chromeos: Remove old status-area related code.

chrome/browser/chromeos/login/existing_user_controller.h

 // 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.
 
 #ifndef CHROME_BROWSER_CHROMEOS_LOGIN_EXISTING_USER_CONTROLLER_H_
 #define CHROME_BROWSER_CHROMEOS_LOGIN_EXISTING_USER_CONTROLLER_H_
 #pragma once
 
 #include <string>
 
@@ skipping 115 matching lines @@
 
   // Starts WizardController with the specified screen.
   void ActivateWizard(const std::string& screen_name);
 
   // Returns corresponding native window.
   gfx::NativeWindow GetNativeWindow() const;
 
   // Adds first-time login URLs.
   void InitializeStartUrls() const;
 
-  // Changes state of the status area. During login operation it's disabled.
-  void SetStatusAreaEnabled(bool enable);
-
   // Show error message. |error_id| error message ID in resources.
   // If |details| string is not empty, it specify additional error text
   // provided by authenticator, it is not localized.
   void ShowError(int error_id, const std::string& details);
 
   // Shows Gaia page because password change was detected.
   void ShowGaiaPasswordChanged(const std::string& username);
 
   // Handles result of ownership check and starts enterprise enrollment if
   // applicable.
@@ skipping 93 matching lines @@
   base::Time time_init_;
 
   FRIEND_TEST_ALL_PREFIXES(ExistingUserControllerTest, ExistingUserLogin);
 
   DISALLOW_COPY_AND_ASSIGN(ExistingUserController);
 };
 
 }  // namespace chromeos
 
 #endif  // CHROME_BROWSER_CHROMEOS_LOGIN_EXISTING_USER_CONTROLLER_H_