtIndex(int index);
+
+  // Gets the number of characters in the page.
+  int GetCharCount();
+
+  // Converts from page coordinates to screen coordinates.
+  pp::Rect PageToScreen(const pp::Point& offset,
+                        double zoom,
+                        double left,
+                        double top,
+                        double right,
+                        double bottom,
+                        int rotation);
+
+  int index() const { return index_; }
+  pp::Rect rect() const { return rect_; }
+  void set_rect(const pp::Rect& r) { rect_ = r; }
+  bool available() const { return available_; }
+  void set_available(bool available) { available_ = available; }
+  void set_calculated_links(bool calculated_links) {
+     calculated_links_ = calculated_links;
+  }
+
+ private:
+  // Returns a link index if the given character index is over a link, or -1
+  // otherwise.
+  int GetLink(int char_index, LinkTarget* target);
+  // Returns the link indices if the given rect intersects a link rect, or an
+  // empty vector otherwise.
+  std::vector<int> GetLinks(pp::Rect text_area,
+                            std::vector<LinkTarget>* targets);
+  // Calculate the locations of any links on the page.
+  void CalculateLinks();
+  // Returns link type and target associated with a link. Returns
+  // NONSELECTABLE_AREA if link detection failed.
+  Area GetLinkTarget(FPDF_LINK link, LinkTarget* target);
+  // Returns target associated with a destination.
+  Area GetDestinationTarget(FPDF_DEST destination, LinkTarget* target);
+  // Returns the text in the supplied box as a Value Node
+  base::Value* GetTextBoxAsValue(double page_height, double left, double top,
+                                 double right, double bottom, int rotation);
+  // Helper functions for JSON generation
+  base::Value* CreateTextNode(std::string text);
+  base::Value* CreateURLNode(std::string text, std::string url);
+
+  struct Link {
+    Link();
+    ~Link();
+
+    std::string url;
+    // Bounding rectangles of characters.
+    std::vector<pp::Rect> rects;
+  };
+
+  PDFiumEngine* engine_;
+  FPDF_PAGE page_;
+  FPDF_TEXTPAGE text_page_;
+  int index_;
+  pp::Rect rect_;
+  bool calculated_links_;
+  std::vector<Link> links_;
+  bool available_;
+};
+
+}  // namespace chrome_pdf
+
+#endif  // PDF_PDFIUM_PDFIUM_PAGE_H_
diff --git a/xfa_test/pdf/pdfium/pdfium_range.cc b/xfa_test/pdf/pdfium/pdfium_range.cc
new file mode 100644
index 0000000000..c77d5906dd
--- /dev/null
+++ b/xfa_test/pdf/pdfium/pdfium_range.cc
@@ -0,0 +1,79 @@
+// Copyright (c) 2010 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "pdf/pdfium/pdfium_range.h"
+
+#include "base/logging.h"
+#include "base/strings/string_util.h"
+
+namespace chrome_pdf {
+
+PDFiumRange::PDFiumRange(PDFiumPage* page, int char_index, int char_count)
+    : page_(page),
+      char_index_(char_index),
+      char_count_(char_count),
+      cached_screen_rects_zoom_(0) {
+}
+
+PDFiumRange::~PDFiumRange() {
+}
+
+void PDFiumRange::SetCharCount(int char_count) {
+  char_count_ = char_count;
+
+  cached_screen_rects_offset_ = pp::Point();
+  cached_screen_rects_zoom_ = 0;
+}
+
+std::vector<pp::Rect> PDFiumRange::GetScreenRects(const pp::Point& offset,
+                                                  double zoom,
+                                                  int rotation) {
+  if (offset == cached_screen_rects_offset_ &&
+      zoom == cached_screen_rects_zoom_) {
+    return cached_screen_rects_;
+  }
+
+  cached_screen_rects_.clear();
+  cached_screen_rects_offset_ = offset;
+  cached_screen_rects_zoom_ = zoom;
+
+  int char_index = char_index_;
+  int char_count = char_count_;
+  if (char_count < 0) {
+    char_count *= -1;
+    char_index -= char_count - 1;
+  }
+
+  int count = FPDFText_CountRects(page_->GetTextPage(), char_index, char_count);
+  for (int i = 0; i < count; ++i) {
+    double left, top, right, bottom;
+    FPDFText_GetRect(page_->GetTextPage(), i, &left, &top, &right, &bottom);
+    cached_screen_rects_.push_back(
+        page_->PageToScreen(offset, zoom, left, top, right, bottom, rotation));
+  }
+
+  return cached_screen_rects_;
+}
+
+base::string16 PDFiumRange::GetText() {
+  int index = char_index_;
+  int count = char_count_;
+  if (!count)
+    return base::string16();
+  if (count < 0) {
+    count *= -1;
+    index -= count - 1;
+  }
+
+  base::string16 rv;
+  unsigned short* data =
+      reinterpret_cast<unsigned short*>(WriteInto(&rv, count + 1));
+  if (data) {
+    int written = FPDFText_GetText(page_->GetTextPage(), index, count, data);
+    rv.reserve(written);
+  }
+  return rv;
+}
+
+}  // namespace chrome_pdf
diff --git a/xfa_test/pdf/pdfium/pdfium_range.h b/xfa_test/pdf/pdfium/pdfium_range.h
new file mode 100644
index 0000000000..ed8daf65bb
--- /dev/null
+++ b/xfa_test/pdf/pdfium/pdfium_range.h
@@ -0,0 +1,54 @@
+// Copyright (c) 2010 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef PDF_PDFIUM_PDFIUM_RANGE_H_
+#define PDF_PDFIUM_PDFIUM_RANGE_H_
+
+#include <string>
+#include <vector>
+
+#include "base/strings/string16.h"
+#include "pdf/pdfium/pdfium_page.h"
+#include "ppapi/cpp/rect.h"
+
+namespace chrome_pdf {
+
+// Describes location of a string of characters.
