Oilpan: move Node traversal objects to the heap.

Source/core/dom/Document.h

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2001 Dirk Mueller (mueller@kde.org)
  *           (C) 2006 Alexey Proskuryakov (ap@webkit.org)
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2012 Apple Inc. All rights reserved.
  * Copyright (C) 2008, 2009 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
  * Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies)
  * Copyright (C) 2011 Google Inc. All rights reserved.
  *
@@ skipping 460 matching lines @@
     FrameView* view() const; // can be null
     LocalFrame* frame() const { return m_frame; } // can be null
     FrameHost* frameHost() const; // can be null
     Page* page() const; // can be null
     Settings* settings() const; // can be null
 
     float devicePixelRatio() const;
 
     PassRefPtrWillBeRawPtr<Range> createRange();
 
-    PassRefPtr<NodeIterator> createNodeIterator(Node* root, ExceptionState&);
-    PassRefPtr<NodeIterator> createNodeIterator(Node* root, unsigned whatToShow, ExceptionState&);
-    PassRefPtr<NodeIterator> createNodeIterator(Node* root, unsigned whatToShow, PassRefPtr<NodeFilter>, ExceptionState&);
+    PassRefPtrWillBeRawPtr<NodeIterator> createNodeIterator(Node* root, ExceptionState&);
+    PassRefPtrWillBeRawPtr<NodeIterator> createNodeIterator(Node* root, unsigned whatToShow, ExceptionState&);
+    PassRefPtrWillBeRawPtr<NodeIterator> createNodeIterator(Node* root, unsigned whatToShow, PassRefPtrWillBeRawPtr<NodeFilter>, ExceptionState&);
 
-    PassRefPtr<TreeWalker> createTreeWalker(Node* root, ExceptionState&);
-    PassRefPtr<TreeWalker> createTreeWalker(Node* root, unsigned whatToShow, ExceptionState&);
-    PassRefPtr<TreeWalker> createTreeWalker(Node* root, unsigned whatToShow, PassRefPtr<NodeFilter>, ExceptionState&);
+    PassRefPtrWillBeRawPtr<TreeWalker> createTreeWalker(Node* root, ExceptionState&);
+    PassRefPtrWillBeRawPtr<TreeWalker> createTreeWalker(Node* root, unsigned whatToShow, ExceptionState&);
+    PassRefPtrWillBeRawPtr<TreeWalker> createTreeWalker(Node* root, unsigned whatToShow, PassRefPtrWillBeRawPtr<NodeFilter>, ExceptionState&);
 
     // Special support for editing
     PassRefPtrWillBeRawPtr<Text> createEditingTextNode(const String&);
 
     void setupFontBuilder(RenderStyle* documentStyle);
 
     void updateRenderTreeIfNeeded() { updateRenderTree(NoChange); }
     void updateRenderTreeForNodeIfNeeded(Node*);
     void updateLayout();
     enum RunPostLayoutTasks {
@@ skipping 736 matching lines @@
     RefPtrWillBeMember<Element> m_autofocusElement;
     RefPtrWillBeMember<Element> m_focusedElement;
     RefPtrWillBeMember<Node> m_hoverNode;
     RefPtrWillBeMember<Element> m_activeHoverElement;
     RefPtrWillBeMember<Element> m_documentElement;
     UserActionElementSet m_userActionElements;
 
     uint64_t m_domTreeVersion;
     static uint64_t s_globalTreeVersion;
 
-    HashSet<NodeIterator*> m_nodeIterators;
+    WillBeHeapHashSet<RawPtrWillBeWeakMember<NodeIterator> > m_nodeIterators;
     HashSet<Range*> m_ranges;
 
     unsigned short m_listenerTypes;
 
     MutationObserverOptions m_mutationObserverTypes;
 
     OwnPtrWillBeMember<StyleEngine> m_styleEngine;
     RefPtrWillBeMember<StyleSheetList> m_styleSheetList;
 
     OwnPtrWillBeMember<FormController> m_formController;
@@ skipping 199 matching lines @@
 inline bool Node::isDocumentNode() const
 {
     return this == document();
 }
 
 Node* eventTargetNodeForDocument(Document*);
 
 } // namespace WebCore
 
 #endif // Document_h