Provide a vsync notification to the renderer

content/browser/renderer_host/render_widget_host_impl.cc

Index: content/browser/renderer_host/render_widget_host_impl.cc
diff --git a/content/browser/renderer_host/render_widget_host_impl.cc b/content/browser/renderer_host/render_widget_host_impl.cc
index 75ab862e158a37cdb82d808acf7956c043bbcec4..ed892383487aca8e0b27a8a239a4659ce80d0044 100644
--- a/content/browser/renderer_host/render_widget_host_impl.cc
+++ b/content/browser/renderer_host/render_widget_host_impl.cc
@@ -349,6 +349,8 @@ bool RenderWidgetHostImpl::OnMessageReceived(const IPC::Message &msg) {
     IPC_MESSAGE_HANDLER(ViewHostMsg_CompositorSurfaceBuffersSwapped,
                         OnCompositorSurfaceBuffersSwapped)
     IPC_MESSAGE_HANDLER(ViewHostMsg_SwapCompositorFrame, OnSwapCompositorFrame)
+    IPC_MESSAGE_HANDLER(ViewHostMsg_EnableVSyncNotification,
+                        OnEnableVSyncNotification)
     IPC_MESSAGE_HANDLER(ViewHostMsg_UpdateRect, OnUpdateRect)
     IPC_MESSAGE_HANDLER(ViewHostMsg_UpdateIsDelayed, OnUpdateIsDelayed)
     IPC_MESSAGE_HANDLER(ViewHostMsg_HandleInputEvent_ACK, OnInputEventAck)
@@ -1222,6 +1224,10 @@ void RenderWidgetHostImpl::UpdateVSyncParameters(base::TimeTicks timebase,
   Send(new ViewMsg_UpdateVSyncParameters(GetRoutingID(), timebase, interval));
 }
 
+void RenderWidgetHostImpl::SendVSync(base::TimeTicks frame_time) {
+  Send(new ViewMsg_DidVSync(GetRoutingID(), frame_time));
+}
+
 void RenderWidgetHostImpl::RendererExited(base::TerminationStatus status,
                                           int exit_code) {
   // Clearing this flag causes us to re-create the renderer when recovering
@@ -1551,6 +1557,12 @@ void RenderWidgetHostImpl::OnSwapCompositorFrame(
 #endif
 }
 
+void RenderWidgetHostImpl::OnEnableVSyncNotification(bool enable) {
+  TRACE_EVENT1("renderer_host",
+      "RenderWidgetHostImpl::OnEnableVSyncNotification", "enable", enable);
+  view_->EnableVSyncNotification(enable);
+}
+
 void RenderWidgetHostImpl::OnUpdateRect(
     const ViewHostMsg_UpdateRect_Params& params) {
   TRACE_EVENT0("renderer_host", "RenderWidgetHostImpl::OnUpdateRect");