+class PDFiumRange {
+ public:
+  PDFiumRange(PDFiumPage* page, int char_index, int char_count);
+  ~PDFiumRange();
+
+  // Update how many characters are in the selection.  Could be negative if
+  // backwards.
+  void SetCharCount(int char_count);
+
+  int page_index() const { return page_->index(); }
+  int char_index() const { return char_index_; }
+  int char_count() const { return char_count_; }
+
+  // Gets bounding rectangles of range in screen coordinates.
+  std::vector<pp::Rect> GetScreenRects(const pp::Point& offset,
+                                       double zoom,
+                                       int rotation);
+
+  // Gets the string of characters in this range.
+  base::string16 GetText();
+
+ private:
+  PDFiumPage* page_;
+  // Index of first character.
+  int char_index_;
+  // How many characters are part of this range (negative if  backwards).
+  int char_count_;
+
+  // Cache of ScreenRect, and the associated variables used when caching it.
+  std::vector<pp::Rect> cached_screen_rects_;
+  pp::Point cached_screen_rects_offset_;
+  double cached_screen_rects_zoom_;
+};
+
+}  // namespace chrome_pdf
+
+#endif  // PDF_PDFIUM_PDFIUM_RANGE_H_
diff --git a/xfa_test/pdf/preview_mode_client.cc b/xfa_test/pdf/preview_mode_client.cc
new file mode 100644
index 0000000000..8b9919b46e
--- /dev/null
+++ b/xfa_test/pdf/preview_mode_client.cc
@@ -0,0 +1,162 @@
+// Copyright (c) 2011 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "pdf/preview_mode_client.h"
+
+#include "base/logging.h"
+#include "pdf/instance.h"
+
+namespace chrome_pdf {
+
+PreviewModeClient::PreviewModeClient(Client* client)
+    : client_(client) {
+}
+
+void PreviewModeClient::DocumentSizeUpdated(const pp::Size& size) {
+}
+
+void PreviewModeClient::Invalidate(const pp::Rect& rect) {
+  NOTREACHED();
+}
+
+void PreviewModeClient::Scroll(const pp::Point& point) {
+  NOTREACHED();
+}
+
+void PreviewModeClient::ScrollToX(int position) {
+  NOTREACHED();
+}
+
+void PreviewModeClient::ScrollToY(int position) {
+  NOTREACHED();
+}
+
+void PreviewModeClient::ScrollToPage(int page) {
+  NOTREACHED();
+}
+
+void PreviewModeClient::NavigateTo(const std::string& url,
+                                   bool open_in_new_tab) {
+  NOTREACHED();
+}
+
+void PreviewModeClient::UpdateCursor(PP_CursorType_Dev cursor) {
+  NOTREACHED();
+}
+
+void PreviewModeClient::UpdateTickMarks(
+    const std::vector<pp::Rect>& tickmarks) {
+  NOTREACHED();
+}
+
+void PreviewModeClient::NotifyNumberOfFindResultsChanged(int total,
+                                                         bool final_result) {
+  NOTREACHED();
+}
+
+void PreviewModeClient::NotifySelectedFindResultChanged(
+    int current_find_index) {
+  NOTREACHED();
+}
+
+void PreviewModeClient::GetDocumentPassword(
+    pp::CompletionCallbackWithOutput<pp::Var> callback) {
+  callback.Run(PP_ERROR_FAILED);
+}
+
+void PreviewModeClient::Alert(const std::string& message) {
+  NOTREACHED();
+}
+
+bool PreviewModeClient::Confirm(const std::string& message) {
+  NOTREACHED();
+  return false;
+}
+
+std::string PreviewModeClient::Prompt(const std::string& question,
+                                      const std::string& default_answer) {
+  NOTREACHED();
+  return std::string();
+}
+
+std::string PreviewModeClient::GetURL() {
+  NOTREACHED();
+  return std::string();
+}
+
+void PreviewModeClient::Email(const std::string& to,
+                              const std::string& cc,
+                              const std::string& bcc,
+                              const std::string& subject,
+                              const std::string& body) {
+  NOTREACHED();
+}
+
+void PreviewModeClient::Print() {
+  NOTREACHED();
+}
+
+void PreviewModeClient::SubmitForm(const std::string& url,
+                                   const void* data,
+                                   int length) {
+  NOTREACHED();
+}
+
+std::string PreviewModeClient::ShowFileSelectionDialog() {
+  NOTREACHED();
+  return std::string();
+}
+
+pp::URLLoader PreviewModeClient::CreateURLLoader() {
+  NOTREACHED();
+  return pp::URLLoader();
+}
+
+void PreviewModeClient::ScheduleCallback(int id, int delay_in_ms) {
+  NOTREACHED();
+}
+
+void PreviewModeClient::SearchString(const base::char16* string,
+                                     const base::char16* term,
+                                     bool case_sensitive,
+                                     std::vector<SearchStringResult>* results) {
+  NOTREACHED();
+}
+
+void PreviewModeClient::DocumentPaintOccurred() {
+  NOTREACHED();
+}
+
+void PreviewModeClient::DocumentLoadComplete(int page_count) {
+  client_->PreviewDocumentLoadComplete();
+}
+
+void PreviewModeClient::DocumentLoadFailed() {
+  client_->PreviewDocumentLoadFailed();
+}
+
+pp::Instance* PreviewModeClient::GetPluginInstance() {
+  NOTREACHED();
+  return NULL;
+}
+
+void PreviewModeClient::DocumentHasUnsupportedFeature(
+    const std::string& feature) {
+  NOTREACHED();
+}
+
+void PreviewModeClient::DocumentLoadProgress(uint32 available,
+                                             uint32 doc_size) {
+}
+
+void PreviewModeClient::FormTextFieldFocusChange(bool in_focus) {
+  NOTREACHED();
+}
+
+bool PreviewModeClient::IsPrintPreview() {
+  NOTREACHED();
+  return false;
+}
+
+}  // namespace chrome_pdf
diff --git a/xfa_test/pdf/preview_mode_client.h b/xfa_test/pdf/preview_mode_client.h
new file mode 100644
index 0000000000..0e766f949f
--- /dev/null
+++ b/xfa_test/pdf/preview_mode_client.h
@@ -0,0 +1,77 @@
+// Copyright (c) 2011 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef PDF_PREVIEW_MODE_CLIENT_H_
+#define PDF_PREVIEW_MODE_CLIENT_H_
+
+#include <string>
+#include <vector>
+
+#include "pdf/pdf_engine.h"
+
+namespace chrome_pdf {
+
+// The interface that's provided to the print preview rendering engine.
