kiosk: Fix bailout shortcut not working.

chrome/browser/chromeos/login/existing_user_controller.cc

Index: chrome/browser/chromeos/login/existing_user_controller.cc
diff --git a/chrome/browser/chromeos/login/existing_user_controller.cc b/chrome/browser/chromeos/login/existing_user_controller.cc
index 3378e9979d479d658dd8bf65be5201b7e9fa8fef..dc4df76dc988639a8927728507dceed3dd832d32 100644
--- a/chrome/browser/chromeos/login/existing_user_controller.cc
+++ b/chrome/browser/chromeos/login/existing_user_controller.cc
@@ -845,6 +845,9 @@ void ExistingUserController::LoginAsPublicSession(
 
 void ExistingUserController::LoginAsKioskApp(const std::string& app_id,
                                              bool diagnostic_mode) {
+  // Reenable login display so that bailout shortcut key works.
+  login_display_->SetUIEnabled(true);
+
   const bool auto_start = false;
   host_->StartAppLaunch(app_id, diagnostic_mode, auto_start);
 }