Prepare for remote->local frame swap

Source/core/frame/Frame.h

 /*
  * Copyright (C) 1998, 1999 Torben Weis <weis@kde.org>
  *                     1999-2001 Lars Knoll <knoll@kde.org>
  *                     1999-2001 Antti Koivisto <koivisto@kde.org>
  *                     2000-2001 Simon Hausmann <hausmann@kde.org>
  *                     2000-2001 Dirk Mueller <mueller@kde.org>
  *                     2000 Stefan Schimanski <1Stein@gmx.de>
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010 Apple Inc. All rights reserved.
  * Copyright (C) 2008 Nokia Corporation and/or its subsidiary(-ies)
  * Copyright (C) 2008 Eric Seidel <eric@webkit.org>
@@ skipping 59 matching lines @@
     // FrameHost should be used instead where possible.
     Page* page() const;
     FrameHost* host() const; // Null when the frame is detached.
 
     bool isMainFrame() const;
     bool isLocalRoot() const;
 
     virtual void disconnectOwnerElement();
 
     FrameOwner* owner() const;
+    void setOwner(FrameOwner* owner) { m_owner = owner; }
     HTMLFrameOwnerElement* deprecatedLocalOwner() const;
 
     // FIXME: LocalDOMWindow and Document should both be moved to LocalFrame
     // after RemoteFrame is complete enough to exist without them.
     virtual void setDOMWindow(PassRefPtrWillBeRawPtr<LocalDOMWindow>);
     LocalDOMWindow* domWindow() const;
 
     FrameTree& tree() const;
     ChromeClient& chromeClient() const;
 
@@ skipping 50 matching lines @@
 {
     return m_treeNode;
 }
 
 // Allow equality comparisons of Frames by reference or pointer, interchangeably.
 DEFINE_COMPARISON_OPERATORS_WITH_REFERENCES_REFCOUNTED(Frame)
 
 } // namespace blink
 
 #endif // Frame_h