+class PreviewModeClient : public PDFEngine::Client {
+ public:
+  class Client {
+   public:
+    virtual void PreviewDocumentLoadFailed() = 0;
+    virtual void PreviewDocumentLoadComplete() = 0;
+  };
+  explicit PreviewModeClient(Client* client);
+  virtual ~PreviewModeClient() {}
+
+  // PDFEngine::Client implementation.
+  virtual void DocumentSizeUpdated(const pp::Size& size);
+  virtual void Invalidate(const pp::Rect& rect);
+  virtual void Scroll(const pp::Point& point);
+  virtual void ScrollToX(int position);
+  virtual void ScrollToY(int position);
+  virtual void ScrollToPage(int page);
+  virtual void NavigateTo(const std::string& url, bool open_in_new_tab);
+  virtual void UpdateCursor(PP_CursorType_Dev cursor);
+  virtual void UpdateTickMarks(const std::vector<pp::Rect>& tickmarks);
+  virtual void NotifyNumberOfFindResultsChanged(int total,
+                                                bool final_result);
+  virtual void NotifySelectedFindResultChanged(int current_find_index);
+  virtual void GetDocumentPassword(
+      pp::CompletionCallbackWithOutput<pp::Var> callback);
+  virtual void Alert(const std::string& message);
+  virtual bool Confirm(const std::string& message);
+  virtual std::string Prompt(const std::string& question,
+                             const std::string& default_answer);
+  virtual std::string GetURL();
+  virtual void Email(const std::string& to,
+                     const std::string& cc,
+                     const std::string& bcc,
+                     const std::string& subject,
+                     const std::string& body);
+  virtual void Print();
+  virtual void SubmitForm(const std::string& url,
+                          const void* data,
+                          int length);
+  virtual std::string ShowFileSelectionDialog();
+  virtual pp::URLLoader CreateURLLoader();
+  virtual void ScheduleCallback(int id, int delay_in_ms);
+  virtual void SearchString(const base::char16* string,
+                            const base::char16* term,
+                            bool case_sensitive,
+                            std::vector<SearchStringResult>* results);
+  virtual void DocumentPaintOccurred();
+  virtual void DocumentLoadComplete(int page_count);
+  virtual void DocumentLoadFailed();
+  virtual pp::Instance* GetPluginInstance();
+  virtual void DocumentHasUnsupportedFeature(const std::string& feature);
+  virtual void DocumentLoadProgress(uint32 available, uint32 doc_size);
+  virtual void FormTextFieldFocusChange(bool in_focus);
+  virtual bool IsPrintPreview();
+
+ private:
+  Client* client_;
+};
+
+}  // namespace chrome_pdf
+
+#endif  // PDF_PREVIEW_MODE_CLIENT_H_
diff --git a/xfa_test/pdf/progress_control.cc b/xfa_test/pdf/progress_control.cc
new file mode 100644
index 0000000000..2c2bca4e42
--- /dev/null
+++ b/xfa_test/pdf/progress_control.cc
@@ -0,0 +1,283 @@
+// Copyright (c) 2011 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "pdf/progress_control.h"
+
+#include <algorithm>
+
+#include "base/logging.h"
+#include "pdf/draw_utils.h"
+#include "pdf/resource_consts.h"
+#include "ppapi/cpp/dev/font_dev.h"
+
+namespace chrome_pdf {
+
+const double ProgressControl::kCompleted = 100.0;
+
+// There is a bug outputting text with alpha 0xFF (opaque) to an intermediate
+// image. It outputs alpha channgel of the text pixels to 0xFF (transparent).
+// And it breaks next alpha blending.
+// For now, let's use alpha 0xFE to work around this bug.
+// TODO(gene): investigate this bug.
