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

Source/core/svg/SVGFEOffsetElement.h

 /*
  * Copyright (C) 2004, 2005, 2007 Nikolas Zimmermann <zimmermann@kde.org>
  * Copyright (C) 2004, 2005 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 15 matching lines @@
 #include "platform/graphics/filters/FEOffset.h"
 
 namespace WebCore {
 
 class SVGFEOffsetElement FINAL : public SVGFilterPrimitiveStandardAttributes {
 public:
     static PassRefPtr<SVGFEOffsetElement> create(Document&);
 
     SVGAnimatedNumber* dx() { return m_dx.get(); }
     SVGAnimatedNumber* dy() { return m_dy.get(); }
+    SVGAnimatedString* in1() { return m_in1.get(); }
 private:
     explicit SVGFEOffsetElement(Document&);
 
     bool isSupportedAttribute(const QualifiedName&);
     virtual void parseAttribute(const QualifiedName&, const AtomicString&) OVERRIDE;
     virtual void svgAttributeChanged(const QualifiedName&) OVERRIDE;
     virtual PassRefPtr<FilterEffect> build(SVGFilterBuilder*, Filter*) OVERRIDE;
 
     RefPtr<SVGAnimatedNumber> m_dx;
     RefPtr<SVGAnimatedNumber> m_dy;
+    RefPtr<SVGAnimatedString> m_in1;
     BEGIN_DECLARE_ANIMATED_PROPERTIES(SVGFEOffsetElement)
-        DECLARE_ANIMATED_STRING(In1, in1)
     END_DECLARE_ANIMATED_PROPERTIES
 };
 
 } // namespace WebCore
 
 #endif