Make OffscreenCanvas an EventTarget

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 76 matching lines @@
 
 CanvasRenderingContext* WebGLRenderingContext::Factory::create(
     ScriptState* scriptState,
     OffscreenCanvas* offscreenCanvas,
     const CanvasContextCreationAttributes& attrs) {
   std::unique_ptr<WebGraphicsContext3DProvider> contextProvider(
       createWebGraphicsContext3DProvider(scriptState, attrs, 1));
   if (!shouldCreateContext(contextProvider.get()))
     return nullptr;
 
-  WebGLRenderingContext* renderingContext = new WebGLRenderingContext(
-      offscreenCanvas, std::move(contextProvider), attrs);
+  WebGLRenderingContext* renderingContext =
+      new WebGLRenderingContext(offscreenCanvas, std::move(contextProvider),
+                                attrs, scriptState->getExecutionContext());
   if (!renderingContext->drawingBuffer())
     return nullptr;
   renderingContext->initializeNewContext();
   renderingContext->registerContextExtensions();
 
   return renderingContext;
 }
 
 CanvasRenderingContext* WebGLRenderingContext::Factory::create(
     HTMLCanvasElement* canvas,
@@ skipping 29 matching lines @@
     std::unique_ptr<WebGraphicsContext3DProvider> contextProvider,
     const CanvasContextCreationAttributes& requestedAttributes)
     : WebGLRenderingContextBase(passedCanvas,
                                 std::move(contextProvider),
                                 requestedAttributes,
                                 1) {}
 
 WebGLRenderingContext::WebGLRenderingContext(
     OffscreenCanvas* passedOffscreenCanvas,
     std::unique_ptr<WebGraphicsContext3DProvider> contextProvider,
-    const CanvasContextCreationAttributes& requestedAttributes)
+    const CanvasContextCreationAttributes& requestedAttributes,
+    ExecutionContext* executionContext)
     : WebGLRenderingContextBase(passedOffscreenCanvas,
                                 std::move(contextProvider),
                                 requestedAttributes,
+                                executionContext,
                                 1) {}
 
 WebGLRenderingContext::~WebGLRenderingContext() {}
 
 void WebGLRenderingContext::setCanvasGetContextResult(
     RenderingContext& result) {
   result.setWebGLRenderingContext(this);
 }
 
 void WebGLRenderingContext::setOffscreenCanvasGetContextResult(
@@ skipping 78 matching lines @@
   visitor->trace(m_webglDepthTexture);
   WebGLRenderingContextBase::trace(visitor);
 }
 
 DEFINE_TRACE_WRAPPERS(WebGLRenderingContext) {
   // Extensions are managed base WebGLRenderingContextBase.
   WebGLRenderingContextBase::traceWrappers(visitor);
 }
 
 }  // namespace blink