First part of work to move V8 binding integrity off of vtables.

Source/WebCore/html/canvas/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 453 matching lines @@
     , m_restoreAllowed(false)
     , m_restoreTimer(this, &WebGLRenderingContext::maybeRestoreContext)
     , m_videoCache(4)
     , m_contextLost(false)
     , m_contextLostMode(SyntheticLostContext)
     , m_attributes(attributes)
     , m_synthesizedErrorsToConsole(true)
     , m_numGLErrorsToConsoleAllowed(maxGLErrorsAllowedToConsole)
 {
     ASSERT(m_context);
+    ScriptWrappable::init(this);
+
     m_contextGroup = WebGLContextGroup::create();
     m_contextGroup->addContext(this);
 
     m_maxViewportDims[0] = m_maxViewportDims[1] = 0;
     m_context->getIntegerv(GraphicsContext3D::MAX_VIEWPORT_DIMS, m_maxViewportDims);
 
 #if PLATFORM(CHROMIUM)
     // Create the DrawingBuffer and initialize the platform layer.
     DrawingBuffer::PreserveDrawingBuffer preserve = m_attributes.preserveDrawingBuffer ? DrawingBuffer::Preserve : DrawingBuffer::Discard;
     DrawingBuffer::AlphaRequirement alpha = m_attributes.alpha ? DrawingBuffer::Alpha : DrawingBuffer::Opaque;
@@ skipping 5565 matching lines @@
 bool WebGLRenderingContext::supportsDrawBuffers()
 {
     if (!m_drawBuffersWebGLRequirementsChecked) {
         m_drawBuffersWebGLRequirementsChecked = true;
         m_drawBuffersSupported = EXTDrawBuffers::supported(this);
     }
     return m_drawBuffersSupported;
 }
 
 } // namespace WebCore