[Android] Implement asynchronous zero-copy bitmap capture API.

content/browser/frame_host/render_widget_host_view_guest.h

Index: content/browser/frame_host/render_widget_host_view_guest.h
diff --git a/content/browser/frame_host/render_widget_host_view_guest.h b/content/browser/frame_host/render_widget_host_view_guest.h
index a1ec2671546e0ce2625ef030241c8da1fe6bd775..12d5a37e8392f13dd38d7892ad8526651dbe52c0 100644
--- a/content/browser/frame_host/render_widget_host_view_guest.h
+++ b/content/browser/frame_host/render_widget_host_view_guest.h
@@ -100,7 +100,8 @@ class CONTENT_EXPORT RenderWidgetHostViewGuest
       const gfx::Rect& src_subrect,
       const gfx::Size& dst_size,
       const base::Callback<void(bool, const SkBitmap&)>& callback,
-      const SkBitmap::Config config) OVERRIDE;
+      const SkBitmap::Config config,
+      scoped_ptr<SkBitmap> bitmap) OVERRIDE;
   virtual void AcceleratedSurfaceBuffersSwapped(
       const GpuHostMsg_AcceleratedSurfaceBuffersSwapped_Params& params,
       int gpu_host_id) OVERRIDE;