Add support for DocumentFragment.getElementById()

Source/core/svg/SVGSVGElement.h

 /*
  * Copyright (C) 2004, 2005, 2006 Nikolas Zimmermann <zimmermann@kde.org>
  * Copyright (C) 2004, 2005, 2006, 2007, 2010 Rob Buis <buis@kde.org>
  * Copyright (C) 2014 Google, Inc.
  *
  * 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 90 matching lines @@
     static PassRefPtr<SVGPointTearOff> createSVGPoint();
     static PassRefPtr<SVGMatrixTearOff> createSVGMatrix();
     static PassRefPtr<SVGRectTearOff> createSVGRect();
     static PassRefPtr<SVGTransformTearOff> createSVGTransform();
     static PassRefPtr<SVGTransformTearOff> createSVGTransformFromMatrix(PassRefPtr<SVGMatrixTearOff>);
 
     AffineTransform viewBoxToViewTransform(float viewWidth, float viewHeight) const;
 
     void setupInitialView(const String& fragmentIdentifier, Element* anchorNode);
 
-    Element* getElementById(const AtomicString&) const;
-
     bool hasIntrinsicWidth() const;
     bool hasIntrinsicHeight() const;
 
     SVGAnimatedLength* x() const { return m_x.get(); }
     SVGAnimatedLength* y() const { return m_y.get(); }
     SVGAnimatedLength* width() const { return m_width.get(); }
     SVGAnimatedLength* height() const { return m_height.get(); }
 
 private:
     explicit SVGSVGElement(Document&);
@@ skipping 36 matching lines @@
     RefPtr<SMILTimeContainer> m_timeContainer;
     RefPtr<SVGPoint> m_translation;
     RefPtr<SVGViewSpec> m_viewSpec;
 
     friend class SVGCurrentTranslateTearOff;
 };
 
 } // namespace WebCore
 
 #endif