Reduce number of header includes in SVG

Source/core/svg/SVGPathParser.h

 /*
  * Copyright (C) 2002, 2003 The Karbon Developers
  * Copyright (C) 2006 Alexander Kellett <lypanov@kde.org>
  * Copyright (C) 2006, 2007 Rob Buis <buis@kde.org>
  * Copyright (C) 2007, 2009 Apple Inc. All rights reserved.
  * Copyright (C) Research In Motion Limited 2010. 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 SVGPathParser_h
 #define SVGPathParser_h
 
 #include "core/svg/SVGPathConsumer.h"
 #include "core/svg/SVGPathSeg.h"
-#include "core/svg/SVGPathSource.h"
 #include <wtf/PassOwnPtr.h>
 #include <wtf/text/WTFString.h>
 
 namespace WebCore {
 
+class SVGPathSource;
+
 class SVGPathParser {
     WTF_MAKE_NONCOPYABLE(SVGPathParser); WTF_MAKE_FAST_ALLOCATED;
 public:
     SVGPathParser();
 
     bool parsePathDataFromSource(PathParsingMode, bool checkForInitialMoveTo = true);
     void setCurrentConsumer(SVGPathConsumer* consumer) { m_consumer = consumer; }
     void setCurrentSource(SVGPathSource* source) { m_source = source; }
     void cleanup();
 
@@ skipping 17 matching lines @@
     SVGPathSegType m_lastCommand;
     bool m_closePath;
     FloatPoint m_controlPoint;
     FloatPoint m_currentPoint;
     FloatPoint m_subPathPoint;
 };
 
 } // namespace WebCore
 
 #endif // SVGPathParser_h