Oilpan: Move Interpolation's hierarchy to oilpan's heap

Source/core/animation/KeyframeEffectModel.h

Index: Source/core/animation/KeyframeEffectModel.h
diff --git a/Source/core/animation/KeyframeEffectModel.h b/Source/core/animation/KeyframeEffectModel.h
index f1b82ef1a39e4126ca4e00ce0f58b81a9c0b810e..9c268d84a7f0a34063b16e4df85ee8b4cb6e152a 100644
--- a/Source/core/animation/KeyframeEffectModel.h
+++ b/Source/core/animation/KeyframeEffectModel.h
@@ -103,7 +103,7 @@ public:
     }
 
     // AnimationEffect implementation.
-    virtual PassOwnPtr<Vector<RefPtr<Interpolation> > > sample(int iteration, double fraction, double iterationDuration) const OVERRIDE;
+    virtual PassOwnPtrWillBeRawPtr<WillBeHeapVector<RefPtrWillBeMember<Interpolation> > > sample(int iteration, double fraction, double iterationDuration) const OVERRIDE;
 
     // FIXME: Implement setFrames()
     const KeyframeVector& getFrames() const { return m_keyframes; }