Update WebUI calls to use extensions namespace, update IDs in c/b/r/extensions

chrome/browser/resources/extensions/extension_commands_overlay.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.
 
 <include src="extension_command_list.js"></include>
 
 cr.define('extensions', function() {
   'use strict';
 
   // The Extension Commands list object that will be used to show the commands
@@ skipping 13 matching lines @@
   ExtensionCommandsOverlay.prototype = {
     /**
      * Initialize the page.
      */
     initializePage: function() {
       var overlay = $('overlay');
       cr.ui.overlay.setupOverlay(overlay);
       cr.ui.overlay.globalInitialization();
       overlay.addEventListener('cancelOverlay', this.handleDismiss_.bind(this));
 
-      $('extensionCommandsDismiss').addEventListener('click',
+      $('extension-commands-dismiss').addEventListener('click',
           this.handleDismiss_.bind(this));
 
       // This will request the data to show on the page and will get a response
       // back in returnExtensionsData.
       chrome.send('extensionCommandsRequestExtensionsData');
     },
 
     /**
      * Handles a click on the dismiss button.
      * @param {Event} e The click event.
      */
     handleDismiss_: function(e) {
-      ExtensionSettings.showOverlay(null);
+      extensions.ExtensionSettings.showOverlay(null);
     },
   };
 
   /**
    * Called by the dom_ui_ to re-populate the page with data representing
    * the current state of extension commands.
    */
   ExtensionCommandsOverlay.returnExtensionsData = function(extensionsData) {
     ExtensionCommandList.prototype.data_ = extensionsData;
     var extensionCommandList = $('extension-command-list');
@@ skipping 10 matching lines @@
       list.classList.add('empty-extension-commands-list');
     else
       list.classList.remove('empty-extension-commands-list');
   }
 
   // Export
   return {
     ExtensionCommandsOverlay: ExtensionCommandsOverlay
   };
 });
-
-// Update the C++ call so this isn't necessary.
-var ExtensionCommandsOverlay = extensions.ExtensionCommandsOverlay;