Make SingleThreadProxy a SchedulerClient

ui/compositor/compositor.h

Index: ui/compositor/compositor.h
diff --git a/ui/compositor/compositor.h b/ui/compositor/compositor.h
index 79bf691c41520057728284ab3f1d4ba9f165fc77..8e79737bfb0717dc1be18d9fa767dfa9dd9d1961 100644
--- a/ui/compositor/compositor.h
+++ b/ui/compositor/compositor.h
@@ -22,8 +22,6 @@
 #include "ui/gfx/size.h"
 #include "ui/gfx/vector2d.h"
 
-class SkBitmap;
-
 namespace base {
 class MessageLoopProxy;
 class RunLoop;
@@ -157,9 +155,6 @@ class COMPOSITOR_EXPORT Compositor
   // compositing layers on.
   float device_scale_factor() const { return device_scale_factor_; }
 
-  // Draws the scene created by the layer tree and any visual effects.
-  void Draw();
-
   // Where possible, draws are scissored to a damage region calculated from
   // changes to layer properties.  This bypasses that and indicates that
   // the whole frame needs to be drawn.
@@ -258,9 +253,6 @@ class COMPOSITOR_EXPORT Compositor
   // Called to release any pending CompositorLock
   void CancelCompositorLock();
 
-  // Notifies the compositor that compositing is complete.
-  void NotifyEnd();
-
   gfx::Size size_;
 
   ui::ContextFactory* context_factory_;
@@ -289,15 +281,6 @@ class COMPOSITOR_EXPORT Compositor
 
   CompositorLock* compositor_lock_;
 
-  // Prevent more than one draw from being scheduled.
-  bool defer_draw_scheduling_;
-
-  // Used to prevent Draw()s while a composite is in progress.
-  bool waiting_on_compositing_end_;
-  bool draw_on_compositing_end_;
-  enum SwapState { SWAP_NONE, SWAP_POSTED, SWAP_COMPLETED };
-  SwapState swap_state_;
-
   LayerAnimatorCollection layer_animator_collection_;
 
   base::WeakPtrFactory<Compositor> schedule_draw_factory_;