Some cleanup of backing_store_win.cc...

chrome/browser/renderer_host/backing_store.h

 // Copyright (c) 2006-2008 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CHROME_BROWSER_RENDERER_HOST_BACKING_STORE_H_
 #define CHROME_BROWSER_RENDERER_HOST_BACKING_STORE_H_
 
 #include "base/basictypes.h"
 #include "base/gfx/rect.h"
 #include "base/gfx/size.h"
@@ skipping 63 matching lines @@
                   TransportDIB* bitmap, const gfx::Rect& bitmap_rect,
                   int dx, int dy,
                   const gfx::Rect& clip_rect,
                   const gfx::Size& view_size);
 
  private:
   // The size of the backing store.
   gfx::Size size_;
 
 #if defined(OS_WIN)
-  // Creates a dib conforming to the height/width/section parameters passed
-  // in. The use_os_color_depth parameter controls whether we use the color
-  // depth to create an appropriate dib or not.
-  HANDLE CreateDIB(HDC dc,
-                   int width, int height,
-                   bool use_os_color_depth,
-                   HANDLE section);
 
   // The backing store dc.
   HDC hdc_;
-
   // Handle to the backing store dib.
   HANDLE backing_store_dib_;
-
   // Handle to the original bitmap in the dc.
   HANDLE original_bitmap_;
+  // Number of bits per pixel of the screen.
+  int color_depth_;
 #elif defined(OS_MACOSX)
   skia::PlatformCanvas canvas_;
 #elif defined(OS_LINUX)
   // Paints the bitmap from the renderer onto the backing store without
   // using Xrender to composite the pixmaps.
   void PaintRectWithoutXrender(TransportDIB* bitmap,
                                const gfx::Rect& bitmap_rect);
 
   // This is the connection to the X server where this backing store will be
   // displayed.
@@ skipping 65 matching lines @@
   static void RemoveBackingStore(RenderWidgetHost* host);
 
  private:
   // Not intended for instantiation.
   BackingStoreManager() {}
 
   DISALLOW_COPY_AND_ASSIGN(BackingStoreManager);
 };
 
 #endif  // CHROME_BROWSER_RENDERER_HOST_BACKING_STORE_H_