Revert of 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 997021ef1135286b85b8f6b20f75280d2034c946..33612b0acb372936fd2e6a378a4caad2d6cae38b 100644
--- a/content/renderer/gpu/render_widget_compositor.cc
+++ b/content/renderer/gpu/render_widget_compositor.cc
@@ -320,6 +320,7 @@
 RenderWidgetCompositor::RenderWidgetCompositor(RenderWidget* widget,
                                                bool threaded)
     : threaded_(threaded),
+      suppress_schedule_composite_(false),
       widget_(widget) {
 }
 
@@ -331,11 +332,24 @@
 }
 
 void RenderWidgetCompositor::SetSuppressScheduleComposite(bool suppress) {
-  layer_tree_host_->SetDeferCommits(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;
 }
 
 bool RenderWidgetCompositor::BeginMainFrameRequested() const {
   return layer_tree_host_->BeginMainFrameRequested();
+}
+
+void RenderWidgetCompositor::UpdateAnimations(base::TimeTicks time) {
+  layer_tree_host_->UpdateClientAnimations(time);
 }
 
 void RenderWidgetCompositor::SetNeedsDisplayOnAllLayers() {
@@ -430,10 +444,7 @@
 }
 
 void RenderWidgetCompositor::setSurfaceReady() {
-  // In tests without a RenderThreadImpl, don't set ready as this kicks
-  // off creating output surfaces that the test can't create.
-  if (RenderThreadImpl::current())
-    layer_tree_host_->SetLayerTreeHostClientReady();
+  layer_tree_host_->SetLayerTreeHostClientReady();
 }
 
 void RenderWidgetCompositor::setRootLayer(const blink::WebLayer& layer) {
@@ -672,6 +683,15 @@
     widget_->OnSwapBuffersComplete();
 }
 
+void RenderWidgetCompositor::ScheduleComposite() {
+  if (!suppress_schedule_composite_)
+    widget_->scheduleComposite();
+}
+
+void RenderWidgetCompositor::ScheduleAnimation() {
+  widget_->scheduleAnimation();
+}
+
 void RenderWidgetCompositor::DidPostSwapBuffers() {
   widget_->OnSwapBuffersPosted();
 }