| Index: Source/core/css/PropertySetCSSStyleDeclaration.h
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| diff --git a/Source/core/css/PropertySetCSSStyleDeclaration.h b/Source/core/css/PropertySetCSSStyleDeclaration.h
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| index 1a0d9c3ce3cb7623a4bd65debc573a392a1bafe9..dec4a4188a730a40f3f56de6bb8a72ef627ae52d 100644
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| --- a/Source/core/css/PropertySetCSSStyleDeclaration.h
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| +++ b/Source/core/css/PropertySetCSSStyleDeclaration.h
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| @@ -69,7 +69,7 @@ private:
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|      virtual void setPropertyInternal(CSSPropertyID, const String& value, bool important, ExceptionCode&) OVERRIDE;
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|      
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|      virtual bool cssPropertyMatches(CSSPropertyID, const CSSValue*) const OVERRIDE;
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| -    virtual PassRefPtr<StylePropertySet> copy() const OVERRIDE;
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| +    virtual PassRefPtr<MutableStylePropertySet> copyProperties() const OVERRIDE;
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|  
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|      CSSValue* cloneAndCacheForCSSOM(CSSValue*);
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|      
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| 
 |