Introduce PlatformBitmap, which is a minimal helper class that wraps an SkBitmap

content/browser/renderer_host/test_render_view_host.h

 // Copyright (c) 2012 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 CONTENT_BROWSER_RENDERER_HOST_TEST_RENDER_VIEW_HOST_H_
 #define CONTENT_BROWSER_RENDERER_HOST_TEST_RENDER_VIEW_HOST_H_
 
 #include <string>
 #include <vector>
 
@@ skipping 92 matching lines @@
   virtual void RenderViewGone(base::TerminationStatus status,
                               int error_code) OVERRIDE;
   virtual void WillDestroyRenderWidget(RenderWidgetHost* rwh) { }
   virtual void Destroy() OVERRIDE {}
   virtual void SetTooltipText(const string16& tooltip_text) OVERRIDE {}
   virtual BackingStore* AllocBackingStore(const gfx::Size& size) OVERRIDE;
   virtual void CopyFromCompositingSurface(
       const gfx::Rect& src_subrect,
       const gfx::Size& dst_size,
       const base::Callback<void(bool)>& callback,
-      skia::PlatformCanvas* output) OVERRIDE;
+      skia::PlatformBitmap* output) OVERRIDE;
   virtual void OnAcceleratedCompositingStateChange() OVERRIDE;
   virtual void AcceleratedSurfaceBuffersSwapped(
       const GpuHostMsg_AcceleratedSurfaceBuffersSwapped_Params& params,
       int gpu_host_id) OVERRIDE;
   virtual void AcceleratedSurfacePostSubBuffer(
       const GpuHostMsg_AcceleratedSurfacePostSubBuffer_Params& params,
       int gpu_host_id) OVERRIDE;
   virtual void AcceleratedSurfaceSuspend() OVERRIDE;
   virtual bool HasAcceleratedSurface(const gfx::Size& desired_size) OVERRIDE;
 #if defined(OS_MACOSX)
@@ skipping 223 matching lines @@
   TestRenderViewHost* active_test_rvh();
   TestWebContents* contents();
 
  private:
   DISALLOW_COPY_AND_ASSIGN(RenderViewHostImplTestHarness);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_RENDERER_HOST_TEST_RENDER_VIEW_HOST_H_