Reduce number of header includes in SVG

Source/core/svg/SVGTransformable.h

 /*
  * Copyright (C) 2004, 2005, 2008 Nikolas Zimmermann <zimmermann@kde.org>
  * Copyright (C) 2004, 2005, 2006, 2007 Rob Buis <buis@kde.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.
  */
 
 #ifndef SVGTransformable_h
 #define SVGTransformable_h
 
 #include "core/svg/SVGLocatable.h"
 #include "core/svg/SVGTransform.h"
-#include "core/svg/SVGTransformList.h"
 #include <wtf/text/WTFString.h>
 
 namespace WebCore {
     
 class AffineTransform;
+class SVGTransformList;
 
 class SVGTransformable : virtual public SVGLocatable {
 public:
     enum TransformParsingMode {
         ClearList,
         DoNotClearList
     };
 
     virtual ~SVGTransformable();
 
     static bool parseTransformAttribute(SVGTransformList&, const LChar*& ptr, const LChar* end, TransformParsingMode = ClearList);
     static bool parseTransformAttribute(SVGTransformList&, const UChar*& ptr, const UChar* end, TransformParsingMode = ClearList);
 
     static bool parseTransformValue(unsigned type, const LChar*& ptr, const LChar* end, SVGTransform&);
     static bool parseTransformValue(unsigned type, const UChar*& ptr, const UChar* end, SVGTransform&);
 
     static SVGTransform::SVGTransformType parseTransformType(const String&);
 
     virtual AffineTransform localCoordinateSpaceTransform(SVGLocatable::CTMScope) const { return animatedLocalTransform(); }
     virtual AffineTransform animatedLocalTransform() const = 0;
 
 private:
     template<typename CharType>
     static bool parseTransformAttributeInternal(SVGTransformList&, const CharType*& ptr, const CharType* end, TransformParsingMode);
 };
 
 } // namespace WebCore
 
 #endif // SVGTransformable_h