Reland r107720 - Enable the new layer animation framework.

ui/gfx/compositor/layer_animation_sequence.h

 // Copyright (c) 2011 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_SEQUENCE_H_
 #define UI_GFX_COMPOSITOR_LAYER_ANIMATION_SEQUENCE_H_
 #pragma once
 
 #include <vector>
 
@@ skipping 19 matching lines @@
   LayerAnimationSequence();
   // Takes ownership of the given element and adds it to the sequence.
   explicit LayerAnimationSequence(LayerAnimationElement* element);
   virtual ~LayerAnimationSequence();
 
   // Updates the delegate to the appropriate value for |elapsed|, which is in
   // the range [0, Duration()].  If the animation is not aborted, it is
   // guaranteed that Animate will be called with elapsed = Duration().
   void Progress(base::TimeDelta elapsed, LayerAnimationDelegate* delegate);
 
+  // Sets the target value to the value that would have been set had
+  // the sequence completed. Does nothing if the sequence is cyclic.
+  void GetTargetValue(LayerAnimationElement::TargetValue* target) const;
+
   // Aborts the given animation.
   void Abort();
 
   // All properties modified by the sequence.
   const LayerAnimationElement::AnimatableProperties& properties() const {
     return properties_;
   }
 
   // The total, finite duration of one cycle of the sequence.
   base::TimeDelta duration() const {
@@ skipping 31 matching lines @@
   // These are used when animating to efficiently find the next element.
   size_t last_element_;
   base::TimeDelta last_start_;
 
   DISALLOW_COPY_AND_ASSIGN(LayerAnimationSequence);
 };
 
 }  // namespace ui
 
 #endif  // UI_GFX_COMPOSITOR_LAYER_ANIMATION_SEQUENCE_H_