[SVG] SVGAnimatedString{,List} migration to new SVG property impl.

Source/core/svg/SVGLinearGradientElement.cpp

 /*
  * Copyright (C) 2004, 2005, 2006, 2008 Nikolas Zimmermann <zimmermann@kde.org>
  * Copyright (C) 2004, 2005, 2006, 2007 Rob Buis <buis@kde.org>
  * Copyright (C) 2008 Eric Seidel <eric@webkit.org>
  * Copyright (C) 2008 Dirk Schulze <krit@webkit.org>
  * Copyright (C) Research In Motion Limited 2010. 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
@@ skipping 147 matching lines @@
         return false;
 
     HashSet<SVGGradientElement*> processedGradients;
     SVGGradientElement* current = this;
 
     setGradientAttributes(current, attributes);
     processedGradients.add(current);
 
     while (true) {
         // Respect xlink:href, take attributes from referenced element
-        Node* refNode = SVGURIReference::targetElementFromIRIString(current->hrefCurrentValue(), document());
+        Node* refNode = SVGURIReference::targetElementFromIRIString(current->href()->currentValue()->value(), document());
         if (refNode && isSVGGradientElement(*refNode)) {
             current = toSVGGradientElement(refNode);
 
             // Cycle detection
             if (processedGradients.contains(current))
                 return true;
 
             if (!current->renderer())
                 return false;
 
@@ skipping 10 matching lines @@
 
 bool SVGLinearGradientElement::selfHasRelativeLengths() const
 {
     return m_x1->currentValue()->isRelative()
         || m_y1->currentValue()->isRelative()
         || m_x2->currentValue()->isRelative()
         || m_y2->currentValue()->isRelative();
 }
 
 }