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

Source/core/html/canvas/WebGLVertexArrayObjectOES.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 31 matching lines @@
     , m_hasEverBeenBound(false)
     , m_boundElementArrayBuffer(nullptr)
 {
     ScriptWrappable::init(this);
     m_vertexAttribState.resize(ctx->maxVertexAttribs());
 
     switch (m_type) {
     case VaoTypeDefault:
         break;
     default:
-        setObject(context()->webGraphicsContext3D()->createVertexArrayOES());
+        setObject(context()->webContext()->createVertexArrayOES());
         break;
     }
 }
 
 WebGLVertexArrayObjectOES::~WebGLVertexArrayObjectOES()
 {
     deleteObject(0);
 }
 
 void WebGLVertexArrayObjectOES::deleteObjectImpl(blink::WebGraphicsContext3D* context3d, Platform3DObject object)
 {
     switch (m_type) {
     case VaoTypeDefault:
         break;
     default:
-        context()->webGraphicsContext3D()->deleteVertexArrayOES(object);
+        context()->webContext()->deleteVertexArrayOES(object);
         break;
     }
 
     if (m_boundElementArrayBuffer)
         m_boundElementArrayBuffer->onDetached(context3d);
 
     for (size_t i = 0; i < m_vertexAttribState.size(); ++i) {
         VertexAttribState& state = m_vertexAttribState[i];
         if (state.bufferBinding)
             state.bufferBinding->onDetached(context3d);
     }
 }
 
 void WebGLVertexArrayObjectOES::setElementArrayBuffer(PassRefPtr<WebGLBuffer> buffer)
 {
     if (buffer)
         buffer->onAttached();
     if (m_boundElementArrayBuffer)
-        m_boundElementArrayBuffer->onDetached(context()->webGraphicsContext3D());
+        m_boundElementArrayBuffer->onDetached(context()->webContext());
     m_boundElementArrayBuffer = buffer;
 
 }
 
 void WebGLVertexArrayObjectOES::setVertexAttribState(
     GLuint index, GLsizei bytesPerElement, GLint size, GLenum type, GLboolean normalized, GLsizei stride, GLintptr offset, PassRefPtr<WebGLBuffer> buffer)
 {
     GLsizei validatedStride = stride ? stride : bytesPerElement;
 
     VertexAttribState& state = m_vertexAttribState[index];
 
     if (buffer)
         buffer->onAttached();
     if (state.bufferBinding)
-        state.bufferBinding->onDetached(context()->webGraphicsContext3D());
+        state.bufferBinding->onDetached(context()->webContext());
 
     state.bufferBinding = buffer;
     state.bytesPerElement = bytesPerElement;
     state.size = size;
     state.type = type;
     state.normalized = normalized;
     state.stride = validatedStride;
     state.originalStride = stride;
     state.offset = offset;
 }
 
 void WebGLVertexArrayObjectOES::unbindBuffer(PassRefPtr<WebGLBuffer> buffer)
 {
     if (m_boundElementArrayBuffer == buffer) {
-        m_boundElementArrayBuffer->onDetached(context()->webGraphicsContext3D());
+        m_boundElementArrayBuffer->onDetached(context()->webContext());
         m_boundElementArrayBuffer = nullptr;
     }
 
     for (size_t i = 0; i < m_vertexAttribState.size(); ++i) {
         VertexAttribState& state = m_vertexAttribState[i];
         if (state.bufferBinding == buffer) {
-            buffer->onDetached(context()->webGraphicsContext3D());
+            buffer->onDetached(context()->webContext());
             state.bufferBinding = nullptr;
         }
     }
 }
 
 void WebGLVertexArrayObjectOES::setVertexAttribDivisor(GLuint index, GLuint divisor)
 {
     VertexAttribState& state = m_vertexAttribState[index];
     state.divisor = divisor;
 }
 
 }