Handle "url(...) none" and "url(...) currentColor" SVG paint specs

Source/core/svg/SVGPaint.h

 /*
  * Copyright (C) 2004, 2005 Nikolas Zimmermann <zimmermann@kde.org>
  * Copyright (C) 2004, 2005, 2006, 2007 Rob Buis <buis@kde.org>
  * Copyright (C) 2006 Samuel Weinig <sam.weinig@gmial.com>
  * Copyright (C) Research In Motion Limited 2011. 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.
@@ skipping 68 matching lines @@
         paint->setColor(color);
         return paint.release();
     }
 
     static PassRefPtr<SVGPaint> createURIAndNone(const String& uri)
     {
         RefPtr<SVGPaint> paint = adoptRef(new SVGPaint(SVG_PAINTTYPE_URI_NONE, uri));
         return paint.release();
     }
 
+    static PassRefPtr<SVGPaint> createURIAndCurrentColor(const String& uri)
+    {
+        RefPtr<SVGPaint> paint = adoptRef(new SVGPaint(SVG_PAINTTYPE_URI_CURRENTCOLOR, uri));
+        return paint.release();
+    }
+
     const SVGPaintType& paintType() const { return m_paintType; }
     String uri() const { return m_uri; }
 
     void setUri(const String&);
     void setPaint(unsigned short paintType, const String& uri, const String& rgbColor, const String& iccColor, ExceptionState&);
 
     String customCSSText() const;
 
     PassRefPtr<SVGPaint> cloneForCSSOM() const;
 
@@ skipping 15 matching lines @@
 
     SVGPaintType m_paintType;
     String m_uri;
 };
 
 DEFINE_CSS_VALUE_TYPE_CASTS(SVGPaint, isSVGPaint());
 
 } // namespace WebCore
 
 #endif // SVGPaint_h