Aura: Resize locks with --ui-enable-threaded-compositing

ui/compositor/compositor_observer.h

Index: ui/compositor/compositor_observer.h
diff --git a/ui/compositor/compositor_observer.h b/ui/compositor/compositor_observer.h
index 830f170ca22d8c69336ab08a4003c64fa3146829..4bdf4452b44f0dad3281b89d85fe071107c9f231 100644
--- a/ui/compositor/compositor_observer.h
+++ b/ui/compositor/compositor_observer.h
@@ -14,17 +14,6 @@ class Compositor;
 // A compositor observer is notified when compositing completes.
 class COMPOSITOR_EXPORT CompositorObserver {
  public:
-  // A commit proxies information from the main thread to the compositor
-  // thread. It typically happens when some state changes that will require a
-  // composite. In the multi-threaded case, many commits may happen between
-  // two successive composites. In the single-threaded, a single commit
-  // between two composites (just before the composite as part of the
-  // composite cycle).
-  virtual void OnCompositingDidCommit(Compositor* compositor) = 0;
-
-  // Called when compositing will start.
-  virtual void OnCompositingWillStart(Compositor* compositor) = 0;
-
   // Called when compositing started: it has taken all the layer changes into
   // account and has issued the graphics commands.
   virtual void OnCompositingStarted(Compositor* compositor) = 0;