Add a screen to migrate filesystem encryption from eCryptfs to ext4 crypto.

chrome/browser/resources/chromeos/login/login.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.
 
 /**
  * @fileoverview Login UI based on a stripped down OOBE controller.
  */
 
 // <include src="login_shared.js">
 // <include src="login_non_lock_shared.js">
@@ skipping 20 matching lines @@
       login.SupervisedUserCreationScreen.register();
       login.TermsOfServiceScreen.register();
       login.ArcTermsOfServiceScreen.register();
       login.AppLaunchSplashScreen.register();
       login.ArcKioskSplashScreen.register();
       login.ConfirmPasswordScreen.register();
       login.FatalErrorScreen.register();
       login.DeviceDisabledScreen.register();
       login.UnrecoverableCryptohomeErrorScreen.register();
       login.ActiveDirectoryPasswordChangeScreen.register(/* lazyInit= */ true);
+      login.EncryptionMigrationScreen.register();
 
       cr.ui.Bubble.decorate($('bubble'));
       login.HeaderBar.decorate($('login-header-bar'));
 
       chrome.send('screenStateInitialize');
     },
 
     // Dummy Oobe functions not present with stripped login UI.
     initializeA11yMenu: function(e) {},
     handleAccessibilityLinkClick: function(e) {},
     handleSpokenFeedbackClick: function(e) {},
     handleHighContrastClick: function(e) {},
     handleScreenMagnifierClick: function(e) {},
     setUsageStats: function(checked) {},
     setOemEulaUrl: function(oemEulaUrl) {},
     setTpmPassword: function(password) {},
     refreshA11yInfo: function(data) {},
 
     /**
      * Reloads content of the page.
      * @param {!Object} data New dictionary with i18n values.
      */
     reloadContent: function(data) {
       loadTimeData.overrideValues(data);
       i18nTemplate.process(document, loadTimeData);
       Oobe.getInstance().updateLocalizedContent_();
     },
   };
 });