Move InterpolationEffect to oilpan's heap

Source/core/animation/InterpolationEffect.h

Index: Source/core/animation/InterpolationEffect.h
diff --git a/Source/core/animation/InterpolationEffect.h b/Source/core/animation/InterpolationEffect.h
index ec7e70ae625dac0e4ac850bf7c68c8fd621bb2e8..4c7c2b759e8f437633c29224a94469855e4493fa 100644
--- a/Source/core/animation/InterpolationEffect.h
+++ b/Source/core/animation/InterpolationEffect.h
@@ -12,9 +12,9 @@
 
 namespace WebCore {
 
-class InterpolationEffect : public RefCounted<InterpolationEffect> {
+class InterpolationEffect : public RefCountedWillBeGarbageCollected<InterpolationEffect> {
 public:
-    static PassRefPtr<InterpolationEffect> create() { return adoptRef(new InterpolationEffect()); }
+    static PassRefPtrWillBeRawPtr<InterpolationEffect> create() { return adoptRefWillBeNoop(new InterpolationEffect()); }
 
     PassOwnPtrWillBeRawPtr<WillBeHeapVector<RefPtrWillBeMember<Interpolation> > > getActiveInterpolations(double fraction, double iterationDuration) const;
 
@@ -23,6 +23,8 @@ public:
         m_interpolations.append(InterpolationRecord::create(interpolation, easing, start, end, applyFrom, applyTo));
     }
 
+    void trace(Visitor*);
+
 private:
     InterpolationEffect()
     {
@@ -56,7 +58,7 @@ private:
         }
     };
 
-    WillBePersistentHeapVector<OwnPtrWillBeMember<InterpolationRecord> > m_interpolations;
+    WillBeHeapVector<OwnPtrWillBeMember<InterpolationRecord> > m_interpolations;
 };
 
 }