Move Frame to the Oilpan heap.

Source/core/html/HTMLFrameOwnerElement.h

 /*
  * Copyright (C) 2006, 2007, 2009 Apple Inc. All rights reserved.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
  * version 2 of the License, or (at your option) any later version.
  *
  * This library is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
@@ skipping 19 matching lines @@
 
 namespace blink {
 
 class LocalDOMWindow;
 class ExceptionState;
 class Frame;
 class RenderPart;
 class Widget;
 
 class HTMLFrameOwnerElement : public HTMLElement, public FrameOwner {
+    WILL_BE_USING_GARBAGE_COLLECTED_MIXIN(HTMLFrameOwnerElement);
 public:
     virtual ~HTMLFrameOwnerElement();
 
     Frame* contentFrame() const { return m_contentFrame; }
     LocalDOMWindow* contentWindow() const;
     Document* contentDocument() const;
 
     void setContentFrame(Frame&);
     void clearContentFrame();
 
@@ skipping 19 matching lines @@
 
     class UpdateSuspendScope {
     public:
         UpdateSuspendScope();
         ~UpdateSuspendScope();
 
     private:
         void performDeferredWidgetTreeOperations();
     };
 
+    virtual void trace(Visitor*) OVERRIDE;
+
 protected:
     HTMLFrameOwnerElement(const QualifiedName& tagName, Document&);
     void setSandboxFlags(SandboxFlags);
 
     bool loadOrRedirectSubframe(const KURL&, const AtomicString& frameName, bool lockBackForwardList);
 
 private:
     virtual bool isKeyboardFocusable() const OVERRIDE;
     virtual bool isFrameOwnerElement() const OVERRIDE FINAL { return true; }
 
     // FrameOwner overrides:
     virtual bool isLocal() const { return true; }
     virtual SandboxFlags sandboxFlags() const OVERRIDE { return m_sandboxFlags; }
     virtual void dispatchLoad() OVERRIDE;
 
-    Frame* m_contentFrame;
+    RawPtrWillBeMember<Frame> m_contentFrame;
     RefPtr<Widget> m_widget;
     SandboxFlags m_sandboxFlags;
 };
 
 DEFINE_ELEMENT_TYPE_CASTS(HTMLFrameOwnerElement, isFrameOwnerElement());
 
 class SubframeLoadingDisabler {
     STACK_ALLOCATED();
 public:
     explicit SubframeLoadingDisabler(Node& root)
@@ skipping 22 matching lines @@
     static WillBeHeapHashCountedSet<RawPtrWillBeMember<Node> >& disabledSubtreeRoots();
 
     RawPtrWillBeMember<Node> m_root;
 };
 
 DEFINE_TYPE_CASTS(HTMLFrameOwnerElement, FrameOwner, owner, owner->isLocal(), owner.isLocal());
 
 } // namespace blink
 
 #endif // HTMLFrameOwnerElement_h