Allow switching between extended and unified

chrome/browser/resources/options/browser_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.exportPath('options');
 
 /**
  * @typedef {{actionLinkText: (string|undefined),
  *            childUser: (boolean|undefined),
  *            hasError: (boolean|undefined),
@@ skipping 1681 matching lines @@
      * @private
      */
     enableCertificateButton_: function(enabled) {
       $('certificatesManageButton').disabled = !enabled;
     },
 
     /**
      * Enables or disables the Chrome OS display settings button and overlay.
      * @private
      */
-    enableDisplaySettings_: function(enabled) {
+    enableDisplaySettings_: function(enabled, showUnifiedDesktop) {
       if (cr.isChromeOS) {
         $('display-options').disabled = !enabled;
-        DisplayOptions.getInstance().setEnabled(enabled);
+        DisplayOptions.getInstance().setEnabled(enabled, showUnifiedDesktop);
       }
     },
 
     /**
      * Enables factory reset section.
      * @private
      */
     enableFactoryResetSection_: function() {
       $('factory-reset-section').hidden = false;
     },
@@ skipping 553 matching lines @@
       }
       button.textContent = loadTimeData.getString(strId);
     };
   }
 
   // Export
   return {
     BrowserOptions: BrowserOptions
   };
 });