Add support for DocumentFragment.getElementById()

Source/core/svg/SVGSVGElement.cpp

 /*
  * Copyright (C) 2004, 2005, 2006 Nikolas Zimmermann <zimmermann@kde.org>
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2010 Rob Buis <buis@kde.org>
  * Copyright (C) 2007 Apple Inc. All rights reserved.
  * 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 751 matching lines @@
         view->preserveAspectRatio()->baseValue()->setAlign(preserveAspectRatio()->currentValue()->align());
         view->preserveAspectRatio()->baseValue()->setMeetOrSlice(preserveAspectRatio()->currentValue()->meetOrSlice());
     }
 
     if (viewElement->hasAttribute(SVGNames::zoomAndPanAttr))
         view->setZoomAndPan(viewElement->zoomAndPan());
     else
         view->setZoomAndPan(zoomAndPan());
 }
 
-// getElementById on SVGSVGElement is restricted to only the child subtree defined by the <svg> element.
-// See http://www.w3.org/TR/SVG11/struct.html#InterfaceSVGSVGElement
-Element* SVGSVGElement::getElementById(const AtomicString& id) const
-{
-    Element* element = treeScope().getElementById(id);
-    if (element && element->isDescendantOf(this))
-        return element;
-
-    // Fall back to traversing our subtree. Duplicate ids are allowed, the first found will
-    // be returned.
-    for (Element* element = ElementTraversal::firstWithin(*this); element; element = ElementTraversal::next(*element, this)) {
-        if (element->getIdAttribute() == id)
-            return element;
-    }
-    return 0;
 }
-
-}