Remove default begin frame sources from the 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 f341e25fbb002293ed6464c8911c4934f0b20400..de11e048870d5df9c093e4b0caf36c5c17496122 100644
--- a/content/renderer/gpu/compositor_output_surface.cc
+++ b/content/renderer/gpu/compositor_output_surface.cc
@@ -135,24 +135,11 @@ void CompositorOutputSurface::OnMessageReceived(const IPC::Message& message) {
   if (!HasClient())
     return;
   IPC_BEGIN_MESSAGE_MAP(CompositorOutputSurface, message)
-    IPC_MESSAGE_HANDLER(ViewMsg_UpdateVSyncParameters,
-                        OnUpdateVSyncParametersFromBrowser);
     IPC_MESSAGE_HANDLER(ViewMsg_ReclaimCompositorResources,
                         OnReclaimCompositorResources);
   IPC_END_MESSAGE_MAP()
 }
 
-void CompositorOutputSurface::OnUpdateVSyncParametersFromBrowser(
-    base::TimeTicks timebase,
-    base::TimeDelta interval) {
-  DCHECK(client_thread_checker_.CalledOnValidThread());
-  TRACE_EVENT2("cc",
-               "CompositorOutputSurface::OnUpdateVSyncParametersFromBrowser",
-               "timebase", (timebase - base::TimeTicks()).InSecondsF(),
-               "interval", interval.InSecondsF());
-  client_->CommitVSyncParameters(timebase, interval);
-}
-
 void CompositorOutputSurface::OnReclaimCompositorResources(
     uint32_t output_surface_id,
     bool is_swap_ack,