On Windows, create a new TransportDIB::Handle struct which includes the file

chrome/browser/renderer_host/backing_store_mac.h

 // Copyright (c) 2010 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_MAC_H_
 #define CHROME_BROWSER_RENDERER_HOST_BACKING_STORE_MAC_H_
 #pragma once
 
 #include "base/basictypes.h"
 #include "base/mac/scoped_cftyperef.h"
 #include "chrome/browser/renderer_host/backing_store.h"
 
 class BackingStoreMac : public BackingStore {
  public:
   BackingStoreMac(RenderWidgetHost* widget, const gfx::Size& size);
   virtual ~BackingStoreMac();
 
   // A CGLayer that stores the contents of the backing store, cached in GPU
   // memory if possible.
   CGLayerRef cg_layer() { return cg_layer_; }
 
   // A CGBitmapContext that stores the contents of the backing store if the
   // corresponding Cocoa view has not been inserted into an NSWindow yet.
   CGContextRef cg_bitmap() { return cg_bitmap_; }
 
   // BackingStore implementation.
   virtual void PaintToBackingStore(
       RenderProcessHost* process,
-      TransportDIB::Id bitmap,
+      TransportDIB::Id dib_id,
+      TransportDIB::Handle dib_handle,
       const gfx::Rect& bitmap_rect,
       const std::vector<gfx::Rect>& copy_rects,
       bool* painted_synchronously);
   virtual bool CopyFromBackingStore(const gfx::Rect& rect,
                                     skia::PlatformCanvas* output);
   virtual void ScrollBackingStore(int dx, int dy,
                                   const gfx::Rect& clip_rect,
                                   const gfx::Size& view_size);
 
  private:
   // Creates a CGLayer associated with its owner view's window's graphics
   // context, sized properly for the backing store.  Returns NULL if the owner
   // is not in a window with a CGContext.  cg_layer_ is assigned this method's
   // result.
   CGLayerRef CreateCGLayer();
 
   // Creates a CGBitmapContext sized properly for the backing store.  The
   // owner view need not be in a window.  cg_bitmap_ is assigned this method's
   // result.
   CGContextRef CreateCGBitmapContext();
 
   base::mac::ScopedCFTypeRef<CGContextRef> cg_bitmap_;
   base::mac::ScopedCFTypeRef<CGLayerRef> cg_layer_;
 
   DISALLOW_COPY_AND_ASSIGN(BackingStoreMac);
 };
 
 #endif  // CHROME_BROWSER_RENDERER_HOST_BACKING_STORE_MAC_H_