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

cc/trees/single_thread_proxy.cc

Index: cc/trees/single_thread_proxy.cc
diff --git a/cc/trees/single_thread_proxy.cc b/cc/trees/single_thread_proxy.cc
index f16803d1a74f78ffeeca8333810cbd4df724bc47..3633585cb1fd3148417367686b811631c09560d7 100644
--- a/cc/trees/single_thread_proxy.cc
+++ b/cc/trees/single_thread_proxy.cc
@@ -560,10 +560,6 @@
   layer_tree_host_->DidCompleteSwapBuffers();
 }
 
-void SingleThreadProxy::OnDrawForOutputSurface() {
-  NOTREACHED() << "Implemented by ThreadProxy for synchronous compositor.";
-}
-
 void SingleThreadProxy::CompositeImmediately(base::TimeTicks frame_begin_time) {
   TRACE_EVENT0("cc,benchmark", "SingleThreadProxy::CompositeImmediately");
   DCHECK(Proxy::IsMainThread());
@@ -580,7 +576,7 @@
   {
     BeginFrameArgs begin_frame_args(BeginFrameArgs::Create(
         BEGINFRAME_FROM_HERE, frame_begin_time, base::TimeTicks(),
-        BeginFrameArgs::DefaultInterval(), BeginFrameArgs::NORMAL));
+        BeginFrameArgs::DefaultInterval(), BeginFrameArgs::SYNCHRONOUS));
     DoBeginMainFrame(begin_frame_args);
     DoCommit();
 
@@ -914,10 +910,6 @@
   layer_tree_host_impl_->PrepareTiles();
 }
 
-void SingleThreadProxy::ScheduledActionInvalidateOutputSurface() {
-  NOTREACHED();
-}
-
 void SingleThreadProxy::DidAnticipatedDrawTimeChange(base::TimeTicks time) {
 }