Make code compile with clang_use_chrome_plugin (part II)

core/fxge/win32/win32_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_FXGE_WIN32_WIN32_INT_H_
 #define CORE_FXGE_WIN32_WIN32_INT_H_
 
 #include "core/fxge/include/fx_ge.h"
@@ skipping 119 matching lines @@
   FX_BOOL FillRectWithBlend(const FX_RECT* pRect,
                             uint32_t fill_color,
                             int blend_type) override;
   FX_BOOL DrawCosmeticLine(FX_FLOAT x1,
                            FX_FLOAT y1,
                            FX_FLOAT x2,
                            FX_FLOAT y2,
                            uint32_t color,
                            int blend_type) override;
   FX_BOOL GetClipBox(FX_RECT* pRect) override;
-  void* GetPlatformSurface() const override { return (void*)m_hDC; }
+  void* GetPlatformSurface() const override;
 
   void DrawLine(FX_FLOAT x1,
                 FX_FLOAT y1,
                 FX_FLOAT x2,
                 FX_FLOAT y2,
                 const CFX_Matrix* pMatrix);
 
   FX_BOOL GDI_SetDIBits(CFX_DIBitmap* pBitmap,
                         const FX_RECT* pSrcRect,
                         int left,
@@ skipping 45 matching lines @@
                         int dest_height,
                         const FX_RECT* pClipRect,
                         uint32_t flags,
                         int blend_type) override;
   FX_BOOL StartDIBits(const CFX_DIBSource* pBitmap,
                       int bitmap_alpha,
                       uint32_t color,
                       const CFX_Matrix* pMatrix,
                       uint32_t render_flags,
                       void*& handle,
-                      int blend_type) override {
-    return FALSE;
-  }
+                      int blend_type) override;
   FX_BOOL UseFoxitStretchEngine(const CFX_DIBSource* pSource,
                                 uint32_t color,
                                 int dest_left,
                                 int dest_top,
                                 int dest_width,
                                 int dest_height,
                                 const FX_RECT* pClipRect,
                                 int render_flags);
 };
 
@@ skipping 25 matching lines @@
                       const CFX_Matrix* pMatrix,
                       uint32_t render_flags,
                       void*& handle,
                       int blend_type) override;
 
   const int m_HorzSize;
   const int m_VertSize;
 };
 
 #endif  // CORE_FXGE_WIN32_WIN32_INT_H_