replace OVERRIDE and FINAL with override and final in ash/

ash/test/test_system_tray_delegate.h

 // Copyright 2013 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 ASH_TEST_TEST_SYSTEM_TRAY_DELEGATE_H_
 #define ASH_TEST_TEST_SYSTEM_TRAY_DELEGATE_H_
 
 #include "ash/system/tray/default_system_tray_delegate.h"
 #include "base/time/time.h"
 
@@ skipping 24 matching lines @@
   }
 
   // Updates the session length limit so that the limit will come from now in
   // |new_limit|.
   void SetSessionLengthLimitForTest(const base::TimeDelta& new_limit);
 
   // Clears the session length limit.
   void ClearSessionLengthLimit();
 
   // Overridden from SystemTrayDelegate:
-  virtual user::LoginStatus GetUserLoginStatus() const OVERRIDE;
-  virtual bool IsUserSupervised() const OVERRIDE;
-  virtual bool ShouldShowDisplayNotification() OVERRIDE;
+  virtual user::LoginStatus GetUserLoginStatus() const override;
+  virtual bool IsUserSupervised() const override;
+  virtual bool ShouldShowDisplayNotification() override;
   virtual bool GetSessionStartTime(
-      base::TimeTicks* session_start_time) OVERRIDE;
+      base::TimeTicks* session_start_time) override;
   virtual bool GetSessionLengthLimit(
-      base::TimeDelta* session_length_limit) OVERRIDE;
-  virtual void ShutDown() OVERRIDE;
-  virtual void SignOut() OVERRIDE;
+      base::TimeDelta* session_length_limit) override;
+  virtual void ShutDown() override;
+  virtual void SignOut() override;
 
  private:
   bool should_show_display_notification_;
   user::LoginStatus login_status_;
   base::TimeDelta session_length_limit_;
   bool session_length_limit_set_;
 
   DISALLOW_COPY_AND_ASSIGN(TestSystemTrayDelegate);
 };
 
 }  // namespace test
 }  // namespace ash
 
 #endif  // ASH_TEST_TEST_SYSTEM_TRAY_DELEGATE_H_