Streamline the presentation of ImageBitmapRenderingContext

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 215 matching lines @@
 
   void drawFocusIfNeededInternal(const Path&, Element*);
   bool focusRingCallIsValid(const Path&, Element*);
   void drawFocusRing(const Path&);
   void updateElementAccessibility(const Path&, Element*);
 
   CanvasRenderingContext::ContextType getContextType() const override {
     return CanvasRenderingContext::Context2d;
   }
   bool is2d() const override { return true; }
+  bool isComposited() const override;
   bool isAccelerated() const override;
   bool hasAlpha() const override { return creationAttributes().alpha(); }
   void setIsHidden(bool) override;
   void stop() final;
   DECLARE_VIRTUAL_TRACE();
 
   virtual bool isTransformInvertible() const;
 
   WebLayer* platformLayer() const override;
 
@@ skipping 13 matching lines @@
 
 DEFINE_TYPE_CASTS(CanvasRenderingContext2D,
                   CanvasRenderingContext,
                   context,
                   context->is2d() && context->canvas(),
                   context.is2d() && context.canvas());
 
 }  // namespace blink
 
 #endif  // CanvasRenderingContext2D_h