Make code compile with clang_use_chrome_plugin (part IV)

This change mainly contains files in fpdfsdk/ directory.
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 plus removing an unused file and splitting
cxfa_eventparam out from fxfa.h

BUG=pdfium:469

Review-Url: https://codereview.chromium.org/2062313002

1 files changed, 16 insertions, 0 deletions

diff --git a/fpdfsdk/fpdfview.cpp b/fpdfsdk/fpdfview.cpp
index 9847f15c60..43ca3183f9 100644
--- a/fpdfsdk/fpdfview.cpp
+++ b/fpdfsdk/fpdfview.cpp
@@ -104,6 +104,10 @@ FX_BOOL CFPDF_FileStream::IsEOF() {
   return m_nCurPos >= GetSize();
 }
 
+FX_FILESIZE CFPDF_FileStream::GetPosition() {
+  return m_nCurPos;
+}
+
 FX_BOOL CFPDF_FileStream::ReadBlock(void* buffer,
                                     FX_FILESIZE offset,
                                     size_t size) {
@@ -167,6 +171,10 @@ CPDF_CustomAccess::CPDF_CustomAccess(FPDF_FILEACCESS* pFileAccess) {
 }
 
 #ifdef PDF_ENABLE_XFA
+CFX_ByteString CPDF_CustomAccess::GetFullPath() {
+  return "";
+}
+
 FX_BOOL CPDF_CustomAccess::GetByte(uint32_t pos, uint8_t& ch) {
   if (pos >= m_FileAccess.m_FileLen)
     return FALSE;
@@ -194,6 +202,14 @@ FX_BOOL CPDF_CustomAccess::GetBlock(uint32_t pos,
 }
 #endif  // PDF_ENABLE_XFA
 
+FX_FILESIZE CPDF_CustomAccess::GetSize() {
+  return m_FileAccess.m_FileLen;
+}
+
+void CPDF_CustomAccess::Release() {
+  delete this;
+}
+
 FX_BOOL CPDF_CustomAccess::ReadBlock(void* buffer,
                                      FX_FILESIZE offset,
                                      size_t size) {