reland -- Disable animations during aura tests.

ui/gfx/compositor/layer_animation_observer.h

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef UI_GFX_COMPOSITOR_LAYER_ANIMATION_OBSERVER_H_
 #define UI_GFX_COMPOSITOR_LAYER_ANIMATION_OBSERVER_H_
 #pragma once
 
 #include <set>
 
 #include "base/basictypes.h"
 #include "base/compiler_specific.h"
 #include "ui/gfx/compositor/compositor_export.h"
 
 namespace ui {
 
 class LayerAnimationSequence;
 class ScopedLayerAnimationSettings;
+class ImplicitAnimationObserver;
 
 // LayerAnimationObservers are notified when animations complete.
 class COMPOSITOR_EXPORT LayerAnimationObserver  {
  public:
   // Called when the |sequence| ends. Not called if |sequence| is aborted.
   virtual void OnLayerAnimationEnded(
       const LayerAnimationSequence* sequence) = 0;
 
   // Called if |sequence| is aborted for any reason. Should never do anything
   // that may cause another animation to be started.
   virtual void OnLayerAnimationAborted(
       const LayerAnimationSequence* sequence) = 0;
 
   // Called when the animation is scheduled.
   virtual void OnLayerAnimationScheduled(
       const LayerAnimationSequence* sequence) = 0;
 
   // If the animator is destroyed during an animation, the animations are
   // aborted. The resulting NotifyAborted notifications will NOT be sent to
   // this observer if this function returns false. NOTE: IF YOU OVERRIDE THIS
   // FUNCTION TO RETURN TRUE, YOU MUST REMEMBER TO REMOVE YOURSELF AS AN
   // OBSERVER WHEN YOU ARE DESTROYED.
   virtual bool RequiresNotificationWhenAnimatorDestroyed() const;
 
+  virtual ImplicitAnimationObserver* AsImplicitObserver() { return NULL; }
+
  protected:
   LayerAnimationObserver();
   virtual ~LayerAnimationObserver();
 
  private:
   friend class LayerAnimationSequence;
 
   // Called when |this| is added to |sequence|'s observer list.
   void AttachedToSequence(LayerAnimationSequence* sequence);
 
@@ skipping 21 matching lines @@
   bool active() const { return active_; }
   void SetActive(bool active);
 
   // LayerAnimationObserver implementation
   virtual void OnLayerAnimationEnded(
       const LayerAnimationSequence* sequence) OVERRIDE;
   virtual void OnLayerAnimationAborted(
       const LayerAnimationSequence* sequence) OVERRIDE;
   virtual void OnLayerAnimationScheduled(
       const LayerAnimationSequence* sequence) OVERRIDE;
+  virtual ImplicitAnimationObserver* AsImplicitObserver() { return this; }
 
   void CheckCompleted();
 
   bool active_;
 
   // This tracks the number of scheduled animations that have yet to complete.
   // If this value is zero, and the observer is active, then
   // OnImplicitAnimationsCompleted is fired.
   size_t animation_count_;
 };
 
 }  // namespace ui
 
 #endif  // UI_GFX_COMPOSITOR_LAYER_ANIMATION_OBSERVER_H_