Implement transferToImageBitmap() in WebGLRenderingContext

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 130 matching lines @@
     result.setWebGLRenderingContext(this);
 }
 
 void WebGLRenderingContext::setOffscreenCanvasGetContextResult(OffscreenRenderingContext& result)
 {
     result.setWebGLRenderingContext(this);
 }
 
 ImageBitmap* WebGLRenderingContext::transferToImageBitmap(ExceptionState& exceptionState)
 {
-    NOTIMPLEMENTED();
-    return nullptr;
+    return transferToImageBitmapBase();
 }
 
 void WebGLRenderingContext::registerContextExtensions()
 {
     // Register extensions.
     static const char* const bothPrefixes[] = { "", "WEBKIT_", 0, };
 
     registerExtension<ANGLEInstancedArrays>(m_angleInstancedArrays);
     registerExtension<EXTBlendMinMax>(m_extBlendMinMax);
     registerExtension<EXTDisjointTimerQuery>(m_extDisjointTimerQuery);
@@ skipping 70 matching lines @@
     visitor->traceWrappers(m_webglDebugShaders);
     visitor->traceWrappers(m_webglDrawBuffers);
     visitor->traceWrappers(m_webglCompressedTextureASTC);
     visitor->traceWrappers(m_webglCompressedTextureATC);
     visitor->traceWrappers(m_webglCompressedTextureETC1);
     visitor->traceWrappers(m_webglCompressedTexturePVRTC);
     visitor->traceWrappers(m_webglCompressedTextureS3TC);
     visitor->traceWrappers(m_webglDepthTexture);
 }
 } // namespace blink