Add functionality to Bluetooth settings UI.

chrome/browser/resources/chromeos/emulator/device_emulator.js

 // Copyright 2015 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.
 
 cr.define('device_emulator', function() {
   'use strict';
 
   var batterySettings = $('battery-settings');
   var bluetoothSettings = $('bluetooth-settings');
 
   function initialize() {
     chrome.send('requestPowerInfo');
+    chrome.send('requestBluetoothInfo');
 
     var toggles = document.getElementsByClassName('menu-item-toggle');
     for (var i = 0; i < toggles.length; ++i) {
         toggles[i].addEventListener('click', handleDrawerItemClick);
     }
   }
 
   /**
    * Shows/hides a sidebar elements designated content.
    * The content is identified by the |data-content-id| attribute of the
    * sidebar element. This value is the ID of the HTML element to be toggled.
    * @param {Event} e Contains information about the event which was fired.
    */
   function handleDrawerItemClick(e) {
     var content = $(e.target.dataset.contentId);
     content.hidden = !content.hidden;
   }
 
   // Return an object with all of the exports.
   return {
     initialize: initialize,
     batterySettings: batterySettings,
     bluetoothSettings: bluetoothSettings,
   };
 });
 
 document.addEventListener('DOMContentLoaded', device_emulator.initialize);