Support error handling for Surface readbacks

content/browser/frame_host/render_widget_host_view_child_frame.h

 // Copyright 2014 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_FRAME_HOST_RENDER_WIDGET_HOST_VIEW_CHILD_FRAME_H_
 #define CONTENT_BROWSER_FRAME_HOST_RENDER_WIDGET_HOST_VIEW_CHILD_FRAME_H_
 
 #include "base/memory/scoped_ptr.h"
 #include "content/browser/renderer_host/render_widget_host_view_base.h"
 #include "content/common/content_export.h"
+#include "content/common/readback_types.h"
 #include "ui/gfx/native_widget_types.h"
 #include "ui/gfx/rect.h"
 
 struct ViewHostMsg_TextInputState_Params;
 
 namespace content {
 class CrossProcessFrameConnector;
 class RenderWidgetHost;
 class RenderWidgetHostImpl;
 
@@ skipping 60 matching lines @@
   virtual void Destroy() OVERRIDE;
   virtual void SetTooltipText(const base::string16& tooltip_text) OVERRIDE;
   virtual void SelectionChanged(const base::string16& text,
                                 size_t offset,
                                 const gfx::Range& range) OVERRIDE;
   virtual void SelectionBoundsChanged(
       const ViewHostMsg_SelectionBounds_Params& params) OVERRIDE;
   virtual void CopyFromCompositingSurface(
       const gfx::Rect& src_subrect,
       const gfx::Size& dst_size,
-      const base::Callback<void(bool, const SkBitmap&)>& callback,
+      CopyFromCompositingSurfaceCallback& callback,
       const SkColorType color_type) OVERRIDE;
   virtual void CopyFromCompositingSurfaceToVideoFrame(
       const gfx::Rect& src_subrect,
       const scoped_refptr<media::VideoFrame>& target,
       const base::Callback<void(bool)>& callback) OVERRIDE;
   virtual bool CanCopyToVideoFrame() const OVERRIDE;
   virtual void AcceleratedSurfaceInitialized(int host_id,
                                              int route_id) OVERRIDE;
   virtual void AcceleratedSurfaceBuffersSwapped(
       const GpuHostMsg_AcceleratedSurfaceBuffersSwapped_Params& params,
@@ skipping 68 matching lines @@
   // sent through it are routed to the embedding renderer process.
   CrossProcessFrameConnector* frame_connector_;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(RenderWidgetHostViewChildFrame);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_FRAME_HOST_RENDER_WIDGET_HOST_VIEW_CHILD_FRAME_H_