Merge 125343

Source/WebCore/rendering/RenderQuote.cpp

 /**
  * Copyright (C) 2011 Nokia Inc.  All rights reserved.
  * Copyright (C) 2012 Google 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,
@@ skipping 274 matching lines @@
         m_next = m_previous->m_next;
         m_previous->m_next = this;
         if (m_next)
             m_next->m_previous = this;
         break;
     }
 
     if (!m_previous) {
         m_next = view()->renderQuoteHead();
         view()->setRenderQuoteHead(this);
+        if (m_next)
+            m_next->m_previous = this;
     }
     m_attached = true;
 
     for (RenderQuote* quote = this; quote; quote = quote->m_next)
         quote->updateDepth();
 
     ASSERT(!m_next || m_next->m_attached);
+    ASSERT(!m_next || m_next->m_previous == this);
     ASSERT(!m_previous || m_previous->m_attached);
+    ASSERT(!m_previous || m_previous->m_next == this);
 }
 
 void RenderQuote::detachQuote()
 {
     ASSERT(!m_next || m_next->m_attached);
     ASSERT(!m_previous || m_previous->m_attached);
     if (!m_attached)
         return;
     if (m_previous)
         m_previous->m_next = m_next;
@@ skipping 32 matching lines @@
     }
     // FIXME: Don't call setNeedsLayout or dirty our preferred widths during layout.
     // This is likely to fail anyway as one of our ancestor will call setNeedsLayout(false),
     // preventing the future layout to occur on |this|. The solution is to move that to a
     // pre-layout phase.
     if (oldDepth != m_depth)
         setNeedsLayoutAndPrefWidthsRecalc();
 }
 
 } // namespace WebCore