Oilpan: move node/element rare data objects to the heap.

Source/core/dom/ElementRareData.h

Index: Source/core/dom/ElementRareData.h
diff --git a/Source/core/dom/ElementRareData.h b/Source/core/dom/ElementRareData.h
index 631fc87e185c37584335185b1651808006ec640b..c1833a3c81ddfbc5e67980b963274d79b158fffd 100644
--- a/Source/core/dom/ElementRareData.h
+++ b/Source/core/dom/ElementRareData.h
@@ -32,6 +32,7 @@
 #include "core/html/ClassList.h"
 #include "core/html/ime/InputMethodContext.h"
 #include "core/rendering/style/StyleInheritedData.h"
+#include "platform/heap/Handle.h"
 #include "wtf/OwnPtr.h"
 
 namespace WebCore {
@@ -40,9 +41,9 @@ class HTMLElement;
 
 class ElementRareData : public NodeRareData {
 public:
-    static PassOwnPtr<ElementRareData> create(RenderObject* renderer)
+    static PassOwnPtrWillBeRawPtr<ElementRareData> create(RenderObject* renderer)
     {
-        return adoptPtr(new ElementRareData(renderer));
+        return adoptPtrWillBeNoop(new ElementRareData(renderer));
     }
 
     ~ElementRareData();
@@ -122,6 +123,8 @@ public:
     void setCustomElementDefinition(PassRefPtr<CustomElementDefinition> definition) { m_customElementDefinition = definition; }
     CustomElementDefinition* customElementDefinition() const { return m_customElementDefinition.get(); }
 
+    void traceAfterDispatch(Visitor*);
+
 private:
     short m_tabindex;
 
@@ -133,7 +136,7 @@ private:
     OwnPtr<ElementShadow> m_shadow;
     OwnPtr<NamedNodeMap> m_attributeMap;
     OwnPtr<InputMethodContext> m_inputMethodContext;
-    OwnPtrWillBePersistent<ActiveAnimations> m_activeAnimations;
+    OwnPtrWillBeMember<ActiveAnimations> m_activeAnimations;
     OwnPtr<InlineCSSStyleDeclaration> m_cssomWrapper;
 
     RefPtr<RenderStyle> m_computedStyle;
@@ -156,11 +159,14 @@ inline ElementRareData::ElementRareData(RenderObject* renderer)
     , m_tabindex(0)
     , m_minimumSizeForResizing(defaultMinimumSizeForResizing())
 {
+    m_isElementRareData = true;
 }
 
 inline ElementRareData::~ElementRareData()
 {
+#if !ENABLE(OILPAN)
     ASSERT(!m_shadow);
+#endif
     ASSERT(!m_generatedBefore);
     ASSERT(!m_generatedAfter);
     ASSERT(!m_backdrop);