Enable BeginFrame scheduling on aura

content/browser/renderer_host/render_widget_host_view_mac.mm

Index: content/browser/renderer_host/render_widget_host_view_mac.mm
diff --git a/content/browser/renderer_host/render_widget_host_view_mac.mm b/content/browser/renderer_host/render_widget_host_view_mac.mm
index 7f0cb00b2ee7c1b378ce5c85b43fe88bab9c76ab..010bf8b25e82cf41154e95324a61a3de649e056c 100644
--- a/content/browser/renderer_host/render_widget_host_view_mac.mm
+++ b/content/browser/renderer_host/render_widget_host_view_mac.mm
@@ -440,12 +440,6 @@ void RenderWidgetHostViewMac::DelegatedFrameHostOnLostCompositorResources() {
   render_widget_host_->ScheduleComposite();
 }
 
-void RenderWidgetHostViewMac::DelegatedFrameHostUpdateVSyncParameters(

[danakj, 2015/03/25 17:40:38]

So what's the expected outcome on Mac for this patch?

[simonhong, 2015/03/25 18:05:22]

So far, this function was never called because Mac doesn't get vsync from gpu.
So, we can delete this.

-    const base::TimeTicks& timebase,
-    const base::TimeDelta& interval) {
-  render_widget_host_->UpdateVSyncParameters(timebase, interval);
-}
-
 ////////////////////////////////////////////////////////////////////////////////
 // AcceleratedWidgetMacNSView, public: