Animation: Cancel same-property animations on compositor

Source/core/animation/KeyframeEffectModel.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 112 matching lines @@
     // to get the 'property-specific keyframes'. For efficiency, we cache the
     // property-specific lists.
     using KeyframeGroupMap = WillBeHeapHashMap<CSSPropertyID, OwnPtrWillBeMember<PropertySpecificKeyframeGroup>>;
     mutable OwnPtrWillBeMember<KeyframeGroupMap> m_keyframeGroups;
     mutable RefPtrWillBeMember<InterpolationEffect> m_interpolationEffect;
 
     mutable bool m_hasSyntheticKeyframes;
 
     friend class KeyframeEffectModelTest;
 
-    bool affects(CSSPropertyID property)
+    bool affects(CSSPropertyID property) const override
     {
         ensureKeyframeGroups();
         return m_keyframeGroups->contains(property);
     }
 };
 
 template <class Keyframe>
 class KeyframeEffectModel final : public KeyframeEffectModelBase {
 public:
     using KeyframeVector = WillBeHeapVector<RefPtrWillBeMember<Keyframe>>;
@@ skipping 36 matching lines @@
 
 template <>
 inline bool KeyframeEffectModel<AnimatableValueKeyframe>::isAnimatableValueKeyframeEffectModel() const { return true; }
 
 template <>
 inline bool KeyframeEffectModel<StringKeyframe>::isStringKeyframeEffectModel() const { return true; }
 
 } // namespace blink
 
 #endif // KeyframeEffectModel_h