Make code compile with clang_use_chrome_plugin (part I)

core/fpdfapi/fpdf_render/render_int.h

 // Copyright 2014 PDFium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
 
 #ifndef CORE_FPDFAPI_FPDF_RENDER_RENDER_INT_H_
 #define CORE_FPDFAPI_FPDF_RENDER_RENDER_INT_H_
 
 #include <map>
@@ skipping 32 matching lines @@
 class CPDF_Type3Cache;
 class CPDF_Type3Char;
 class CPDF_Type3Font;
 
 #define TYPE3_MAX_BLUES 16
 
 FX_BOOL IsAvailableMatrix(const CFX_Matrix& matrix);
 
 class CPDF_Type3Glyphs {
  public:
-  CPDF_Type3Glyphs() : m_TopBlueCount(0), m_BottomBlueCount(0) {}
+  CPDF_Type3Glyphs();
   ~CPDF_Type3Glyphs();
+
   void AdjustBlue(FX_FLOAT top,
                   FX_FLOAT bottom,
                   int& top_line,
                   int& bottom_line);
 
   std::map<uint32_t, CFX_GlyphBitmap*> m_GlyphMap;
   int m_TopBlue[TYPE3_MAX_BLUES];
   int m_BottomBlue[TYPE3_MAX_BLUES];
   int m_TopBlueCount;
   int m_BottomBlueCount;
 };
+
 class CPDF_Type3Cache {
  public:
-  explicit CPDF_Type3Cache(CPDF_Type3Font* pFont) : m_pFont(pFont) {}
+  explicit CPDF_Type3Cache(CPDF_Type3Font* pFont);
   ~CPDF_Type3Cache();
 
   CFX_GlyphBitmap* LoadGlyph(uint32_t charcode,
                              const CFX_Matrix* pMatrix,
                              FX_FLOAT retinaScaleX = 1.0f,
                              FX_FLOAT retinaScaleY = 1.0f);
 
  protected:
   CFX_GlyphBitmap* RenderGlyph(CPDF_Type3Glyphs* pSize,
                                uint32_t charcode,
@@ skipping 519 matching lines @@
   void* m_pJbig2Context;
   CPDF_DIBSource* m_pMask;
   std::unique_ptr<CPDF_StreamAcc> m_pGlobalStream;
   CPDF_Stream* m_pMaskStream;
   int m_Status;
 };
 
 #define FPDF_HUGE_IMAGE_SIZE 60000000
 class CPDF_DIBTransferFunc : public CFX_FilteredDIB {
  public:
-  CPDF_DIBTransferFunc(const CPDF_TransferFunc* pTransferFunc);
+  explicit CPDF_DIBTransferFunc(const CPDF_TransferFunc* pTransferFunc);
   ~CPDF_DIBTransferFunc() override;
 
   // CFX_FilteredDIB
   FXDIB_Format GetDestFormat() override;
-  FX_ARGB* GetDestPalette() override { return nullptr; }
+  FX_ARGB* GetDestPalette() override;
   void TranslateScanline(uint8_t* dest_buf,
                          const uint8_t* src_buf) const override;
   void TranslateDownSamples(uint8_t* dest_buf,
                             const uint8_t* src_buf,
                             int pixels,
                             int Bpp) const override;
 
   const uint8_t* m_RampR;
   const uint8_t* m_RampG;
   const uint8_t* m_RampB;
 };
 
 #endif  // CORE_FPDFAPI_FPDF_RENDER_RENDER_INT_H_