Add support for AMD to the extensions module system.

chrome/renderer/resources/extensions/webstore_custom_bindings.js

 // Copyright (c) 2012 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.
 
 // Custom binding for the webstore API.
 
-var webstoreNatives = requireNative('webstore');
+var webstoreNatives = requireNative('webstore_natives');
 var Event = require('event_bindings').Event;
 
 function Installer() {
   this._pendingInstall = null;
   this.onInstallStageChanged =
       new Event(null, [{name: 'stage', type: 'string'}], {unmanaged: true});
   this.onDownloadProgress =
       new Event(null, [{name: 'progress', type: 'number'}], {unmanaged: true});
 }
 
@@ skipping 68 matching lines @@
 
 exports.binding = chromeWebstore;
 
 // Called by webstore_bindings.cc.
 exports.onInstallResponse =
     Installer.prototype.onInstallResponse.bind(installer);
 exports.onInstallStageChanged =
     Installer.prototype.onInstallStageChanged.bind(installer);
 exports.onDownloadProgress =
     Installer.prototype.onDownloadProgress.bind(installer);