Revert of Consolidate implementation of ImageBitmapRenderingContext

third_party/WebKit/Source/modules/imagebitmap/ImageBitmapRenderingContext.h

 // Copyright 2016 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef ImageBitmapRenderingContext_h
 #define ImageBitmapRenderingContext_h
 
 #include "core/html/canvas/CanvasRenderingContext.h"
 #include "core/html/canvas/CanvasRenderingContextFactory.h"
 #include "modules/ModulesExport.h"
@@ skipping 17 matching lines @@
 
     CanvasRenderingContext* create(HTMLCanvasElement*,
                                    const CanvasContextCreationAttributes&,
                                    Document&) override;
     CanvasRenderingContext::ContextType getContextType() const override {
       return CanvasRenderingContext::ContextImageBitmap;
     }
   };
 
   // Script API
-  void transferFromImageBitmap(ImageBitmap*, ExceptionState&);
+  void transferFromImageBitmap(ImageBitmap*);
 
   // CanvasRenderingContext implementation
   ContextType getContextType() const override {
     return CanvasRenderingContext::ContextImageBitmap;
   }
   void setIsHidden(bool) override {}
   bool isContextLost() const override { return false; }
   bool paint(GraphicsContext&, const IntRect&) override;
   void setCanvasGetContextResult(RenderingContext&) final;
   PassRefPtr<Image> getImage(AccelerationHint, SnapshotReason) const final {
@@ skipping 23 matching lines @@
                   CanvasRenderingContext,
                   context,
                   context->getContextType() ==
                       CanvasRenderingContext::ContextImageBitmap,
                   context.getContextType() ==
                       CanvasRenderingContext::ContextImageBitmap);
 
 }  // blink
 
 #endif