blink: Cleanup class forward declarations

third_party/WebKit/Source/modules/canvas2d/CanvasRenderingContext2D.h

 /*
  * Copyright (C) 2006, 2007, 2009, 2010, 2011, 2012 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
@@ skipping 33 matching lines @@
 
 namespace blink {
 class WebLayer;
 }
 
 namespace blink {
 
 class CanvasImageSource;
 class Element;
 class ExceptionState;
-class FloatRect;
-class FloatSize;
 class Font;
 class FontMetrics;
 class HitRegion;
 class HitRegionOptions;
 class HitRegionManager;
 class HitTestCanvasResult;
 class Path2D;
-class SVGMatrixTearOff;
 class TextMetrics;
 
 typedef CSSImageValueOrHTMLImageElementOrHTMLVideoElementOrHTMLCanvasElementOrImageBitmapOrOffscreenCanvas
     CanvasImageSourceUnion;
 
 class MODULES_EXPORT CanvasRenderingContext2D final
     : public CanvasRenderingContext,
       public BaseRenderingContext2D,
       public WebThread::TaskObserver,
       public SVGResourceClient {
@@ skipping 183 matching lines @@
 
 DEFINE_TYPE_CASTS(CanvasRenderingContext2D,
                   CanvasRenderingContext,
                   context,
                   context->is2d() && context->canvas(),
                   context.is2d() && context.canvas());
 
 }  // namespace blink
 
 #endif  // CanvasRenderingContext2D_h