Remove custom style building functions for 'clip'.

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 2511 matching lines @@
             return cssValuePool().createValue(style->userSelect());
         case CSSPropertyBorderBottomLeftRadius:
             return valueForBorderRadiusCorner(style->borderBottomLeftRadius(), *style);
         case CSSPropertyBorderBottomRightRadius:
             return valueForBorderRadiusCorner(style->borderBottomRightRadius(), *style);
         case CSSPropertyBorderTopLeftRadius:
             return valueForBorderRadiusCorner(style->borderTopLeftRadius(), *style);
         case CSSPropertyBorderTopRightRadius:
             return valueForBorderRadiusCorner(style->borderTopRightRadius(), *style);
         case CSSPropertyClip: {
-            if (!style->hasClip())
+            if (style->hasAutoClip())
                 return cssValuePool().createIdentifierValue(CSSValueAuto);
             RefPtrWillBeRawPtr<Rect> rect = Rect::create();
             rect->setTop(zoomAdjustedPixelValue(style->clip().top().value(), *style));
             rect->setRight(zoomAdjustedPixelValue(style->clip().right().value(), *style));
             rect->setBottom(zoomAdjustedPixelValue(style->clip().bottom().value(), *style));
             rect->setLeft(zoomAdjustedPixelValue(style->clip().left().value(), *style));
             return cssValuePool().createValue(rect.release());
         }
         case CSSPropertySpeak:
             return cssValuePool().createValue(style->speak());
@@ skipping 465 matching lines @@
     return list.release();
 }
 
 void CSSComputedStyleDeclaration::trace(Visitor* visitor)
 {
     visitor->trace(m_node);
     CSSStyleDeclaration::trace(visitor);
 }
 
 } // namespace blink