Completely removed the Extensions3D class (Take 2)

Source/core/html/canvas/WebGLDepthTexture.cpp

 /*
  * Copyright (C) 2012 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
  *     documentation and/or other materials provided with the distribution.
  *
  * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
  * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
  * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
  * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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 #include "config.h"
 
 #include "core/html/canvas/WebGLDepthTexture.h"
 
-#include "platform/graphics/Extensions3D.h"
-
 namespace WebCore {
 
 WebGLDepthTexture::WebGLDepthTexture(WebGLRenderingContext* context)
     : WebGLExtension(context)
 {
     ScriptWrappable::init(this);
-    context->graphicsContext3D()->extensions()->ensureEnabled("GL_CHROMIUM_depth_texture");
+    context->graphicsContext3D()->ensureExtensionEnabled("GL_CHROMIUM_depth_texture");
 }
 
 WebGLDepthTexture::~WebGLDepthTexture()
 {
 }
 
 WebGLExtension::ExtensionName WebGLDepthTexture::name() const
 {
     return WebGLDepthTextureName;
 }
 
 PassRefPtr<WebGLDepthTexture> WebGLDepthTexture::create(WebGLRenderingContext* context)
 {
     return adoptRef(new WebGLDepthTexture(context));
 }
 
 bool WebGLDepthTexture::supported(WebGLRenderingContext* context)
 {
-    Extensions3D* extensions = context->graphicsContext3D()->extensions();
+    GraphicsContext3D* contextSupport = context->graphicsContext3D();
     // Emulating the UNSIGNED_INT_24_8_WEBGL texture internal format in terms
     // of two separate texture objects is too difficult, so disable depth
     // textures unless a packed depth/stencil format is available.
-    if (!extensions->supports("GL_OES_packed_depth_stencil"))
+    if (!contextSupport->supportsExtension("GL_OES_packed_depth_stencil"))
         return false;
-    return extensions->supports("GL_CHROMIUM_depth_texture")
-        || extensions->supports("GL_OES_depth_texture")
-        || extensions->supports("GL_ARB_depth_texture");
+    return contextSupport->supportsExtension("GL_CHROMIUM_depth_texture")
+        || contextSupport->supportsExtension("GL_OES_depth_texture")
+        || contextSupport->supportsExtension("GL_ARB_depth_texture");
 }
 
 const char* WebGLDepthTexture::extensionName()
 {
     return "WEBGL_depth_texture";
 }
 
 } // namespace WebCore