Merge 144713

Source/WebCore/css/CSSStyleSheet.h

 /*
  * (C) 1999-2003 Lars Knoll (knoll@kde.org)
  * Copyright (C) 2004, 2006, 2007, 2008, 2009, 2010, 2012 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,
@@ skipping 56 matching lines @@
     // IE Extensions
     PassRefPtr<CSSRuleList> rules();
     int addRule(const String& selector, const String& style, int index, ExceptionCode&);
     int addRule(const String& selector, const String& style, ExceptionCode&);
     void removeRule(unsigned index, ExceptionCode& ec) { deleteRule(index, ec); }
     
     // For CSSRuleList.
     unsigned length() const;
     CSSRule* item(unsigned index);
 
-    virtual void clearOwnerNode() OVERRIDE { m_ownerNode = 0; }
+    virtual void clearOwnerNode() OVERRIDE { didMutate(); m_ownerNode = 0; }
     virtual CSSImportRule* ownerRule() const OVERRIDE { return m_ownerRule; }
     virtual KURL baseURL() const OVERRIDE;
     virtual bool isLoading() const OVERRIDE;
     
     void clearOwnerRule() { m_ownerRule = 0; }
     Document* ownerDocument() const;
     MediaQuerySet* mediaQueries() const { return m_mediaQueries.get(); }
     void setMediaQueries(PassRefPtr<MediaQuerySet>);
     void setTitle(const String& title) { m_title = title; }
 
@@ skipping 58 matching lines @@
 
 inline CSSStyleSheet::RuleMutationScope::~RuleMutationScope()
 {
     if (m_styleSheet)
         m_styleSheet->didMutateRules();
 }
 
 } // namespace
 
 #endif