[Oilpan] Migrate most classes under core/animations to Oilpan heap.

Source/core/animation/Interpolation.h

Index: Source/core/animation/Interpolation.h
diff --git a/Source/core/animation/Interpolation.h b/Source/core/animation/Interpolation.h
index c3c62cd9219b4dada27cc4aa122ca627a45856de..dbf45a8fb8f11f5a6b6c620abec1375aa7c0aa7f 100644
--- a/Source/core/animation/Interpolation.h
+++ b/Source/core/animation/Interpolation.h
@@ -13,7 +13,7 @@ namespace blink {
 
 class PropertyHandle;
 
-class CORE_EXPORT Interpolation : public RefCountedWillBeGarbageCollectedFinalized<Interpolation> {
+class CORE_EXPORT Interpolation : public GarbageCollectedFinalized<Interpolation> {
 public:
     virtual ~Interpolation();
 
@@ -28,14 +28,14 @@ public:
     DECLARE_VIRTUAL_TRACE();
 
 protected:
-    const OwnPtrWillBeMember<InterpolableValue> m_start;
-    const OwnPtrWillBeMember<InterpolableValue> m_end;
+    const Member<InterpolableValue> m_start;
+    const Member<InterpolableValue> m_end;
 
     mutable double m_cachedFraction;
     mutable int m_cachedIteration;
-    mutable OwnPtrWillBeMember<InterpolableValue> m_cachedValue;
+    mutable Member<InterpolableValue> m_cachedValue;
 
-    Interpolation(PassOwnPtrWillBeRawPtr<InterpolableValue> start, PassOwnPtrWillBeRawPtr<InterpolableValue> end);
+    Interpolation(InterpolableValue* start, InterpolableValue* end);
 
 private:
     InterpolableValue* getCachedValueForTesting() const { return m_cachedValue.get(); }