Add a lock to the managed user settings page and require authentication for unlocking.

chrome/browser/resources/options/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.
 
 var AddLanguageOverlay = options.AddLanguageOverlay;
 var AlertOverlay = options.AlertOverlay;
 var AutofillEditAddressOverlay = options.AutofillEditAddressOverlay;
 var AutofillEditCreditCardOverlay = options.AutofillEditCreditCardOverlay;
 var AutofillOptions = options.AutofillOptions;
 var BrowserOptions = options.BrowserOptions;
 var ClearBrowserDataOverlay = options.ClearBrowserDataOverlay;
 var ConfirmDialog = options.ConfirmDialog;
 var ContentSettingsExceptionsArea =
     options.contentSettings.ContentSettingsExceptionsArea;
 var ContentSettings = options.ContentSettings;
 var CookiesView = options.CookiesView;
 var CreateProfileOverlay = options.CreateProfileOverlay;
 var EditDictionaryOverlay = cr.IsMac ? null : options.EditDictionaryOverlay;
 var FactoryResetOverlay = options.FactoryResetOverlay;
+var ManagedUserSetPassphraseOverlay = options.ManagedUserSetPassphraseOverlay;
 var ManagedUserSettings = options.ManagedUserSettings;
 var FontSettings = options.FontSettings;
 var HandlerOptions = options.HandlerOptions;
 var HomePageOverlay = options.HomePageOverlay;
 var ImportDataOverlay = options.ImportDataOverlay;
 var LanguageOptions = options.LanguageOptions;
 var ManageProfileOverlay = options.ManageProfileOverlay;
 var MediaGalleriesManager = options.MediaGalleriesManager;
 var OptionsFocusManager = options.OptionsFocusManager;
 var OptionsPage = options.OptionsPage;
@@ skipping 107 matching lines @@
                               BrowserOptions.getInstance(),
                               [$('change-home-page')]);
   OptionsPage.registerOverlay(ImportDataOverlay.getInstance(),
                               BrowserOptions.getInstance());
   OptionsPage.registerOverlay(LanguageOptions.getInstance(),
                               BrowserOptions.getInstance(),
                               [$('language-button')]);
   OptionsPage.registerOverlay(ManageProfileOverlay.getInstance(),
                               BrowserOptions.getInstance());
   if (loadTimeData.getBoolean('managedUsersEnabled')) {
+    OptionsPage.registerOverlay(ManagedUserSetPassphraseOverlay.getInstance(),
+                                ManagedUserSettings.getInstance(),
+                                [$('set-passphrase')]);
     OptionsPage.registerOverlay(ManagedUserSettings.getInstance(),
                                 BrowserOptions.getInstance(),
-                                []);
+                                [$('managed-user-settings-button')]);
   }
   OptionsPage.registerOverlay(MediaGalleriesManager.getInstance(),
                               ContentSettings.getInstance(),
                               [$('manage-galleries-button')]);
   OptionsPage.registerOverlay(PasswordManager.getInstance(),
                               BrowserOptions.getInstance(),
                               [$('manage-passwords')]);
   OptionsPage.registerOverlay(SearchEngineManager.getInstance(),
                               BrowserOptions.getInstance(),
                               [$('manage-default-search-engines')]);
@@ skipping 104 matching lines @@
   options.OptionsPage.willClose();
 };
 
 /**
  * Listener for the |popstate| event.
  * @param {Event} e The |popstate| event.
  */
 window.onpopstate = function(e) {
   options.OptionsPage.setState(e.state);
 };