Implement ephemeral users

chrome/browser/resources/options/personal_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;
   var ArrayDataModel = cr.ui.ArrayDataModel;
 
   /**
@@ skipping 105 matching lines @@
         $('change-picture-button').onclick = function(event) {
           OptionsPage.navigateToPage('changePicture');
         };
         this.updateAccountPicture_();
 
         if (cr.commandLine && cr.commandLine.options['--bwsi']) {
           // Disable the screen lock checkbox and change-picture-button in
           // guest mode.
           $('enable-screen-lock').disabled = true;
           $('change-picture-button').disabled = true;
+        } else if (localStrings.getString('current_user_is_ephemeral') ==
+            'true') {
+          // Disable the change-picture-button for ephemeral users.
+          $('change-picture-button').disabled = true;
         }
       }
 
       if (PersonalOptions.disablePasswordManagement()) {
         // Disable the Password Manager in guest mode.
         $('passwords-offersave').disabled = true;
         $('passwords-neversave').disabled = true;
         $('passwords-offersave').value = false;
         $('passwords-neversave').value = true;
         $('manage-passwords').disabled = true;
@@ skipping 228 matching lines @@
       return instance[name + '_'].apply(instance, arguments);
     };
   });
 
   // Export
   return {
     PersonalOptions: PersonalOptions
   };
 
 });