Use Length for baselineShiftValue in SVGLayoutStyle

Source/core/layout/style/LayoutStyle.h

 /*
  * Copyright (C) 2000 Lars Knoll (knoll@kde.org)
  *           (C) 2000 Antti Koivisto (koivisto@kde.org)
  *           (C) 2000 Dirk Mueller (mueller@kde.org)
  * Copyright (C) 2003, 2005, 2006, 2007, 2008, 2009, 2010, 2011 Apple Inc. All rights reserved.
  * Copyright (C) 2006 Graham Dennis (graham.dennis@gmail.com)
  *
  * 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 1368 matching lines @@
     float floodOpacity() const { return svgStyle().floodOpacity(); }
     void setFloodOpacity(float f) { accessSVGStyle().setFloodOpacity(f); }
 
     float stopOpacity() const { return svgStyle().stopOpacity(); }
     void setStopOpacity(float f) { accessSVGStyle().setStopOpacity(f); }
 
     void setStopColor(const Color& c) { accessSVGStyle().setStopColor(c); }
     void setFloodColor(const Color& c) { accessSVGStyle().setFloodColor(c); }
     void setLightingColor(const Color& c) { accessSVGStyle().setLightingColor(c); }
 
-    SVGLength* baselineShiftValue() const { return svgStyle().baselineShiftValue(); }
-    void setBaselineShiftValue(PassRefPtrWillBeRawPtr<SVGLength> s) { accessSVGStyle().setBaselineShiftValue(s); }
+    const Length& baselineShiftValue() const { return svgStyle().baselineShiftValue(); }
+    void setBaselineShiftValue(const Length& s) { accessSVGStyle().setBaselineShiftValue(s); }
 
     void setShapeOutside(PassRefPtr<ShapeValue> value)
     {
         if (rareNonInheritedData->m_shapeOutside == value)
             return;
         rareNonInheritedData.access()->m_shapeOutside = value;
     }
     ShapeValue* shapeOutside() const { return rareNonInheritedData->m_shapeOutside.get(); }
 
     static ShapeValue* initialShapeOutside() { return 0; }
@@ skipping 454 matching lines @@
 }
 
 inline bool LayoutStyle::hasPseudoElementStyle() const
 {
     return noninherited_flags.pseudoBits & PSEUDO_ELEMENT_MASK;
 }
 
 } // namespace blink
 
 #endif // LayoutStyle_h