Send vsync notification from browser to renderer

content/renderer/gpu/compositor_output_surface.cc

Index: content/renderer/gpu/compositor_output_surface.cc
diff --git a/content/renderer/gpu/compositor_output_surface.cc b/content/renderer/gpu/compositor_output_surface.cc
index 8c981435535a4f699d5e730df65c7b56bef4b67d..aefed7d4270cc07fdc9d472abc28662e3a08e89e 100644
--- a/content/renderer/gpu/compositor_output_surface.cc
+++ b/content/renderer/gpu/compositor_output_surface.cc
@@ -42,6 +42,9 @@ IPC::ForwardingMessageFilter* CompositorOutputSurface::CreateFilter(
 {
   uint32 messages_to_filter[] = {
     ViewMsg_UpdateVSyncParameters::ID,
+#if defined(OS_ANDROID)
+    ViewMsg_DidVSync::ID,
+#endif
     ViewMsg_SwapCompositorFrameAck::ID
   };
 
@@ -130,6 +133,9 @@ void CompositorOutputSurface::OnMessageReceived(const IPC::Message& message) {
     return;
   IPC_BEGIN_MESSAGE_MAP(CompositorOutputSurface, message)
     IPC_MESSAGE_HANDLER(ViewMsg_UpdateVSyncParameters, OnUpdateVSyncParameters);
+#if defined(OS_ANDROID)

[jam, 2013/04/16 22:55:50]

nit: convention is to put ifdef section at end of messages that are dispatched
on all platforms (slightly more readable)

+    IPC_MESSAGE_HANDLER(ViewMsg_DidVSync, OnDidVSync);
+#endif
     IPC_MESSAGE_HANDLER(ViewMsg_SwapCompositorFrameAck, OnSwapAck);
   IPC_END_MESSAGE_MAP()
 }
@@ -137,10 +143,21 @@ void CompositorOutputSurface::OnMessageReceived(const IPC::Message& message) {
 void CompositorOutputSurface::OnUpdateVSyncParameters(
     base::TimeTicks timebase, base::TimeDelta interval) {
   DCHECK(CalledOnValidThread());
-  DCHECK(client_);
   client_->OnVSyncParametersChanged(timebase, interval);
 }
 
+#if defined(OS_ANDROID)
+void CompositorOutputSurface::EnableVSyncNotification(bool enable) {
+  DCHECK(CalledOnValidThread());
+  Send(new ViewHostMsg_SetVSyncNotificationEnabled(routing_id_, enable));
+}
+
+void CompositorOutputSurface::OnDidVSync(base::TimeTicks frame_time) {
+  DCHECK(CalledOnValidThread());
+  client_->DidVSync(frame_time);
+}
+#endif  // defined(OS_ANDROID)
+
 void CompositorOutputSurface::OnSwapAck(const cc::CompositorFrameAck& ack) {
   client_->OnSendFrameToParentCompositorAck(ack);
 }