Oilpan: fix build after r189490 (a22afce3).

Source/core/animation/Interpolation.h

 // Copyright 2014 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 Interpolation_h
 #define Interpolation_h
 
 #include "core/animation/InterpolableValue.h"
 #include "platform/heap/Handle.h"
 
 namespace blink {
 
-class Interpolation : public RefCountedWillBeGarbageCollected<Interpolation> {
-    DECLARE_EMPTY_VIRTUAL_DESTRUCTOR_WILL_BE_REMOVED(Interpolation);
+class Interpolation : public RefCountedWillBeGarbageCollectedFinalized<Interpolation> {
 public:
     static PassRefPtrWillBeRawPtr<Interpolation> create(PassOwnPtrWillBeRawPtr<InterpolableValue> start, PassOwnPtrWillBeRawPtr<InterpolableValue> end)
     {
         return adoptRefWillBeNoop(new Interpolation(start, end));
     }
 
+    virtual ~Interpolation();
+
     void interpolate(int iteration, double fraction) const;
 
     virtual bool isStyleInterpolation() const { return false; }
     virtual bool isLegacyStyleInterpolation() const { return false; }
 
     virtual void trace(Visitor*);
 
 protected:
     const OwnPtrWillBeMember<InterpolableValue> m_start;
     const OwnPtrWillBeMember<InterpolableValue> m_end;
@@ skipping 10 matching lines @@
     friend class AnimationInterpolableValueTest;
     friend class AnimationInterpolationEffectTest;
     friend class AnimationDoubleStyleInterpolationTest;
     friend class AnimationVisibilityStyleInterpolationTest;
     friend class AnimationColorStyleInterpolationTest;
 };
 
 } // namespace blink
 
 #endif // Interpolation_h