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

chrome/browser/chromeos/login/existing_user_controller.cc

 // 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.
 
 #include "chrome/browser/chromeos/login/existing_user_controller.h"
 
 #include <memory>
 #include <vector>
 
 #include "base/bind.h"
@@ skipping 579 matching lines @@
 }
 
 void ExistingUserController::ShowKioskEnableScreen() {
   host_->StartWizard(OobeScreen::SCREEN_KIOSK_ENABLE);
 }
 
 void ExistingUserController::ShowKioskAutolaunchScreen() {
   host_->StartWizard(OobeScreen::SCREEN_KIOSK_AUTOLAUNCH);
 }
 
+void ExistingUserController::ShowEncryptionMigrationScreen() {
+  host_->StartWizard(OobeScreen::SCREEN_ENCRYPTION_MIGRATION);
+}
+
 void ExistingUserController::ShowTPMError() {
   login_display_->SetUIEnabled(false);
   login_display_->ShowErrorScreen(LoginDisplay::TPM_ERROR);
 }
 
 void ExistingUserController::ShowPasswordChangedDialog() {
   RecordPasswordChangeFlow(LOGIN_PASSWORD_CHANGE_FLOW_PASSWORD_CHANGED);
 
   VLOG(1) << "Show password changed dialog"
           << ", count=" << login_performer_->password_changed_callback_count();
@@ skipping 208 matching lines @@
           last_login_attempt_account_id_,
           base::Bind(&ExistingUserController::OnTokenHandleChecked,
                      weak_factory_.GetWeakPtr()));
       return;
     }
   }
 
   ShowPasswordChangedDialog();
 }
 
+void ExistingUserController::OnOldEncryptionDetected() {
+  ShowEncryptionMigrationScreen();
+}
+
 void ExistingUserController::WhiteListCheckFailed(const std::string& email) {
   PerformLoginFinishedActions(true /* start auto login timer */);
 
   login_display_->ShowWhitelistCheckFailedError();
 
   if (auth_status_consumer_) {
     auth_status_consumer_->OnAuthFailure(
         AuthFailure(AuthFailure::WHITELIST_CHECK_FAILED));
   }
 
@@ skipping 546 matching lines @@
   login_display_->ShowUnrecoverableCrypthomeErrorDialog();
 }
 
 void ExistingUserController::ClearRecordedNames() {
   display_email_.clear();
   display_name_.clear();
   given_name_.clear();
 }
 
 }  // namespace chromeos