Clean up after getPropertyCSSValue

Source/core/css/CSSComputedStyleDeclaration.cpp

 /*
  * Copyright (C) 2004 Zack Rusin <zack@kde.org>
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012 Apple Inc. All rights reserved.
  * Copyright (C) 2007 Alexey Proskuryakov <ap@webkit.org>
  * Copyright (C) 2007 Nicholas Shanks <webkit@nickshanks.com>
  * Copyright (C) 2011 Sencha, Inc. All rights reserved.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Lesser General Public
  * License as published by the Free Software Foundation; either
@@ skipping 2916 matching lines @@
             list.append(CSSProperty(properties[i], value.release(), false));
     }
     return MutableStylePropertySet::create(list.data(), list.size());
 }
 
 CSSRule* CSSComputedStyleDeclaration::parentRule() const
 {
     return 0;
 }
 
-PassRefPtrWillBeRawPtr<CSSValue> CSSComputedStyleDeclaration::getPropertyCSSValue(const String& propertyName)
-{
-    CSSPropertyID propertyID = cssPropertyID(propertyName);
-    if (!propertyID)
-        return nullptr;
-    RefPtrWillBeRawPtr<CSSValue> value = getPropertyCSSValue(propertyID);
-    return value ? value->cloneForCSSOM() : nullptr;
-}
-
 String CSSComputedStyleDeclaration::getPropertyValue(const String& propertyName)
 {
     CSSPropertyID propertyID = cssPropertyID(propertyName);
     if (!propertyID)
         return String();
     ASSERT(CSSPropertyMetadata::isEnabledProperty(propertyID));
     return getPropertyValue(propertyID);
 }
 
 String CSSComputedStyleDeclaration::getPropertyPriority(const String&)
@@ skipping 52 matching lines @@
     return list.release();
 }
 
 void CSSComputedStyleDeclaration::trace(Visitor* visitor)
 {
     visitor->trace(m_node);
     CSSStyleDeclaration::trace(visitor);
 }
 
 } // namespace blink