Move AnimationValue onto the heap

Source/core/animation/InvalidatableStyleInterpolation.h

 // Copyright 2015 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 InvalidatableStyleInterpolation_h
 #define InvalidatableStyleInterpolation_h
 
 #include "core/animation/AnimationType.h"
 #include "core/animation/AnimationValue.h"
 #include "core/animation/PrimitiveInterpolation.h"
@@ skipping 29 matching lines @@
 
 private:
     InvalidatableStyleInterpolation(
         const Vector<const AnimationType*>& animationTypes,
         const CSSPropertySpecificKeyframe& startKeyframe,
         const CSSPropertySpecificKeyframe& endKeyframe);
 
     void ensureValidInterpolation(const StyleResolverState&) const;
     bool isCacheValid(const StyleResolverState&) const;
     bool maybeCachePairwiseConversion(const StyleResolverState*) const;
-    PassOwnPtrWillBeRawPtr<FlipPrimitiveInterpolation::Side> convertSingleKeyframe(const CSSPropertySpecificKeyframe&, const StyleResolverState&) const;
+    PassOwnPtrWillBeRawPtr<AnimationValue> convertSingleKeyframe(const CSSPropertySpecificKeyframe&, const StyleResolverState&) const;
 
     const Vector<const AnimationType*>& m_animationTypes;
     const CSSPropertySpecificKeyframe& m_startKeyframe;
     const CSSPropertySpecificKeyframe& m_endKeyframe;
     double m_currentFraction;
     mutable OwnPtrWillBeMember<PrimitiveInterpolation> m_cachedConversion;
     mutable AnimationType::ConversionCheckers m_conversionCheckers;
-    mutable AnimationValue m_cachedValue;
+    mutable OwnPtrWillBeRawPtr<AnimationValue> m_cachedValue;
 };
 
 DEFINE_TYPE_CASTS(InvalidatableStyleInterpolation, Interpolation, value, value->isInvalidatableStyleInterpolation(), value.isInvalidatableStyleInterpolation());
 
 } // namespace blink
 
 #endif // InvalidatableStyleInterpolation_h