sync compositor: Send ipc reply in swap

content/browser/android/in_process/synchronous_compositor_impl.h

 // Copyright 2013 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_ANDROID_IN_PROCESS_SYNCHRONOUS_COMPOSITOR_IMPL_H_
 #define CONTENT_BROWSER_ANDROID_IN_PROCESS_SYNCHRONOUS_COMPOSITOR_IMPL_H_
 
 #include <stddef.h>
 
 #include <vector>
@@ skipping 42 matching lines @@
       SynchronousCompositorOutputSurface* output_surface,
       SynchronousCompositorExternalBeginFrameSource* begin_frame_source,
       ui::SynchronousInputHandlerProxy* synchronous_input_handler_proxy);
   void DidDestroyRendererObjects();
 
   // SynchronousCompositorExternalBeginFrameSourceClient overrides.
   void OnNeedsBeginFramesChange(bool needs_begin_frames) override;
 
   // SynchronousCompositorOutputSurfaceClient overrides.
   void Invalidate() override;
+  void SwapBuffers(cc::CompositorFrame* frame) override;
 
   // SynchronousCompositor overrides.
   scoped_ptr<cc::CompositorFrame> DemandDrawHw(
       const gfx::Size& surface_size,
       const gfx::Transform& transform,
       const gfx::Rect& viewport,
       const gfx::Rect& clip,
       const gfx::Rect& viewport_rect_for_tile_priority,
       const gfx::Transform& transform_for_tile_priority) override;
   bool DemandDrawSw(SkCanvas* canvas) override;
@@ skipping 37 matching lines @@
   RenderWidgetHostViewAndroid* const rwhva_;
   const int routing_id_;
   SynchronousCompositorClient* const compositor_client_;
   SynchronousCompositorOutputSurface* output_surface_;
   SynchronousCompositorExternalBeginFrameSource* begin_frame_source_;
   ui::SynchronousInputHandlerProxy* synchronous_input_handler_proxy_;
   bool registered_with_client_;
   bool is_active_;
   bool renderer_needs_begin_frames_;
   bool need_animate_input_;
+  scoped_ptr<cc::CompositorFrame> frame_holder_;
 
   base::WeakPtrFactory<SynchronousCompositorImpl> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(SynchronousCompositorImpl);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_ANDROID_IN_PROCESS_SYNCHRONOUS_COMPOSITOR_IMPL_H_