Add support for AMD to the extensions module system.

extensions/renderer/resources/utils.js

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-var createClassWrapper = requireNative('utils').createClassWrapper;
+var createClassWrapper = requireNative('utils_natives').createClassWrapper;
 var schemaRegistry = requireNative('schema_registry');
 var CHECK = requireNative('logging').CHECK;
 var WARNING = requireNative('logging').WARNING;
 
 /**
  * An object forEach. Calls |f| with each (key, value) pair of |obj|, using
  * |self| as the target.
  * @param {Object} obj The object to iterate over.
  * @param {function} f The function to call in each iteration.
  * @param {Object} self The object to use as |this| in each function call.
@@ skipping 105 matching lines @@
     });
   }
 
   return publicClass;
 }
 
 exports.forEach = forEach;
 exports.loadTypeSchema = loadTypeSchema;
 exports.lookup = lookup;
 exports.expose = expose;