Reduce forward declarations in core/svg

Source/core/svg/SVGFontFaceElement.h

 /*
  * Copyright (C) 2007 Eric Seidel <eric@webkit.org>
  * Copyright (C) 2007 Nikolas Zimmermann <zimmermann@kde.org>
  * Copyright (C) 2008 Apple Inc. 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.
  *
@@ skipping 12 matching lines @@
 #define SVGFontFaceElement_h
 
 #if ENABLE(SVG_FONTS)
 #include "core/SVGNames.h"
 #include "core/svg/SVGElement.h"
 #include "wtf/WeakPtr.h"
 
 namespace WebCore {
 
 class SVGFontElement;
-class SVGFontData;
 class StyleRuleFontFace;
 
 class SVGFontFaceElement FINAL : public SVGElement {
 public:
     DECLARE_NODE_FACTORY(SVGFontFaceElement);
 
     unsigned unitsPerEm() const;
     int xHeight() const;
     float horizontalOriginX() const;
     float horizontalOriginY() const;
@@ skipping 28 matching lines @@
     RawPtrWillBeMember<SVGFontElement> m_fontElement;
     WeakPtrFactory<SVGFontFaceElement> m_weakFactory;
 };
 
 } // namespace WebCore
 
 #endif // ENABLE(SVG_FONTS)
 #endif
 
 // vim:ts=4:noet