Implemented new UI for error messages on OOBE/Login.

chrome/browser/chromeos/login/existing_user_controller.h

Index: chrome/browser/chromeos/login/existing_user_controller.h
diff --git a/chrome/browser/chromeos/login/existing_user_controller.h b/chrome/browser/chromeos/login/existing_user_controller.h
index 16397e6bef0abce93eb83ae35179c5f1b4dc1088..183f8601efbf824bc78bca33c80868305a82a193 100644
--- a/chrome/browser/chromeos/login/existing_user_controller.h
+++ b/chrome/browser/chromeos/login/existing_user_controller.h
@@ -167,11 +167,8 @@ class ExistingUserController : public LoginDisplay::Delegate,
   // Shows "reset device" screen.
   void ShowResetScreen();
 
-  // Shows "critical TPM error" screen and starts reboot timer.
-  void ShowTPMErrorAndScheduleReboot();
-
-  // Reboot timer handler.
-  void OnRebootTimeElapsed();
+  // Shows "critical TPM error" screen.
+  void ShowTPMError();
 
   // Invoked to complete login. Login might be suspended if auto-enrollment
   // has to be performed, and will resume once auto-enrollment completes.