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

content/browser/renderer_host/render_widget_host_view_android.cc

Index: content/browser/renderer_host/render_widget_host_view_android.cc
diff --git a/content/browser/renderer_host/render_widget_host_view_android.cc b/content/browser/renderer_host/render_widget_host_view_android.cc
index 445ca9c5777504b64ff9b71e8087c836e9363b16..1dcd30dcd6009b5195d559a43f8f944a9650383e 100644
--- a/content/browser/renderer_host/render_widget_host_view_android.cc
+++ b/content/browser/renderer_host/render_widget_host_view_android.cc
@@ -408,6 +408,7 @@ void RenderWidgetHostViewAndroid::OnDidChangeBodyBackgroundColor(
 
 void RenderWidgetHostViewAndroid::SendBeginFrame(
     base::TimeTicks frame_time) {
+  TRACE_EVENT0("cc", "RenderWidgetHostViewAndroid::SendBeginFrame");
   if (host_)
     host_->Send(new ViewMsg_BeginFrame(host_->GetRoutingID(),
                                        frame_time));
@@ -415,6 +416,8 @@ void RenderWidgetHostViewAndroid::SendBeginFrame(
 
 void RenderWidgetHostViewAndroid::OnSetNeedsBeginFrame(
     bool enabled) {
+  TRACE_EVENT1("cc", "RenderWidgetHostViewAndroid::OnSetNeedsBeginFrame",
+               "enabled", enabled);
   if (content_view_core_)
     content_view_core_->SetVSyncNotificationEnabled(enabled);
 }