Add UMA stats for user settings

chrome/browser/resources/options/chromeos/accounts_options.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.
 
 cr.define('options', function() {
   var OptionsPage = options.OptionsPage;
 
   /////////////////////////////////////////////////////////////////////////////
   // AccountsOptions class:
 
@@ skipping 99 matching lines @@
       this.updateControls_();
     },
 
     /**
      * Handler for "add" event fired from userNameEdit.
      * @private
      * @param {Event} e Add event fired from userNameEdit.
      */
     handleAddUser_: function(e) {
       chrome.send('whitelistUser', [e.user.email, e.user.name]);
+      chrome.send('coreOptionsUserMetricsAction',
+                  ['Options_WhitelistedUser_Add']);
     },
 
     /**
      * Handler for "remove" event fired from userList.
      * @private
      * @param {Event} e Remove event fired from userList.
      */
     handleRemoveUser_: function(e) {
       chrome.send('unwhitelistUser', [e.user.username]);
+      chrome.send('coreOptionsUserMetricsAction',
+                  ['Options_WhitelistedUser_Remove']);
     }
   };
 
 
   /**
    * Returns whether the whitelist is managed by policy or not.
    */
   AccountsOptions.whitelistIsManaged = function() {
     return loadTimeData.getBoolean('whitelist_is_managed');
   };
 
   /**
    * Update account picture.
    * @param {string} username User for which to update the image.
    */
   AccountsOptions.updateAccountPicture = function(username) {
     if (this.showWhitelist_)
       $('userList').updateAccountPicture(username);
   };
 
   // Export
   return {
     AccountsOptions: AccountsOptions
   };
 
 });