+const uint32 kProgressTextColor = 0xFEDDE6FC;
+const uint32 kProgressTextSize = 16;
+const uint32 kImageTextSpacing = 8;
+const uint32 kTopPadding = 8;
+const uint32 kBottomPadding = 12;
+const uint32 kLeftPadding = 10;
+const uint32 kRightPadding = 10;
+
+int ScaleInt(int val, float scale) {
+  return static_cast<int>(val * scale);
+}
+
+ProgressControl::ProgressControl()
+    : progress_(0.0),
+      device_scale_(1.0) {
+}
+
+ProgressControl::~ProgressControl() {
+}
+
+bool ProgressControl::CreateProgressControl(
+    uint32 id,
+    bool visible,
+    Control::Owner* delegate,
+    double progress,
+    float device_scale,
+    const std::vector<pp::ImageData>& images,
+    const pp::ImageData& background,
+    const std::string& text) {
+  progress_ = progress;
+  text_ = text;
+  bool res = Control::Create(id, pp::Rect(), visible, delegate);
+  if (res)
+    Reconfigure(background, images, device_scale);
+  return res;
+}
+
+void ProgressControl::Reconfigure(const pp::ImageData& background,
+                                  const std::vector<pp::ImageData>& images,
+                                  float device_scale) {
+  DCHECK(images.size() != 0);
+  images_ = images;
+  background_ = background;
+  device_scale_ = device_scale;
+  pp::Size ctrl_size;
+  CalculateLayout(owner()->GetInstance(), images_, background_, text_,
+      device_scale_, &ctrl_size, &image_rc_, &text_rc_);
+  pp::Rect rc(pp::Point(), ctrl_size);
+  Control::SetRect(rc, false);
+  PrepareBackground();
+}
+
+// static
+void ProgressControl::CalculateLayout(pp::Instance* instance,
+                                      const std::vector<pp::ImageData>& images,
+                                      const pp::ImageData& background,
+                                      const std::string& text,
+                                      float device_scale,
+                                      pp::Size* ctrl_size,
+                                      pp::Rect* image_rc,
+                                      pp::Rect* text_rc) {
+  DCHECK(images.size() != 0);
+  int image_width = 0;
+  int image_height = 0;
+  for (size_t i = 0; i < images.size(); i++) {
+    image_width = std::max(image_width, images[i].size().width());
+    image_height = std::max(image_height, images[i].size().height());
+  }
+
+  pp::FontDescription_Dev description;
+  description.set_family(PP_FONTFAMILY_SANSSERIF);
+  description.set_size(ScaleInt(kProgressTextSize, device_scale));
+  description.set_weight(PP_FONTWEIGHT_BOLD);
+  pp::Font_Dev font(instance, description);
+  int text_length = font.MeasureSimpleText(text);
+
+  pp::FontDescription_Dev desc;
+  PP_FontMetrics_Dev metrics;
+  font.Describe(&desc, &metrics);
+  int text_height = metrics.height;
+
+  *ctrl_size = pp::Size(
+      image_width + text_length +
+      ScaleInt(kImageTextSpacing + kLeftPadding + kRightPadding, device_scale),
+      std::max(image_height, text_height) +
+      ScaleInt(kTopPadding + kBottomPadding, device_scale));
+
+  int offset_x = 0;
+  int offset_y = 0;
+  if (ctrl_size->width() < background.size().width()) {
+    offset_x += (background.size().width() - ctrl_size->width()) / 2;
+    ctrl_size->set_width(background.size().width());
+  }
+  if (ctrl_size->height() < background.size().height()) {
+    offset_y += (background.size().height() - ctrl_size->height()) / 2;
+    ctrl_size->set_height(background.size().height());
+  }
+
+  *image_rc = pp::Rect(ScaleInt(kLeftPadding, device_scale) + offset_x,
+                       ScaleInt(kTopPadding, device_scale) + offset_y,
+                       image_width,
+                       image_height);
+
+  *text_rc = pp::Rect(
+      ctrl_size->width() - text_length -
+      ScaleInt(kRightPadding, device_scale) - offset_x,
+      (ctrl_size->height() - text_height) / 2,
+      text_length,
+      text_height);
+}
+
+size_t ProgressControl::GetImageIngex() const {
+  return static_cast<size_t>((progress_ / 100.0) * images_.size());
+}
+
+void ProgressControl::Paint(pp::ImageData* image_data, const pp::Rect& rc) {
+  if (!visible())
+    return;
+
+  pp::Rect draw_rc = rect().Intersect(rc);
+  if (draw_rc.IsEmpty())
+    return;
+
+  pp::ImageData buffer(owner()->GetInstance(), ctrl_background_.format(),
+                       ctrl_background_.size(), false);
+  CopyImage(ctrl_background_, pp::Rect(ctrl_background_.size()),
+            &buffer, pp::Rect(ctrl_background_.size()), false);
+
+  size_t index = GetImageIngex();
+  if (index >= images_.size())
+    index = images_.size() - 1;
+
+  AlphaBlend(images_[index],
+             pp::Rect(images_[index].size()),
+             &buffer,
+             image_rc_.point(),
+             kOpaqueAlpha);
+
+  pp::Rect image_draw_rc(draw_rc);
+  image_draw_rc.Offset(-rect().x(), -rect().y());
+  AlphaBlend(buffer,
+             image_draw_rc,
+             image_data,
+             draw_rc.point(),
+             transparency());
+}
+
+void ProgressControl::SetProgress(double progress) {
+  size_t old_index = GetImageIngex();
+  progress_ = progress;
+  size_t new_index = GetImageIngex();
+  if (progress_ >= kCompleted) {
+    progress_ = kCompleted;
+    owner()->OnEvent(id(), EVENT_ID_PROGRESS_COMPLETED, NULL);
+  }
+  if (visible() && old_index != new_index)
+    owner()->Invalidate(id(), rect());
+}
+
+void ProgressControl::PrepareBackground() {
+  AdjustBackground();
+
+  pp::FontDescription_Dev description;
+  description.set_family(PP_FONTFAMILY_SANSSERIF);
+  description.set_size(ScaleInt(kProgressTextSize,  device_scale_));
+  description.set_weight(PP_FONTWEIGHT_BOLD);
+  pp::Font_Dev font(owner()->GetInstance(), description);
+
+  pp::FontDescription_Dev desc;
+  PP_FontMetrics_Dev metrics;
+  font.Describe(&desc, &metrics);
+
+  pp::Point text_origin = pp::Point(text_rc_.x(),
+      (text_rc_.y() + text_rc_.bottom() + metrics.x_height) / 2);
+  font.DrawTextAt(&ctrl_background_, pp::TextRun_Dev(text_), text_origin,
+      kProgressTextColor, pp::Rect(ctrl_background_.size()), false);
+}
+
+void ProgressControl::AdjustBackground() {
+  ctrl_background_ = pp::ImageData(owner()->GetInstance(),
+                                   PP_IMAGEDATAFORMAT_BGRA_PREMUL,
+                                   rect().size(),
+                                   false);
+
+  if (rect().size() == background_.size()) {
+    CopyImage(background_, pp::Rect(background_.size()),
+        &ctrl_background_, pp::Rect(ctrl_background_.size()), false);
+    return;
+  }
+
+  // We need to stretch background to new dimentions. To do so, we split
+  // background into 9 different parts. We copy corner rects (1,3,7,9) as is,
+  // stretch rectangles between corners (2,4,6,8) in 1 dimention, and
+  // stretch center rect (5) in 2 dimentions.
