Make SingleThreadProxy a SchedulerClient

content/renderer/gpu/render_widget_compositor.cc

Index: content/renderer/gpu/render_widget_compositor.cc
diff --git a/content/renderer/gpu/render_widget_compositor.cc b/content/renderer/gpu/render_widget_compositor.cc
index f974828d94a1916a305bc8849e147573a6c1fd56..8d5049e9b097aed3801562a25b29240a8d0bdf7b 100644
--- a/content/renderer/gpu/render_widget_compositor.cc
+++ b/content/renderer/gpu/render_widget_compositor.cc
@@ -323,7 +323,6 @@ scoped_ptr<RenderWidgetCompositor> RenderWidgetCompositor::Create(
 RenderWidgetCompositor::RenderWidgetCompositor(RenderWidget* widget,
                                                bool threaded)
     : threaded_(threaded),
-      suppress_schedule_composite_(false),
       widget_(widget) {
 }
 
@@ -335,16 +334,7 @@ RenderWidgetCompositor::GetInputHandler() {
 }
 
 void RenderWidgetCompositor::SetSuppressScheduleComposite(bool suppress) {
-  if (suppress_schedule_composite_ == suppress)
-    return;
-
-  if (suppress)
-    TRACE_EVENT_ASYNC_BEGIN0("gpu",
-        "RenderWidgetCompositor::SetSuppressScheduleComposite", this);
-  else
-    TRACE_EVENT_ASYNC_END0("gpu",
-        "RenderWidgetCompositor::SetSuppressScheduleComposite", this);
-  suppress_schedule_composite_ = suppress;
+  layer_tree_host_->SetDeferCommits(suppress);
 }
 
 bool RenderWidgetCompositor::BeginMainFrameRequested() const {
@@ -687,15 +677,6 @@ void RenderWidgetCompositor::DidCompleteSwapBuffers() {
     widget_->OnSwapBuffersComplete();
 }
 
-void RenderWidgetCompositor::ScheduleComposite() {
-  if (!suppress_schedule_composite_)
-    widget_->scheduleComposite();
-}
-
-void RenderWidgetCompositor::ScheduleAnimation() {
-  widget_->scheduleAnimation();
-}
-
 void RenderWidgetCompositor::DidPostSwapBuffers() {
   widget_->OnSwapBuffersPosted();
 }