Replace AnimatableValues with ComputedStyle references for CSS Transitions

third_party/WebKit/Source/core/animation/css/CSSAnimations.h

 /*
  * Copyright (C) 2013 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 126 matching lines @@
     unsigned style_rule_version;
   };
 
   struct RunningTransition {
     DISALLOW_NEW_EXCEPT_PLACEMENT_NEW();
 
    public:
     DEFINE_INLINE_TRACE() { visitor->Trace(animation); }
 
     Member<Animation> animation;
-    RefPtr<AnimatableValue> from;
-    RefPtr<AnimatableValue> to;
-    RefPtr<AnimatableValue> reversing_adjusted_start_value;
+    RefPtr<const ComputedStyle> from;
+    RefPtr<const ComputedStyle> to;
+    RefPtr<const ComputedStyle> reversing_adjusted_start_value;
     double reversing_shortening_factor;
   };
 
   HeapVector<Member<RunningAnimation>> running_animations_;
 
   using TransitionMap = HeapHashMap<PropertyHandle, RunningTransition>;
   TransitionMap transitions_;
 
   CSSAnimationUpdate pending_update_;
 
   ActiveInterpolationsMap previous_active_interpolations_for_animations_;
 
   struct TransitionUpdateState {
     STACK_ALLOCATED();
     CSSAnimationUpdate& update;
     Member<const Element> animating_element;
     const ComputedStyle& old_style;
     const ComputedStyle& style;
+    RefPtr<const ComputedStyle> cloned_style;
     const TransitionMap* active_transitions;
     HashSet<PropertyHandle>& listed_properties;
     const CSSTransitionData& transition_data;
   };
 
   static void CalculateTransitionUpdateForCustomProperty(
       TransitionUpdateState&,
       const CSSTransitionData::TransitionProperty&,
       size_t transition_index);
 
@@ skipping 62 matching lines @@
 
     Member<Element> transition_target_;
     PropertyHandle property_;
     AnimationEffectReadOnly::Phase previous_phase_;
   };
 };
 
 }  // namespace blink
 
 #endif