Re-land "WebGL: Transfer ownership of WebGraphicsContext3D to DrawingBuffer"

Source/core/html/canvas/OESVertexArrayObject.cpp

 /*
  * Copyright (C) 2011 Google 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 54 matching lines @@
 }
 
 void OESVertexArrayObject::deleteVertexArrayOES(WebGLVertexArrayObjectOES* arrayObject)
 {
     if (!arrayObject || isLost())
         return;
 
     if (!arrayObject->isDefaultObject() && arrayObject == m_context->m_boundVertexArrayObject)
         m_context->setBoundVertexArrayObject(nullptr);
 
-    arrayObject->deleteObject(m_context->webGraphicsContext3D());
+    arrayObject->deleteObject(m_context->webContext());
 }
 
 GLboolean OESVertexArrayObject::isVertexArrayOES(WebGLVertexArrayObjectOES* arrayObject)
 {
     if (!arrayObject || isLost())
         return 0;
 
     if (!arrayObject->hasEverBeenBound())
         return 0;
 
-    return m_context->webGraphicsContext3D()->isVertexArrayOES(arrayObject->object());
+    return m_context->webContext()->isVertexArrayOES(arrayObject->object());
 }
 
 void OESVertexArrayObject::bindVertexArrayOES(WebGLVertexArrayObjectOES* arrayObject)
 {
     if (isLost())
         return;
 
     if (arrayObject && (arrayObject->isDeleted() || !arrayObject->validate(0, context()))) {
-        m_context->webGraphicsContext3D()->synthesizeGLError(GL_INVALID_OPERATION);
+        m_context->webContext()->synthesizeGLError(GL_INVALID_OPERATION);
         return;
     }
 
     if (arrayObject && !arrayObject->isDefaultObject() && arrayObject->object()) {
-        m_context->webGraphicsContext3D()->bindVertexArrayOES(arrayObject->object());
+        m_context->webContext()->bindVertexArrayOES(arrayObject->object());
 
         arrayObject->setHasEverBeenBound();
         m_context->setBoundVertexArrayObject(arrayObject);
     } else {
-        m_context->webGraphicsContext3D()->bindVertexArrayOES(0);
+        m_context->webContext()->bindVertexArrayOES(0);
         m_context->setBoundVertexArrayObject(nullptr);
     }
 }
 
 bool OESVertexArrayObject::supported(WebGLRenderingContextBase* context)
 {
     return context->extensionsUtil()->supportsExtension("GL_OES_vertex_array_object");
 }
 
 const char* OESVertexArrayObject::extensionName()
 {
     return "OES_vertex_array_object";
 }
 
 } // namespace WebCore