+  //    |---|---|---|
+  //    | 1 | 2 | 3 |
+  //    |---|---|---|
+  //    | 4 | 5 | 6 |
+  //    |---|---|---|
+  //    | 7 | 8 | 9 |
+  //    |---|---|---|
+  int slice_x = background_.size().width() / 3;
+  int slice_y = background_.size().height() / 3;
+
+  // Copy rect 1
+  pp::Rect src_rc(0, 0, slice_x, slice_y);
+  pp::Rect dest_rc(0, 0, slice_x, slice_y);
+  CopyImage(background_, src_rc, &ctrl_background_, dest_rc, false);
+
+  // Copy rect 3
+  src_rc.set_x(background_.size().width() - slice_x);
+  dest_rc.set_x(ctrl_background_.size().width() - slice_x);
+  CopyImage(background_, src_rc, &ctrl_background_, dest_rc, false);
+
+  // Copy rect 9
+  src_rc.set_y(background_.size().height() - slice_y);
+  dest_rc.set_y(ctrl_background_.size().height() - slice_y);
+  CopyImage(background_, src_rc, &ctrl_background_, dest_rc, false);
+
+  // Copy rect 7
+  src_rc.set_x(0);
+  dest_rc.set_x(0);
+  CopyImage(background_, src_rc, &ctrl_background_, dest_rc, false);
+
+  // Stretch rect 2
+  src_rc = pp::Rect(
+      slice_x, 0, background_.size().width() - 2 * slice_x, slice_y);
+  dest_rc = pp::Rect(
+      slice_x, 0, ctrl_background_.size().width() - 2 * slice_x, slice_y);
+  CopyImage(background_, src_rc, &ctrl_background_, dest_rc, true);
+
+  // Copy rect 8
+  src_rc.set_y(background_.size().height() - slice_y);
+  dest_rc.set_y(ctrl_background_.size().height() - slice_y);
+  CopyImage(background_, src_rc, &ctrl_background_, dest_rc, true);
+
+  // Stretch rect 4
+  src_rc = pp::Rect(
+      0, slice_y, slice_x, background_.size().height() - 2 * slice_y);
+  dest_rc = pp::Rect(
+      0, slice_y, slice_x, ctrl_background_.size().height() - 2 * slice_y);
+  CopyImage(background_, src_rc, &ctrl_background_, dest_rc, true);
+
+  // Copy rect 6
+  src_rc.set_x(background_.size().width() - slice_x);
+  dest_rc.set_x(ctrl_background_.size().width() - slice_x);
+  CopyImage(background_, src_rc, &ctrl_background_, dest_rc, true);
+
+  // Stretch rect 5
+  src_rc = pp::Rect(slice_x,
+                    slice_y,
+                    background_.size().width() - 2 * slice_x,
+                    background_.size().height() - 2 * slice_y);
+  dest_rc = pp::Rect(slice_x,
+                     slice_y,
+                     ctrl_background_.size().width() - 2 * slice_x,
+                     ctrl_background_.size().height() - 2 * slice_y);
+  CopyImage(background_, src_rc, &ctrl_background_, dest_rc, true);
+}
+
+}  // namespace chrome_pdf
diff --git a/xfa_test/pdf/progress_control.h b/xfa_test/pdf/progress_control.h
new file mode 100644
index 0000000000..96d5da1ce9
--- /dev/null
+++ b/xfa_test/pdf/progress_control.h
@@ -0,0 +1,72 @@
+// Copyright (c) 2012 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef PDF_PROGRESS_CONTROL_H_
+#define PDF_PROGRESS_CONTROL_H_
+
+#include <string>
+#include <vector>
+
+#include "pdf/control.h"
+#include "pdf/fading_control.h"
+#include "ppapi/cpp/image_data.h"
+
+namespace chrome_pdf {
+
+class ProgressControl : public FadingControl {
+ public:
+  static const double kCompleted;
+
+  enum ProgressEventIds {
+    EVENT_ID_PROGRESS_COMPLETED,
+  };
+
+  ProgressControl();
+  virtual ~ProgressControl();
+  virtual bool CreateProgressControl(uint32 id,
+                                     bool visible,
+                                     Control::Owner* delegate,
+                                     double progress,
+                                     float device_scale,
+                                     const std::vector<pp::ImageData>& images,
+                                     const pp::ImageData& background,
+                                     const std::string& text);
+  void Reconfigure(const pp::ImageData& background,
+                   const std::vector<pp::ImageData>& images,
+                   float device_scale);
+
+  static void CalculateLayout(pp::Instance* instance,
+                              const std::vector<pp::ImageData>& images,
+                              const pp::ImageData& background,
+                              const std::string& text,
+                              float device_scale,
+                              pp::Size* ctrl_size,
+                              pp::Rect* image_rc,
+                              pp::Rect* text_rc);
+
+  // Control interface.
+  virtual void Paint(pp::ImageData* image_data, const pp::Rect& rc);
+
+  // ProgressControl interface
+  // Set progress indicator in percents from 0% to 100%.
