WebGL: Transfer ownership of WebGraphicsContext3D from WebGLRenderingContext to DrawingBuffer.

Source/core/html/canvas/WebGLProgram.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 25 matching lines @@
     return adoptRef(new WebGLProgram(ctx));
 }
 
 WebGLProgram::WebGLProgram(WebGLRenderingContextBase* ctx)
     : WebGLSharedObject(ctx)
     , m_linkStatus(false)
     , m_linkCount(0)
     , m_infoValid(true)
 {
     ScriptWrappable::init(this);
-    setObject(ctx->webGraphicsContext3D()->createProgram());
+    setObject(ctx->webContext()->createProgram());
 }
 
 WebGLProgram::~WebGLProgram()
 {
     deleteObject(0);
 }
 
 void WebGLProgram::deleteObjectImpl(blink::WebGraphicsContext3D* context3d, Platform3DObject obj)
 {
     context3d->deleteProgram(obj);
@@ skipping 128 matching lines @@
         return;
     GLint linkStatus = 0;
     context->getProgramiv(object(), GL_LINK_STATUS, &linkStatus);
     m_linkStatus = linkStatus;
     if (m_linkStatus)
         cacheActiveAttribLocations(context);
     m_infoValid = true;
 }
 
 }