Make code compile with clang_use_chrome_plugin (part II)

This change contains files in core directory which were not covered
in part I. This is part of the efforts to make PDFium code compilable
by Clang chromium style plugins.

The changes are mainly the following:
-- move inline constructor/destructor of complex class/struct out-of-line;
-- add constructor/destructor of complex class/struct if not
 explicitly defined;
-- add explicit out-of-line copy constructor when needed;
-- move inline virtual functions out-of-line;
-- Properly mark virtual functions with 'override';
-- some minor cleanups;

BUG=pdfium:469

Review-Url: https://codereview.chromium.org/2060913003

1 files changed, 14 insertions, 0 deletions

diff --git a/core/fxge/win32/fx_win32_device.cpp b/core/fxge/win32/fx_win32_device.cpp
index c2084f2877..2df5c1c4ce 100644
--- a/core/fxge/win32/fx_win32_device.cpp
+++ b/core/fxge/win32/fx_win32_device.cpp
@@ -939,6 +939,10 @@ FX_BOOL CGdiDeviceDriver::GetClipBox(FX_RECT* pRect) {
   return ::GetClipBox(m_hDC, (RECT*)pRect);
 }
 
+void* CGdiDeviceDriver::GetPlatformSurface() const {
+  return (void*)m_hDC;
+}
+
 void CGdiDeviceDriver::DrawLine(FX_FLOAT x1,
                                 FX_FLOAT y1,
                                 FX_FLOAT x2,
@@ -1363,6 +1367,16 @@ FX_BOOL CGdiDisplayDriver::StretchDIBits(const CFX_DIBSource* pSource,
                            dest_height, flags, nullptr);
 }
 
+FX_BOOL CGdiDisplayDriver::StartDIBits(const CFX_DIBSource* pBitmap,
+                                       int bitmap_alpha,
+                                       uint32_t color,
+                                       const CFX_Matrix* pMatrix,
+                                       uint32_t render_flags,
+                                       void*& handle,
+                                       int blend_type) {
+  return FALSE;
+}
+
 CFX_WindowsDevice::CFX_WindowsDevice(HDC hDC) {
   SetDeviceDriver(CreateDriver(hDC));
 }