Reduce forward declarations in core/rendering

Source/core/rendering/svg/SVGRenderTreeAsText.h

 /*
  * Copyright (C) 2004, 2005, 2009 Apple Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 13 matching lines @@
  */
 
 #ifndef SVGRenderTreeAsText_h
 #define SVGRenderTreeAsText_h
 
 #include "platform/text/TextStream.h"
 
 namespace WebCore {
 
 class Color;
-class FloatRect;
-class FloatSize;
-class Node;
-class RenderImage;
 class RenderObject;
 class RenderSVGGradientStop;
 class RenderSVGImage;
 class RenderSVGInlineText;
 class RenderSVGShape;
 class RenderSVGRoot;
 class RenderSVGText;
 class AffineTransform;
-class SVGUnitTypes;
 
 // functions used by the main RenderTreeAsText code
 void write(TextStream&, const RenderSVGShape&, int indent);
 void write(TextStream&, const RenderSVGRoot&, int indent);
 void writeSVGGradientStop(TextStream&, const RenderSVGGradientStop&, int indent);
 void writeSVGResourceContainer(TextStream&, const RenderObject&, int indent);
 void writeSVGContainer(TextStream&, const RenderObject&, int indent);
 void writeSVGImage(TextStream&, const RenderSVGImage&, int indent);
 void writeSVGInlineText(TextStream&, const RenderSVGInlineText&, int indent);
 void writeSVGText(TextStream&, const RenderSVGText&, int indent);
@@ skipping 24 matching lines @@
 template<typename Pointer>
 TextStream& operator<<(TextStream& ts, Pointer* t)
 {
     ts << reinterpret_cast<intptr_t>(t);
     return ts;
 }
 
 } // namespace WebCore
 
 #endif // SVGRenderTreeAsText_h