Enable resize and layout for frames with RemoteFrame ancestors

Source/core/frame/Frame.cpp

 /*
  * Copyright (C) 1998, 1999 Torben Weis <weis@kde.org>
  *                     1999 Lars Knoll <knoll@kde.org>
  *                     1999 Antti Koivisto <koivisto@kde.org>
  *                     2000 Simon Hausmann <hausmann@kde.org>
  *                     2000 Stefan Schimanski <1Stein@gmx.de>
  *                     2001 George Staikos <staikos@kde.org>
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 Apple Inc. All rights reserved.
  * Copyright (C) 2005 Alexey Proskuryakov <ap@nypop.com>
  * Copyright (C) 2008 Nokia Corporation and/or its subsidiary(-ies)
@@ skipping 181 matching lines @@
 {
     m_host = 0;
 }
 
 bool Frame::isMainFrame() const
 {
     Page* page = this->page();
     return page && this == page->mainFrame();
 }
 
+bool Frame::isLocalRoot() const
+{
+    if (isRemoteFrame())
+        return false;
+
+    if (!tree().parent())
+        return true;
+
+    return tree().parent()->isRemoteFrame();
+}
+
 void Frame::disconnectOwnerElement()
 {
     if (m_owner) {
         if (m_owner->isLocal())
             toHTMLFrameOwnerElement(m_owner)->clearContentFrame();
         if (page())
             page()->decrementSubframeCount();
     }
     m_owner = 0;
 }
 
 HTMLFrameOwnerElement* Frame::deprecatedLocalOwner() const
 {
     return m_owner && m_owner->isLocal() ? toHTMLFrameOwnerElement(m_owner) : 0;
 }
 
 } // namespace WebCore