[WIP] Move layout states into the DocumentLifecycle state machine

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_view->prepareForDetach();
 
     // Prepare for destruction now, so any unload event handlers get run and the DOMWindow is
     // notified. If we wait until the view is destroyed, then things won't be hooked up enough for
     // these calls to work.
     if (!view && document() && document()->isActive()) {
         // FIXME: We don't call willRemove here. Why is that OK?
         document()->prepareForDestruction();
     }
 
-    if (m_view)
-        m_view->unscheduleRelayout();
-
     eventHandler().clear();
 
     m_view = view;
 
     if (m_view && isMainFrame())
         m_view->setVisibleContentScaleFactor(page()->pageScaleFactor());
 }
 
 void Frame::sendOrientationChangeEvent(int orientation)
 {
@@ skipping 523 matching lines @@
 {
     if (!m_host)
         return 0;
 
     double ratio = m_host->deviceScaleFactor();
     ratio *= pageZoomFactor();
     return ratio;
 }
 
 } // namespace WebCore