[Oilpan]: Move HTMLStackItem and friends to the oilpan heap.

Source/core/html/parser/HTMLStackItem.h

Index: Source/core/html/parser/HTMLStackItem.h
diff --git a/Source/core/html/parser/HTMLStackItem.h b/Source/core/html/parser/HTMLStackItem.h
index 038e7f0c7274e4164d8ef767179c1e9e1734b313..3b66cfdc3aacf4e777965fcb780a22c1445d2518 100644
--- a/Source/core/html/parser/HTMLStackItem.h
+++ b/Source/core/html/parser/HTMLStackItem.h
@@ -39,7 +39,7 @@ namespace WebCore {
 
 class ContainerNode;
 
-class HTMLStackItem : public RefCounted<HTMLStackItem> {
+class HTMLStackItem : public RefCountedWillBeGarbageCollectedFinalized<HTMLStackItem> {
 public:
     enum ItemType {
         ItemForContextElement,
@@ -47,15 +47,15 @@ public:
     };
 
     // Used by document fragment node and context element.
-    static PassRefPtr<HTMLStackItem> create(PassRefPtr<ContainerNode> node, ItemType type)
+    static PassRefPtrWillBeRawPtr<HTMLStackItem> create(PassRefPtrWillBeRawPtr<ContainerNode> node, ItemType type)
     {
-        return adoptRef(new HTMLStackItem(node, type));
+        return adoptRefWillBeNoop(new HTMLStackItem(node, type));
     }
 
     // Used by HTMLElementStack and HTMLFormattingElementList.
-    static PassRefPtr<HTMLStackItem> create(PassRefPtr<ContainerNode> node, AtomicHTMLToken* token, const AtomicString& namespaceURI = HTMLNames::xhtmlNamespaceURI)
+    static PassRefPtrWillBeRawPtr<HTMLStackItem> create(PassRefPtrWillBeRawPtr<ContainerNode> node, AtomicHTMLToken* token, const AtomicString& namespaceURI = HTMLNames::xhtmlNamespaceURI)
     {
-        return adoptRef(new HTMLStackItem(node, token, namespaceURI));
+        return adoptRefWillBeNoop(new HTMLStackItem(node, token, namespaceURI));
     }
 
     Element* element() const { return toElement(m_node.get()); }
@@ -207,8 +207,10 @@ public:
             || tagName == HTMLNames::xmpTag;
     }
 
+    void trace(Visitor* visitor) { visitor->trace(m_node); }
+
 private:
-    HTMLStackItem(PassRefPtr<ContainerNode> node, ItemType type)
+    HTMLStackItem(PassRefPtrWillBeRawPtr<ContainerNode> node, ItemType type)
         : m_node(node)
     {
         switch (type) {
@@ -223,7 +225,7 @@ private:
         }
     }
 
-    HTMLStackItem(PassRefPtr<ContainerNode> node, AtomicHTMLToken* token, const AtomicString& namespaceURI = HTMLNames::xhtmlNamespaceURI)
+    HTMLStackItem(PassRefPtrWillBeRawPtr<ContainerNode> node, AtomicHTMLToken* token, const AtomicString& namespaceURI = HTMLNames::xhtmlNamespaceURI)
         : m_node(node)
         , m_tokenLocalName(token->name())
         , m_tokenAttributes(token->attributes())
@@ -232,7 +234,7 @@ private:
     {
     }
 
-    RefPtr<ContainerNode> m_node;
+    RefPtrWillBeMember<ContainerNode> m_node;
 
     AtomicString m_tokenLocalName;
     Vector<Attribute> m_tokenAttributes;