Use fake Input Device Settings with chrome://device-emulator

chrome/browser/resources/chromeos/emulator/bluetooth_settings.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.
 
 /**
  * A bluetooth device.
  * @constructor
  */
 var BluetoothDevice = function() {
   // The device's address (MAC format, must be unique).
@@ skipping 115 matching lines @@
     },
   },
 
   /**
    * Contains keys for all the device paths which have been discovered. Used
    * to look up whether or not a device is listed already.
    * @type {Object}
    */
   devicePaths: {},
 
-  ready: function() { this.title = 'Bluetooth'; },
-
-  initialize: function() {
-    if (!this.initialized) {
-      this.initialized = true;
-      chrome.send('requestBluetoothInfo');
-    }
+  ready: function() {
+    chrome.send('requestBluetoothInfo');
   },
 
   observers: ['currentEditableObjectChanged(currentEditableObject.*)'],
 
   /**
    * Called when a property of the currently editable object is edited.
    * Sets the corresponding property for the object in |this.devices|.
    * @param {Object} obj An object containing event information (ex. which
    *     property of |this.currentEditableObject| was changed, what its value
    *     is, etc.)
@@ skipping 362 matching lines @@
    * @return {number} The value which |classText| represents.
    */
   getValueForDeviceClass: function(classText) {
     for (var i = 0; i < this.deviceClassOptions.length; ++i) {
       if (this.deviceClassOptions[i].text == classText)
         return this.deviceClassOptions[i].value;
     }
     return 0;
   },
 });