Revert 153291 - Fixes crash introduced @ 153047 (you can hit crash by maximizing a

ui/compositor/layer_animator.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_COMPOSITOR_LAYER_ANIMATOR_H_
 #define UI_COMPOSITOR_LAYER_ANIMATOR_H_
 
 #include <deque>
 #include <vector>
 
@@ skipping 288 matching lines @@
   // Slows down all animations for visual debugging.
   static bool slow_animation_mode_;
 
   // Amount to slow animations for debugging.
   static int slow_animation_scale_factor_;
 
   // Observers are notified when layer animations end, are scheduled or are
   // aborted.
   ObserverList<LayerAnimationObserver> observers_;
 
-  // Set to true in the destructor (if non-NULL). Used to detect deletion while
-  // calling out.
-  bool* destroyed_;
-
   DISALLOW_COPY_AND_ASSIGN(LayerAnimator);
 };
 
 }  // namespace ui
 
 #endif  // UI_COMPOSITOR_LAYER_ANIMATOR_H_