cc: Emulate BeginFrame in OutputSurfaces that don't support it natively

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 55af86511874200491b0fe4375394b73aa1c2948..74a6dc25e6db9e88c4894659e4b62b6e39fadc65 100644
--- a/content/renderer/gpu/compositor_output_surface.cc
+++ b/content/renderer/gpu/compositor_output_surface.cc
@@ -69,7 +69,7 @@ CompositorOutputSurface::CompositorOutputSurface(
 
 CompositorOutputSurface::~CompositorOutputSurface() {
   DCHECK(CalledOnValidThread());
-  if (!client_)
+  if (!hasClient())
     return;
   UpdateSmoothnessTakesPriority(false);
   if (output_surface_proxy_.get())
@@ -97,6 +97,7 @@ void CompositorOutputSurface::SendFrameToParentCompositor(
     cc::CompositorFrame* frame) {
   DCHECK(CalledOnValidThread());
   Send(new ViewHostMsg_SwapCompositorFrame(routing_id_, *frame));
+  DidSwapBuffers();
 }
 
 void CompositorOutputSurface::SwapBuffers(
@@ -125,7 +126,7 @@ void CompositorOutputSurface::PostSubBuffer(
 
 void CompositorOutputSurface::OnMessageReceived(const IPC::Message& message) {
   DCHECK(CalledOnValidThread());
-  if (!client_)
+  if (!hasClient())
     return;
   IPC_BEGIN_MESSAGE_MAP(CompositorOutputSurface, message)
     IPC_MESSAGE_HANDLER(ViewMsg_UpdateVSyncParameters, OnUpdateVSyncParameters);
@@ -139,23 +140,24 @@ void CompositorOutputSurface::OnMessageReceived(const IPC::Message& message) {
 void CompositorOutputSurface::OnUpdateVSyncParameters(
     base::TimeTicks timebase, base::TimeDelta interval) {
   DCHECK(CalledOnValidThread());
-  client_->OnVSyncParametersChanged(timebase, interval);
+  OnVSyncParametersChanged(timebase, interval);
 }
 
 #if defined(OS_ANDROID)
 void CompositorOutputSurface::SetNeedsBeginFrame(bool enable) {
   DCHECK(CalledOnValidThread());
   Send(new ViewHostMsg_SetNeedsBeginFrame(routing_id_, enable));
+  OutputSurface::SetNeedsBeginFrame(enable);
 }
 
 void CompositorOutputSurface::OnBeginFrame(base::TimeTicks frame_time) {
   DCHECK(CalledOnValidThread());
-  client_->BeginFrame(frame_time);
+  BeginFrame(frame_time);
 }
 #endif  // defined(OS_ANDROID)
 
 void CompositorOutputSurface::OnSwapAck(const cc::CompositorFrameAck& ack) {
-  client_->OnSendFrameToParentCompositorAck(ack);
+  OnSendFrameToParentCompositorAck(ack);
 }
 
 bool CompositorOutputSurface::Send(IPC::Message* message) {