Implement OffscreenCanvas.getContext('webgl')

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/UnionTypesModules.h"
 #include "core/frame/LocalFrame.h"
 #include "core/frame/Settings.h"
 #include "core/loader/FrameLoader.h"
@@ skipping 66 matching lines @@
 WebGL2RenderingContext::~WebGL2RenderingContext()
 {
 
 }
 
 void WebGL2RenderingContext::setCanvasGetContextResult(RenderingContext& result)
 {
     result.setWebGL2RenderingContext(this);
 }
 
+void WebGL2RenderingContext::setOffscreenCanvasGetContextResult(OffscreenRenderingContext& result)
+{
+    result.setWebGL2RenderingContext(this);
+}
+
+ImageBitmap* WebGL2RenderingContext::transferToImageBitmap(ExceptionState& exceptionState)
+{
+    NOTIMPLEMENTED();
+    return nullptr;
+}
+
 void WebGL2RenderingContext::registerContextExtensions()
 {
     // Register extensions.
     registerExtension<CHROMIUMSubscribeUniform>(m_chromiumSubscribeUniform);
     registerExtension<EXTColorBufferFloat>(m_extColorBufferFloat, DraftExtension);
     registerExtension<EXTDisjointTimerQuery>(m_extDisjointTimerQuery);
     registerExtension<EXTTextureFilterAnisotropic>(m_extTextureFilterAnisotropic);
     registerExtension<OESTextureFloatLinear>(m_oesTextureFloatLinear);
     registerExtension<WebGLCompressedTextureASTC>(m_webglCompressedTextureASTC);
     registerExtension<WebGLCompressedTextureATC>(m_webglCompressedTextureATC);
@@ skipping 17 matching lines @@
     visitor->trace(m_webglCompressedTextureETC1);
     visitor->trace(m_webglCompressedTexturePVRTC);
     visitor->trace(m_webglCompressedTextureS3TC);
     visitor->trace(m_webglDebugRendererInfo);
     visitor->trace(m_webglDebugShaders);
     visitor->trace(m_webglLoseContext);
     WebGL2RenderingContextBase::trace(visitor);
 }
 
 } // namespace blink