Oilpan: Change references to MutableStylePropertySet to transition types.

Source/core/svg/SVGElementRareData.h

Index: Source/core/svg/SVGElementRareData.h
diff --git a/Source/core/svg/SVGElementRareData.h b/Source/core/svg/SVGElementRareData.h
index 91a69d938c546e7b605f79568fd1f6a07812d4fe..776af3c32da1306c0232c9e0a99c130539201b43 100644
--- a/Source/core/svg/SVGElementRareData.h
+++ b/Source/core/svg/SVGElementRareData.h
@@ -113,7 +113,7 @@ private:
     bool m_instancesUpdatesBlocked : 1;
     bool m_useOverrideComputedStyle : 1;
     bool m_needsOverrideComputedStyleUpdate : 1;
-    RefPtr<MutableStylePropertySet> m_animatedSMILStyleProperties;
+    RefPtrWillBePersistent<MutableStylePropertySet> m_animatedSMILStyleProperties;

[haraken, 2014/03/19 10:26:23]

I was surprised that you didn't hit COMPILE_ASSERT about the size increase of
the SVGElementRareData object. Looks like we don't have such ASSERT :)

[wibling-chromium, 2014/03/19 10:33:19]

I got lucky:)

     RefPtr<RenderStyle> m_overrideComputedStyle;
 };