Fix some JS style nits.

components/proximity_auth/webui/resources/device-list.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.
 
 Polymer('device-list', {
   publish: {
     /**
      * The label of the list to be displayed.
      * @type {string}
      */
     label: 'Device List',
 
     /**
      * Info of the devices contained in the list.
-     * @type {Array.<DeviceInfo>}
+     * @type {Array<DeviceInfo>}
      */
     devices: null
   },
 
   /**
    * Called when an instance is created.
    */
   created: function() {
     this.devices = [];
   },
@@ skipping 41 matching lines @@
         return 'device:bluetooth-disabled';
       case 'deviceOffline':
         return 'device:signal-cellular-off';
       case 'invalidCredentials':
         return 'notification:sync-problem';
       default:
         return 'error';
     };
   }
 });