cc: Make scheduling be driven by vsync for android webview.

cc/trees/thread_proxy.cc

Index: cc/trees/thread_proxy.cc
diff --git a/cc/trees/thread_proxy.cc b/cc/trees/thread_proxy.cc
index e6ab017d37e221a5235d82502a341c22aa1bc35c..812a7f1d62706611e3c0e5e8fedea552502b6f2f 100644
--- a/cc/trees/thread_proxy.cc
+++ b/cc/trees/thread_proxy.cc
@@ -463,6 +463,12 @@ void ThreadProxy::SetNeedsRedrawOnImplThread() {
   impl().scheduler->SetNeedsRedraw();
 }
 
+void ThreadProxy::OutputSurfaceDidRequestDraw() {

[brianderson, 2014/12/20 00:34:13]

OutputSurfaceDidRequestDrawOnImplThread

[sunnyps, 2014/12/20 00:39:30]

Acknowledged.

+  TRACE_EVENT0("cc", "ThreadProxy::OutputSurfaceDidRequestDraw");
+  DCHECK(IsImplThread());
+  impl().scheduler->OutputSurfaceDidRequestDraw();
+}
+
 void ThreadProxy::SetNeedsAnimateOnImplThread() {
   TRACE_EVENT0("cc", "ThreadProxy::SetNeedsAnimateOnImplThread");
   DCHECK(IsImplThread());
@@ -1075,6 +1081,12 @@ DrawResult ThreadProxy::ScheduledActionDrawAndSwapForced() {
   return DrawSwapInternal(forced_draw);
 }
 
+void ThreadProxy::ScheduledActionInvalidateOutputSurface() {
+  TRACE_EVENT0("cc", "ThreadProxy::ScheduledActionInvalidateOutputSurface");
+  DCHECK(impl().layer_tree_host_impl->output_surface());
+  impl().layer_tree_host_impl->output_surface()->Invalidate();
+}
+
 void ThreadProxy::DidAnticipatedDrawTimeChange(base::TimeTicks time) {
   if (impl().current_resource_update_controller)
     impl().current_resource_update_controller->PerformMoreUpdates(time);