Oilpan: move DOM string collection objects to the Oilpan 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 5f692a8743b1a370c00a7a8b07ad0a1bd228a6c4..67d8e0f87ab7b6febf5dd10d36b080a1be8cc387 100644
--- a/Source/core/dom/ElementRareData.h
+++ b/Source/core/dom/ElementRareData.h
@@ -79,14 +79,14 @@ public:
     }
 
     NamedNodeMap* attributeMap() const { return m_attributeMap.get(); }
-    void setAttributeMap(PassOwnPtr<NamedNodeMap> attributeMap) { m_attributeMap = attributeMap; }
+    void setAttributeMap(PassOwnPtrWillBeRawPtr<NamedNodeMap> attributeMap) { m_attributeMap = attributeMap; }
 
     RenderStyle* computedStyle() const { return m_computedStyle.get(); }
     void setComputedStyle(PassRefPtr<RenderStyle> computedStyle) { m_computedStyle = computedStyle; }
     void clearComputedStyle() { m_computedStyle = nullptr; }
 
     ClassList* classList() const { return m_classList.get(); }
-    void setClassList(PassOwnPtr<ClassList> classList) { m_classList = classList; }
+    void setClassList(PassOwnPtrWillBeRawPtr<ClassList> classList) { m_classList = classList; }
     void clearClassListValueForQuirksMode()
     {
         if (!m_classList)
@@ -95,7 +95,7 @@ public:
     }
 
     DatasetDOMStringMap* dataset() const { return m_dataset.get(); }
-    void setDataset(PassOwnPtr<DatasetDOMStringMap> dataset) { m_dataset = dataset; }
+    void setDataset(PassOwnPtrWillBeRawPtr<DatasetDOMStringMap> dataset) { m_dataset = dataset; }
 
     IntSize savedLayerScrollOffset() const { return m_savedLayerScrollOffset; }
     void setSavedLayerScrollOffset(IntSize size) { m_savedLayerScrollOffset = size; }
@@ -127,10 +127,10 @@ private:
 
     IntSize m_savedLayerScrollOffset;
 
-    OwnPtr<DatasetDOMStringMap> m_dataset;
-    OwnPtr<ClassList> m_classList;
+    OwnPtrWillBeMember<DatasetDOMStringMap> m_dataset;
+    OwnPtrWillBeMember<ClassList> m_classList;
     OwnPtrWillBeMember<ElementShadow> m_shadow;
-    OwnPtr<NamedNodeMap> m_attributeMap;
+    OwnPtrWillBeMember<NamedNodeMap> m_attributeMap;
     OwnPtr<InputMethodContext> m_inputMethodContext;
     OwnPtrWillBeMember<ActiveAnimations> m_activeAnimations;
     OwnPtrWillBeMember<InlineCSSStyleDeclaration> m_cssomWrapper;