| Index: Source/WebCore/css/CSSStyleSheet.h | 
| =================================================================== | 
| --- Source/WebCore/css/CSSStyleSheet.h	(revision 145469) | 
| +++ Source/WebCore/css/CSSStyleSheet.h	(working copy) | 
| @@ -74,7 +74,7 @@ | 
| 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; | 
|  |