+  virtual void SetProgress(double progress);
+
+ private:
+  void PrepareBackground();
+  void AdjustBackground();
+  size_t GetImageIngex() const;
+
+  double progress_;
+  float device_scale_;
+  std::vector<pp::ImageData> images_;
+  pp::ImageData background_;
+  pp::ImageData ctrl_background_;
+  std::string text_;
+  pp::Rect image_rc_;
+  pp::Rect text_rc_;
+};
+
+}  // namespace chrome_pdf
+
+#endif  // PDF_PROGRESS_CONTROL_H_
diff --git a/xfa_test/pdf/resource.h b/xfa_test/pdf/resource.h
new file mode 100644
index 0000000000..9fdbea758b
--- /dev/null
+++ b/xfa_test/pdf/resource.h
@@ -0,0 +1,14 @@
+//{{NO_DEPENDENCIES}}
+// Microsoft Visual C++ generated include file.
+// Used by pdf.rc
+
+// Next default values for new objects
+//
+#ifdef APSTUDIO_INVOKED
+#ifndef APSTUDIO_READONLY_SYMBOLS
+#define _APS_NEXT_RESOURCE_VALUE        101
+#define _APS_NEXT_COMMAND_VALUE         40001
+#define _APS_NEXT_CONTROL_VALUE         1001
+#define _APS_NEXT_SYMED_VALUE           101
+#endif
+#endif
diff --git a/xfa_test/pdf/resource_consts.h b/xfa_test/pdf/resource_consts.h
new file mode 100644
index 0000000000..f12efd61be
--- /dev/null
+++ b/xfa_test/pdf/resource_consts.h
@@ -0,0 +1,49 @@
+// Copyright (c) 2010 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef PDF_RESOURCE_RESOURCE_CONSTS_H_
+#define PDF_RESOURCE_RESOURCE_CONSTS_H_
+
+#include "base/basictypes.h"
+
+namespace chrome_pdf {
+
+const int kDragTimerMs = 50;
+const double kMinZoom = 0.1;
+const double kMaxZoom = 10.0;
+const double kZoomStep = 1.2;
+
+const uint32 kFadingTimeoutMs = 50;
+
+const uint32 kToolbarId = 10;
+const uint32 kThumbnailsId = 11;
+const uint32 kProgressBarId = 12;
+const uint32 kPageIndicatorId = 13;
+const uint32 kFitToPageButtonId = 100;
+const uint32 kFitToWidthButtonId = 101;
+const uint32 kZoomOutButtonId = 102;
+const uint32 kZoomInButtonId = 103;
+const uint32 kSaveButtonId = 104;
+const uint32 kPrintButtonId = 105;
+
+const uint32 kAutoScrollId = 200;
+
+// fading_rect.left = button_rect.left - kToolbarFadingOffsetLeft
+const int32 kToolbarFadingOffsetLeft = 40;
+// fading_rect.top = button_rect.top - kToolbarFadingOffsetTop
+const int32 kToolbarFadingOffsetTop = 40;
+// fading_rect.right = button_rect.right + kToolbarFadingOffsetRight
+const int32 kToolbarFadingOffsetRight = 10;
+// fading_rect.bottom = button_rect.bottom + kToolbarFadingOffsetBottom
+const int32 kToolbarFadingOffsetBottom = 8;
+
+const int32 kProgressOffsetLeft = 8;
+const int32 kProgressOffsetBottom = 8;
+
+// Width of the thumbnails control.
+const int32 kThumbnailsWidth = 196;
+
+}  // namespace chrome_pdf
+
+#endif  // PDF_RESOURCE_RESOURCE_CONSTS_H_
diff --git a/xfa_test/pdf/thumbnail_control.cc b/xfa_test/pdf/thumbnail_control.cc
new file mode 100644
index 0000000000..9a779b2912
--- /dev/null
+++ b/xfa_test/pdf/thumbnail_control.cc
@@ -0,0 +1,301 @@
+// Copyright (c) 2012 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "pdf/thumbnail_control.h"
+
+#include <algorithm>
+
+#include "base/logging.h"
+#include "base/strings/string_util.h"
+#include "pdf/draw_utils.h"
+#include "pdf/number_image_generator.h"
+
+namespace chrome_pdf {
+
+const int kLeftBorderSize = 52;
+const int kBorderSize = 12;
+const int kHighlightBorderSize = 2;
+
+const uint32 kLeftColor = 0x003F537B;
+const uint32 kRightColor = 0x990D1626;
+
+const uint32 kTopHighlightColor = 0xFF426DC9;
+const uint32 kBottomHighlightColor = 0xFF6391DE;
+const uint32 kThumbnailBackgroundColor = 0xFF000000;
+
+const uint32 kSlidingTimeoutMs = 50;
+const int32 kSlidingShift = 50;
+
+const double kNonSelectedThumbnailAlpha = 0.91;
+
+ThumbnailControl::ThumbnailControl()
+    : engine_(NULL), sliding_width_(0), sliding_shift_(kSlidingShift),
+      sliding_timeout_(kSlidingTimeoutMs), sliding_timer_id_(0) {
+}
+
+ThumbnailControl::~ThumbnailControl() {
+  ClearCache();
+}
+
+bool ThumbnailControl::CreateThumbnailControl(
+    uint32 id, const pp::Rect& rc,
+    bool visible, Owner* owner, PDFEngine* engine,
+    NumberImageGenerator* number_image_generator) {
+  engine_ = engine;
+  number_image_generator_ = number_image_generator;
+  sliding_width_ = rc.width();
+
+  return Control::Create(id, rc, visible, owner);
+}
+
+void ThumbnailControl::SetPosition(int position, int total, bool invalidate) {
+  visible_rect_ = pp::Rect();
+  visible_pages_.clear();
+
+  if (rect().width() < kLeftBorderSize + kBorderSize) {
+    return;  // control is too narrow to show thumbnails.
