Make code compile with clang_use_chrome_plugin (part I)

This change contains files in core/fpdfapi 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;

BUG=pdfium:469

Review-Url: https://codereview.chromium.org/2060973002

1 files changed, 2 insertions, 2 deletions

diff --git a/core/fpdfapi/fpdf_parser/cpdf_data_avail.h b/core/fpdfapi/fpdf_parser/cpdf_data_avail.h
index f7da8f0d22..553489a267 100644
--- a/core/fpdfapi/fpdf_parser/cpdf_data_avail.h
+++ b/core/fpdfapi/fpdf_parser/cpdf_data_avail.h
@@ -56,13 +56,13 @@ class CPDF_DataAvail final : public IPDF_DataAvail {
                  FX_BOOL bSupportHintTable);
   ~CPDF_DataAvail() override;
 
-  // IPDF_DataAvail:
+  // IPDF_DataAvail
   DocAvailStatus IsDocAvail(DownloadHints* pHints) override;
   void SetDocument(CPDF_Document* pDoc) override;
   DocAvailStatus IsPageAvail(int iPage, DownloadHints* pHints) override;
   DocFormStatus IsFormAvail(DownloadHints* pHints) override;
   DocLinearizationStatus IsLinearizedPDF() override;
-  FX_BOOL IsLinearized() override { return m_bLinearized; }
+  FX_BOOL IsLinearized() override;
   void GetLinearizedMainXRefInfo(FX_FILESIZE* pPos, uint32_t* pSize) override;
 
   int GetPageCount() const;