blink: Cleanup class/struct forward declarations

third_party/WebKit/Source/core/svg/SVGPathBlender.h

 /*
  * 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 SVGPathBlender_h
 #define SVGPathBlender_h
 
 #include "platform/heap/Handle.h"
 #include "wtf/Noncopyable.h"
 
 namespace blink {
 
-struct PathSegmentData;
 class SVGPathConsumer;
 class SVGPathByteStreamSource;
 
 class SVGPathBlender final {
   WTF_MAKE_NONCOPYABLE(SVGPathBlender);
   STACK_ALLOCATED();
 
  public:
   SVGPathBlender(SVGPathByteStreamSource* fromSource,
                  SVGPathByteStreamSource* toSource,
                  SVGPathConsumer*);
 
   bool addAnimatedPath(unsigned repeatCount);
   bool blendAnimatedPath(float);
 
  private:
   class BlendState;
   bool blendAnimatedPath(BlendState&);
 
   SVGPathByteStreamSource* m_fromSource;
   SVGPathByteStreamSource* m_toSource;
   SVGPathConsumer* m_consumer;
 };
 
 }  // namespace blink
 
 #endif  // SVGPathBlender_h