Reduce number of header includes in SVG

Source/core/svg/SVGMPathElement.cpp

 /*
  * Copyright (C) 2007 Eric Seidel <eric@webkit.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,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  * Library General Public License for more details.
  *
  * You should have received a copy of the GNU Library General Public License
  * along with this library; see the file COPYING.LIB.  If not, write to
  * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  * Boston, MA 02110-1301, USA.
  */
 
 #include "config.h"
 
 #include "core/svg/SVGMPathElement.h"
 
 #include "SVGNames.h"
+#include "XLinkNames.h"
 #include "core/dom/Document.h"
 #include "core/svg/SVGAnimateMotionElement.h"
+#include "core/svg/SVGDocumentExtensions.h"
 #include "core/svg/SVGPathElement.h"
 
 namespace WebCore {
 
 // Animated property definitions
 DEFINE_ANIMATED_STRING(SVGMPathElement, XLinkNames::hrefAttr, Href, href)
 DEFINE_ANIMATED_BOOLEAN(SVGMPathElement, SVGNames::externalResourcesRequiredAttr, ExternalResourcesRequired, externalResourcesRequired)
 
 BEGIN_REGISTER_ANIMATED_PROPERTIES(SVGMPathElement)
     REGISTER_LOCAL_ANIMATED_PROPERTY(href)
@@ skipping 124 matching lines @@
     notifyParentOfPathChange(parentNode());
 }
 
 void SVGMPathElement::notifyParentOfPathChange(ContainerNode* parent)
 {
     if (parent && parent->hasTagName(SVGNames::animateMotionTag))
         static_cast<SVGAnimateMotionElement*>(parent)->updateAnimationPath();
 }
 
 } // namespace WebCore