Oilpan: Move CSSAnimationData and CSSAnimationDataList to oilpan's heap

Source/core/rendering/style/StyleRareNonInheritedData.h

Index: Source/core/rendering/style/StyleRareNonInheritedData.h
diff --git a/Source/core/rendering/style/StyleRareNonInheritedData.h b/Source/core/rendering/style/StyleRareNonInheritedData.h
index 09cbf6af6817029ee596fda88294be34d060acce..05b0c89229da7edf783e40b7943270e3ad84c1ba 100644
--- a/Source/core/rendering/style/StyleRareNonInheritedData.h
+++ b/Source/core/rendering/style/StyleRareNonInheritedData.h
@@ -121,8 +121,8 @@ public:
 
     RefPtr<StyleReflection> m_boxReflect;
 
-    OwnPtr<CSSAnimationDataList> m_animations;
-    OwnPtr<CSSAnimationDataList> m_transitions;

[haraken, 2014/03/25 12:47:37]

At first I forgot to change this OwnPtr to OwnPtrWillBePersistent. However, it
didn't cause a compile error and I couldn't notice it until seeing some layout
tests failed.

C++ experts: What's the easiest way to cause a compile error when OwnPtr is used
for a GarbageCollected class?

+    OwnPtrWillBePersistent<CSSAnimationDataList> m_animations;
+    OwnPtrWillBePersistent<CSSAnimationDataList> m_transitions;
 
     FillLayer m_mask;
     NinePieceImage m_maskBoxImage;