Fix WebGL operations for dartc and frog.

client/dom/generated/monkey_dom.js

 // Copyright (c) 2011, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 // DO NOT EDIT
 // Auto-generated Dart DOM implementation.
 
 function DOM$EnsureDartNull(value) {
   return value === null ? (void 0) : value;
 }
@@ skipping 7545 matching lines @@
     'getError',
     'getExtension',
     'getFramebufferAttachmentParameter',
     'getParameter',
     'getProgramInfoLog',
     'getProgramParameter',
     'getRenderbufferParameter',
     'getShaderInfoLog',
     'getShaderParameter',
     'getShaderSource',
-    'getSupportedExtensions',
     'getTexParameter',
     'getUniform',
     'getUniformLocation',
     'getVertexAttrib',
     'getVertexAttribOffset',
     'hint',
     'isBuffer',
     'isContextLost',
     'isEnabled',
     'isFramebuffer',
@@ skipping 2582 matching lines @@
 function native__NativeDomGlobalProperties_getWindow() {
   // TODO: Should the window be obtained from an isolate?
   return window;
 }
 
 // Declared in src/GlobalProperties.dart
 function native__NativeDomGlobalProperties_getDocument() {
   // TODO: Should the window be obtained from an isolate?
   return window.document;
 }