+  }
+
+  int num_pages = engine_->GetNumberOfPages();
+
+  int max_doc_width = 0, total_doc_height = 0;
+  std::vector<pp::Rect> page_sizes(num_pages);
+  for (int i = 0; i < num_pages; ++i) {
+    page_sizes[i] = engine_->GetPageRect(i);
+    max_doc_width = std::max(max_doc_width, page_sizes[i].width());
+    total_doc_height += page_sizes[i].height();
+  }
+
+  if (!max_doc_width)
+    return;
+
+  int max_thumbnail_width = rect().width() - kLeftBorderSize - kBorderSize;
+  double thumbnail_ratio =
+      max_thumbnail_width / static_cast<double>(max_doc_width);
+
+  int total_thumbnail_height = 0;
+  for (int i = 0; i < num_pages; ++i) {
+    total_thumbnail_height += kBorderSize;
+    int thumbnail_width =
+        static_cast<int>(page_sizes[i].width() * thumbnail_ratio);
+    int thumbnail_height =
+        static_cast<int>(page_sizes[i].height() * thumbnail_ratio);
+    int x = (max_thumbnail_width - thumbnail_width) / 2;
+    page_sizes[i] =
+        pp::Rect(x, total_thumbnail_height, thumbnail_width, thumbnail_height);
+    total_thumbnail_height += thumbnail_height;
+  }
+  total_thumbnail_height += kBorderSize;
+
+  int visible_y = 0;
+  if (total > 0) {
+    double range = total_thumbnail_height - rect().height();
+    if (range < 0)
+      range = 0;
+    visible_y = static_cast<int>(range * position / total);
+  }
+  visible_rect_ = pp::Rect(0, visible_y, max_thumbnail_width, rect().height());
+
+  for (int i = 0; i < num_pages; ++i) {
+    if (page_sizes[i].Intersects(visible_rect_)) {
+      PageInfo page_info;
+      page_info.index = i;
+      page_info.rect = page_sizes[i];
+      page_info.rect.Offset(kLeftBorderSize, -visible_rect_.y());
+      visible_pages_.push_back(page_info);
+    }
+  }
+
+  if (invalidate)
+    owner()->Invalidate(id(), rect());
+}
+
+void ThumbnailControl::Show(bool visible, bool invalidate) {
+  if (!visible || invalidate)
+    ClearCache();
+  sliding_width_ = rect().width();
+  Control::Show(visible, invalidate);
+}
+
+void ThumbnailControl::SlideIn() {
+  if (visible())
+    return;
+
+  Show(true, false);
+  sliding_width_ = 0;
+  sliding_shift_ = kSlidingShift;
+
+  sliding_timer_id_ = owner()->ScheduleTimer(id(), sliding_timeout_);
+  owner()->Invalidate(id(), rect());
+}
+
+void ThumbnailControl::SlideOut() {
+  if (!visible())
+    return;
+  sliding_shift_ = -kSlidingShift;
+  sliding_timer_id_ = owner()->ScheduleTimer(id(), sliding_timeout_);
+}
+
+void ThumbnailControl::Paint(pp::ImageData* image_data, const pp::Rect& rc) {
+  if (!visible())
+    return;
+
+  pp::Rect control_rc(rect());
+  control_rc.Offset(control_rc.width() - sliding_width_, 0);
+  control_rc.set_width(sliding_width_);
+
+  pp::Rect draw_rc = rc.Intersect(control_rc);
+  if (draw_rc.IsEmpty())
+    return;
+
+  pp::Rect gradient_rc(control_rc.x(), draw_rc.y(),
+                       control_rc.width(), draw_rc.height());
+  GradientFill(owner()->GetInstance(),
+               image_data,
+               draw_rc,
+               gradient_rc,
+               kLeftColor,
+               kRightColor,
+               true,
+               transparency());
+
+  int selected_page = engine_->GetMostVisiblePage();
+  for (size_t i = 0; i < visible_pages_.size(); ++i) {
+    pp::Rect page_rc = visible_pages_[i].rect;
+    page_rc.Offset(control_rc.point());
+
+    if (visible_pages_[i].index == selected_page) {
+      pp::Rect highlight_rc = page_rc;
+      highlight_rc.Inset(-kHighlightBorderSize, -kHighlightBorderSize);
+      GradientFill(owner()->GetInstance(),
+                   image_data,
+                   draw_rc,
+                   highlight_rc,
+                   kTopHighlightColor,
+                   kBottomHighlightColor,
+                   false,
+                   transparency());
+    }
+
+    pp::Rect draw_page_rc = page_rc.Intersect(draw_rc);
+    if (draw_page_rc.IsEmpty())
+      continue;
+
+    // First search page image in the cache.
+    pp::ImageData* thumbnail = NULL;
+    std::map<int, pp::ImageData*>::iterator it =
+        image_cache_.find(visible_pages_[i].index);
+    if (it != image_cache_.end()) {
+      if (it->second->size() == page_rc.size())
+        thumbnail = image_cache_[visible_pages_[i].index];
+      else
+        image_cache_.erase(it);
+    }
+
+    // If page is not found in the cache, create new one.
