Minor clean up in transferToImageBitmap API

third_party/WebKit/Source/modules/webgl/WebGLRenderingContext.cpp

 /*
  * Copyright (C) 2009 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
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 145 matching lines @@
 void WebGLRenderingContext::setCanvasGetContextResult(
     RenderingContext& result) {
   result.setWebGLRenderingContext(this);
 }
 
 void WebGLRenderingContext::setOffscreenCanvasGetContextResult(
     OffscreenRenderingContext& result) {
   result.setWebGLRenderingContext(this);
 }
 
-ImageBitmap* WebGLRenderingContext::transferToImageBitmap(
-    ExceptionState& exceptionState) {
+ImageBitmap* WebGLRenderingContext::transferToImageBitmap() {
   return transferToImageBitmapBase();
 }
 
 void WebGLRenderingContext::registerContextExtensions() {
   // Register extensions.
   static const char* const bothPrefixes[] = {
       "", "WEBKIT_", 0,
   };
 
   registerExtension<ANGLEInstancedArrays>(m_angleInstancedArrays);
@@ skipping 87 matching lines @@
   visitor->traceWrappers(m_webglCompressedTextureETC);
   visitor->traceWrappers(m_webglCompressedTextureETC1);
   visitor->traceWrappers(m_webglCompressedTexturePVRTC);
   visitor->traceWrappers(m_webglCompressedTextureS3TC);
   visitor->traceWrappers(m_webglCompressedTextureS3TCsRGB);
   visitor->traceWrappers(m_webglDepthTexture);
   WebGLRenderingContextBase::traceWrappers(visitor);
 }
 
 }  // namespace blink