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

Source/core/svg/SVGLineElement.h

 /*
  * Copyright (C) 2004, 2005, 2006, 2008 Nikolas Zimmermann <zimmermann@kde.org>
  * Copyright (C) 2004, 2005, 2006 Rob Buis <buis@kde.org>
  *
  * 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.
  *
  * This library is distributed in the hope that it will be useful,
@@ skipping 14 matching lines @@
 #include "core/svg/SVGAnimatedBoolean.h"
 #include "core/svg/SVGAnimatedLength.h"
 #include "core/svg/SVGGeometryElement.h"
 
 namespace WebCore {
 
 class SVGLineElement FINAL : public SVGGeometryElement {
 public:
     static PassRefPtr<SVGLineElement> create(Document&);
 
+    SVGAnimatedLength* x1() const { return m_x1.get(); }
+    SVGAnimatedLength* y1() const { return m_y1.get(); }
+    SVGAnimatedLength* x2() const { return m_x2.get(); }
+    SVGAnimatedLength* y2() const { return m_y2.get(); }
+
 private:
     explicit SVGLineElement(Document&);
 
     virtual bool isValid() const { return SVGTests::isValid(); }
     virtual bool supportsFocus() const OVERRIDE { return hasFocusEventListeners(); }
 
     bool isSupportedAttribute(const QualifiedName&);
     virtual void parseAttribute(const QualifiedName&, const AtomicString&) OVERRIDE;
     virtual void svgAttributeChanged(const QualifiedName&);
 
     virtual bool supportsMarkers() const { return true; }
 
     virtual bool selfHasRelativeLengths() const;
 
+    RefPtr<SVGAnimatedLength> m_x1;
+    RefPtr<SVGAnimatedLength> m_y1;
+    RefPtr<SVGAnimatedLength> m_x2;
+    RefPtr<SVGAnimatedLength> m_y2;
     BEGIN_DECLARE_ANIMATED_PROPERTIES(SVGLineElement)
-        DECLARE_ANIMATED_LENGTH(X1, x1)
-        DECLARE_ANIMATED_LENGTH(Y1, y1)
-        DECLARE_ANIMATED_LENGTH(X2, x2)
-        DECLARE_ANIMATED_LENGTH(Y2, y2)
     END_DECLARE_ANIMATED_PROPERTIES
 };
 
 DEFINE_NODE_TYPE_CASTS(SVGLineElement, hasTagName(SVGNames::lineTag));
 
 } // namespace WebCore
 
 #endif