Aura: Browser-side changes for Composite-To-Mailbox

content/browser/renderer_host/render_widget_host_impl.h

Index: content/browser/renderer_host/render_widget_host_impl.h
diff --git a/content/browser/renderer_host/render_widget_host_impl.h b/content/browser/renderer_host/render_widget_host_impl.h
index c088309b4d4fe916e858b61a716b4e176a852328..4ab00592b90b294893bb3efde5fe50fdad5c9f40 100644
--- a/content/browser/renderer_host/render_widget_host_impl.h
+++ b/content/browser/renderer_host/render_widget_host_impl.h
@@ -41,6 +41,7 @@ class TimeTicks;
 
 namespace cc {
 class CompositorFrame;
+class CompositorFrameAck;
 }
 
 namespace ui {
@@ -388,6 +389,10 @@ class CONTENT_EXPORT RenderWidgetHostImpl : virtual public RenderWidgetHost,
       int gpu_host_id,
       const AcceleratedSurfaceMsg_BufferPresented_Params& params);
 
+  // Called by the view in response to OnSwapCompositorFrame.
+  static void SendSwapCompositorFrameAck(
+      int32 route_id, int renderer_host_id, const cc::CompositorFrameAck& ack);
+
   // Called by the view in response to AcceleratedSurfaceBuffersSwapped for
   // platforms that support deferred GPU process descheduling. This does
   // nothing if the compositor thread is enabled.