+    if (thumbnail == NULL) {
+      thumbnail = new pp::ImageData(owner()->GetInstance(),
+                                    PP_IMAGEDATAFORMAT_BGRA_PREMUL,
+                                    page_rc.size(),
+                                    false);
+      engine_->PaintThumbnail(thumbnail, visible_pages_[i].index);
+
+      pp::ImageData page_number;
+      number_image_generator_->GenerateImage(
+          visible_pages_[i].index + 1, &page_number);
+      pp::Point origin(
+          (thumbnail->size().width() - page_number.size().width()) / 2,
+          (thumbnail->size().height() - page_number.size().height()) / 2);
+
+      if (origin.x() > 0 && origin.y() > 0) {
+        AlphaBlend(page_number, pp::Rect(pp::Point(), page_number.size()),
+                   thumbnail, origin, kOpaqueAlpha);
+      }
+
+      image_cache_[visible_pages_[i].index] = thumbnail;
+    }
+
+    uint8 alpha = transparency();
+    if (visible_pages_[i].index != selected_page)
+      alpha = static_cast<uint8>(alpha * kNonSelectedThumbnailAlpha);
+    FillRect(image_data, draw_page_rc, kThumbnailBackgroundColor);
+    draw_page_rc.Offset(-page_rc.x(), -page_rc.y());
+    AlphaBlend(*thumbnail, draw_page_rc, image_data,
+        draw_page_rc.point() + page_rc.point(), alpha);
+  }
+}
+
+bool ThumbnailControl::HandleEvent(const pp::InputEvent& event) {
+  if (!visible())
+    return false;
+
+  pp::MouseInputEvent mouse_event(event);
+  if (mouse_event.is_null())
+    return false;
+  pp::Point pt = mouse_event.GetPosition();
+  if (!rect().Contains(pt))
+    return false;
+
+  int over_page = -1;
+  for (size_t i = 0; i < visible_pages_.size(); ++i) {
+    pp::Rect page_rc = visible_pages_[i].rect;
+    page_rc.Offset(rect().point());
+    if (page_rc.Contains(pt)) {
+      over_page = i;
+      break;
+    }
+  }
+
+  bool handled = false;
+  switch (event.GetType()) {
+    case PP_INPUTEVENT_TYPE_MOUSEMOVE:
+      owner()->SetCursor(id(),
+          over_page == -1 ? PP_CURSORTYPE_POINTER : PP_CURSORTYPE_HAND);
+      break;
+    case PP_INPUTEVENT_TYPE_MOUSEDOWN:
+      if (over_page != -1) {
+        owner()->Invalidate(id(), rect());
+        owner()->OnEvent(id(), EVENT_ID_THUMBNAIL_SELECTED,
+                         &visible_pages_[over_page].index);
+      }
+      handled = true;
+      break;
+    default:
+      break;
+  }
+
+  return handled;
+}
+
+void ThumbnailControl::OnTimerFired(uint32 timer_id) {
+  if (timer_id == sliding_timer_id_) {
+    sliding_width_ += sliding_shift_;
+    if (sliding_width_ <= 0) {
+      // We completely slided out. Make control invisible now.
+      Show(false, false);
+    } else if (sliding_width_ >= rect().width()) {
+      // We completely slided in. Make sliding width to full control width.
+      sliding_width_ = rect().width();
+    } else {
+      // We have not completed sliding yet. Keep sliding.
+      sliding_timer_id_ = owner()->ScheduleTimer(id(), sliding_timeout_);
+    }
+    owner()->Invalidate(id(), rect());
+  }
+}
+
+void ThumbnailControl::ResetEngine(PDFEngine* engine) {
+  engine_ = engine;
+  ClearCache();
+}
+
+void ThumbnailControl::ClearCache() {
+  std::map<int, pp::ImageData*>::iterator it;
+  for (it = image_cache_.begin(); it != image_cache_.end(); ++it) {
+    delete it->second;
+  }
+  image_cache_.clear();
+}
+
+}  // namespace chrome_pdf
diff --git a/xfa_test/pdf/thumbnail_control.h b/xfa_test/pdf/thumbnail_control.h
new file mode 100644
index 0000000000..d10a32896d
--- /dev/null
+++ b/xfa_test/pdf/thumbnail_control.h
@@ -0,0 +1,67 @@
+// Copyright (c) 2010 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef PDF_THUMBNAIL_CONTROL_H_
+#define PDF_THUMBNAIL_CONTROL_H_
+
+#include <map>
+#include <vector>
+
+#include "pdf/control.h"
+#include "pdf/pdf_engine.h"
+#include "ppapi/cpp/input_event.h"
+
+namespace chrome_pdf {
+
+class NumberImageGenerator;
+
+class ThumbnailControl : public Control {
+ public:
+  enum ThumbnailEventIds {
+    EVENT_ID_THUMBNAIL_SELECTED = 100,
+  };
+
+  explicit ThumbnailControl();
+  virtual ~ThumbnailControl();
+
+  // Sets current position of the thumnail control.
+  void SetPosition(int position, int total, bool invalidate);
+  void SlideIn();
+  void SlideOut();
+
+  virtual bool CreateThumbnailControl(
+      uint32 id, const pp::Rect& rc,
+      bool visible, Owner* owner, PDFEngine* engine,
+      NumberImageGenerator* number_image_generator);
+
+  // Control interface.
+  virtual void Show(bool visible, bool invalidate);
+  virtual void Paint(pp::ImageData* image_data, const pp::Rect& rc);
+  virtual bool HandleEvent(const pp::InputEvent& event);
+  virtual void OnTimerFired(uint32 timer_id);
+
+  virtual void ResetEngine(PDFEngine* engine);
+
+ private:
+  void ClearCache();
+
+  struct PageInfo {
+    int index;
+    pp::Rect rect;
+  };
+
+  PDFEngine* engine_;
+  pp::Rect visible_rect_;
+  std::vector<PageInfo> visible_pages_;
+  std::map<int, pp::ImageData*> image_cache_;
+  int sliding_width_;
+  int sliding_shift_;
+  int sliding_timeout_;
+  uint32 sliding_timer_id_;
+  NumberImageGenerator* number_image_generator_;
+};
+
+}  // namespace chrome_pdf
+
+#endif  // PDF_THUMBNAIL_CONTROL_H_