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

Source/core/animation/PointSVGInterpolation.h

Index: Source/core/animation/PointSVGInterpolation.h
diff --git a/Source/core/animation/PointSVGInterpolation.h b/Source/core/animation/PointSVGInterpolation.h
index 0fddc78a70bb2fe582c318c6c16bc67f90766be4..c5c2dd6b5b7a87f588ae34b038c1c0502601e9f1 100644
--- a/Source/core/animation/PointSVGInterpolation.h
+++ b/Source/core/animation/PointSVGInterpolation.h
@@ -17,12 +17,12 @@ public:
     typedef SVGPointList ListType;
     typedef void NonInterpolableType;
 
-    static PassOwnPtrWillBeRawPtr<InterpolableList> toInterpolableValue(SVGPropertyBase* item)
+    static InterpolableList* toInterpolableValue(SVGPropertyBase* item)
     {
-        OwnPtrWillBeRawPtr<InterpolableList> result = InterpolableList::create(2);
+        InterpolableList* result = InterpolableList::create(2);
         result->set(0, InterpolableNumber::create(toSVGPoint(item)->x()));
         result->set(1, InterpolableNumber::create(toSVGPoint(item)->y()));
-        return result.release();
+        return result;
     }
 
     static PassRefPtrWillBeRawPtr<SVGPoint> fromInterpolableValue(const InterpolableValue& value)