WebUI: Fix violations of no-extra-semi lint rule.

chrome/browser/resources/options/supervised_user_list_data.js

 // Copyright 2014 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('options', function() {
   /**
    * SupervisedUserListData class.
    * Handles requests for retrieving a list of existing supervised users which
    * are supervised by the current profile. For each request a promise is
    * returned, which is cached in order to reuse the retrieved supervised users
    * for future requests. The first request will be handled asynchronously.
    * @constructor
    * @class
    */
   function SupervisedUserListData() {
     this.observers_ = [];
-  };
+  }
 
   cr.addSingletonGetter(SupervisedUserListData);
 
   /**
    * Receives a list of supervised users and resolves the promise.
    * @param {Array<Object>} supervisedUsers Array of supervised user objects.
    *     Each object is of the form:
    *       supervisedUser = {
    *         id: "Supervised User ID",
    *         name: "Supervised User Name",
@@ skipping 113 matching lines @@
     'removeObserver',
     'requestExistingSupervisedUsers',
     'resetPromise',
   ]);
 
   // Export
   return {
     SupervisedUserListData: SupervisedUserListData,
   };
 });