Revert of Make SingleThreadProxy a SchedulerClient

cc/test/layer_tree_test.h

Index: cc/test/layer_tree_test.h
diff --git a/cc/test/layer_tree_test.h b/cc/test/layer_tree_test.h
index 619ae9648d59b0da0251399a4642ee2b7540c4cb..8f38dda4999dd8648aac24224560414e7a49b2e8 100644
--- a/cc/test/layer_tree_test.h
+++ b/cc/test/layer_tree_test.h
@@ -71,6 +71,8 @@
   virtual void DidCommit() {}
   virtual void DidCommitAndDrawFrame() {}
   virtual void DidCompleteSwapBuffers() {}
+  virtual void ScheduleComposite() {}
+  virtual void ScheduleAnimation() {}
   virtual void DidDeferCommit() {}
   virtual void DidSetVisibleOnImplTree(LayerTreeHostImpl* host_impl,
                                        bool visible) {}
@@ -137,6 +139,8 @@
 
   virtual void InitializeSettings(LayerTreeSettings* settings) {}
 
+  virtual void ScheduleComposite() OVERRIDE;
+
   void RealEndTest();
 
   virtual void DispatchAddAnimation(Layer* layer_to_receive_animation,
@@ -147,6 +151,7 @@
   void DispatchSetNeedsRedrawRect(const gfx::Rect& damage_rect);
   void DispatchSetVisible(bool visible);
   void DispatchSetNextCommitForcesRedraw();
+  void DispatchComposite();
   void DispatchDidAddAnimation();
 
   virtual void AfterTest() = 0;
@@ -199,6 +204,7 @@
   bool end_when_begin_returns_;
   bool timed_out_;
   bool scheduled_;
+  bool schedule_when_set_visible_true_;
   bool started_;
   bool ended_;
   bool delegating_renderer_;