Oilpan: Completely move core/animations/ to oilpan's heap

Source/core/animation/ElementAnimation.h

Index: Source/core/animation/ElementAnimation.h
diff --git a/Source/core/animation/ElementAnimation.h b/Source/core/animation/ElementAnimation.h
index da1500551d3edf3d75513bb9c32b2a3e8dacabc5..c135b7e463e7fc74918a7f83408faaac602323c9 100644
--- a/Source/core/animation/ElementAnimation.h
+++ b/Source/core/animation/ElementAnimation.h
@@ -90,7 +90,7 @@ private:
     static AnimationPlayer* animateInternal(Element& element, PassRefPtrWillBeRawPtr<AnimationEffect> effect, const Timing& timing)
     {
         if (RuntimeEnabledFeatures::webAnimationsElementAnimateEnabled()) {
-            RefPtr<Animation> animation = Animation::create(&element, effect, timing);
+            RefPtrWillBeRawPtr<Animation> animation = Animation::create(&element, effect, timing);
             return element.document().timeline().play(animation.get());
         }
         return 0;