blink: Cleanup core class forward declarations

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

 /*
  * Copyright (C) 2004, 2005, 2006, 2008 Nikolas Zimmermann <zimmermann@kde.org>
  * Copyright (C) 2004, 2005, 2006 Rob Buis <buis@kde.org>
  * Copyright (C) 2009, 2014 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 26 matching lines @@
 class CSSCursorImageValue;
 class Document;
 class SVGAnimatedPropertyBase;
 class SubtreeLayoutScope;
 class SVGAnimatedString;
 class SVGCursorElement;
 class SVGDocumentExtensions;
 class SVGElement;
 class SVGElementRareData;
 class SVGFitToViewBox;
-class SVGLength;
 class SVGPropertyBase;
 class SVGSVGElement;
 class SVGUseElement;
 
 typedef HeapHashSet<Member<SVGElement>> SVGElementSet;
 
 class CORE_EXPORT SVGElement : public Element {
   DEFINE_WRAPPERTYPEINFO();
 
  public:
@@ skipping 286 matching lines @@
   inline bool isElementOfType<const thisType>(const SVGElement& element) { \
     return is##thisType(element);                                          \
   }                                                                        \
   DEFINE_ELEMENT_TYPE_CASTS_WITH_FUNCTION(thisType)
 
 }  // namespace blink
 
 #include "core/SVGElementTypeHelpers.h"
 
 #endif  // SVGElement_h