Minor clean up in transferToImageBitmap API

third_party/WebKit/Source/modules/webgl/WebGL2RenderingContext.cpp

 // Copyright 2015 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.
 
 #include "modules/webgl/WebGL2RenderingContext.h"
 
 #include "bindings/modules/v8/OffscreenCanvasRenderingContext2DOrWebGLRenderingContextOrWebGL2RenderingContext.h"
 #include "bindings/modules/v8/RenderingContext.h"
 #include "core/frame/LocalFrame.h"
 #include "core/frame/Settings.h"
@@ skipping 84 matching lines @@
 void WebGL2RenderingContext::setCanvasGetContextResult(
     RenderingContext& result) {
   result.setWebGL2RenderingContext(this);
 }
 
 void WebGL2RenderingContext::setOffscreenCanvasGetContextResult(
     OffscreenRenderingContext& result) {
   result.setWebGL2RenderingContext(this);
 }
 
-ImageBitmap* WebGL2RenderingContext::transferToImageBitmap(
-    ExceptionState& exceptionState) {
+ImageBitmap* WebGL2RenderingContext::transferToImageBitmap() {
   NOTIMPLEMENTED();
   return nullptr;
 }
 
 void WebGL2RenderingContext::registerContextExtensions() {
   // TODO(kainino): add DraftExtension flag to some of these before WebGL 2
   // is rolled out.
   // https://bugs.chromium.org/p/chromium/issues/detail?id=647892
 
   // Register extensions.
@@ skipping 44 matching lines @@
   visitor->traceWrappers(m_webglCompressedTexturePVRTC);
   visitor->traceWrappers(m_webglCompressedTextureS3TC);
   visitor->traceWrappers(m_webglCompressedTextureS3TCsRGB);
   visitor->traceWrappers(m_webglDebugRendererInfo);
   visitor->traceWrappers(m_webglDebugShaders);
   visitor->traceWrappers(m_webglLoseContext);
   WebGL2RenderingContextBase::traceWrappers(visitor);
 }
 
 }  // namespace blink