Reduce number of header includes in SVG

Source/core/svg/SVGPathUtilities.h

 /*
  * Copyright (C) Research In Motion Limited 2010, 2012. All rights reserved.
  *
  * 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.
  */
 
 #ifndef SVGPathUtilities_h
 #define SVGPathUtilities_h
 
-#include "core/svg/SVGPathByteStream.h"
 #include "core/svg/SVGPathConsumer.h"
-#include "core/svg/SVGPathSeg.h"
 #include <wtf/OwnPtr.h>
 #include <wtf/text/WTFString.h>
 
 namespace WebCore {
 
 class Path;
 class SVGPathByteStream;
 class SVGPathElement;
+class SVGPathSeg;
 class SVGPathSegList;
 
 // String/SVGPathByteStream -> Path
 bool buildPathFromString(const String&, Path&);
 bool buildPathFromByteStream(SVGPathByteStream*, Path&);
 
 // SVGPathSegList/String -> SVGPathByteStream
 bool buildSVGPathByteStreamFromSVGPathSegList(const SVGPathSegList&, SVGPathByteStream*, PathParsingMode);
 bool appendSVGPathByteStreamFromSVGPathSeg(PassRefPtr<SVGPathSeg>, SVGPathByteStream*, PathParsingMode);
 bool buildSVGPathByteStreamFromString(const String&, SVGPathByteStream*, PathParsingMode);
 
 // SVGPathByteStream/SVGPathSegList -> String
 bool buildStringFromByteStream(SVGPathByteStream*, String&, PathParsingMode);
 bool buildStringFromSVGPathSegList(const SVGPathSegList&, String&, PathParsingMode);
 
 // SVGPathByteStream -> SVGPathSegList
 bool buildSVGPathSegListFromByteStream(SVGPathByteStream*, SVGPathElement*, SVGPathSegList&, PathParsingMode);
 
 bool buildAnimatedSVGPathByteStream(SVGPathByteStream*, SVGPathByteStream*, SVGPathByteStream*, float);
 bool addToSVGPathByteStream(SVGPathByteStream*, SVGPathByteStream*, unsigned repeatCount = 1);
 
 bool getSVGPathSegAtLengthFromSVGPathByteStream(SVGPathByteStream*, float length, unsigned& pathSeg);
 bool getTotalLengthOfSVGPathByteStream(SVGPathByteStream*, float& totalLength);
 bool getPointAtLengthOfSVGPathByteStream(SVGPathByteStream*, float length, FloatPoint&);
 
 } // namespace WebCore
 
 #endif // SVGPathUtilities_h