Add OVERRIDE to chrome/browser/chromeos/.

chrome/browser/chromeos/login/webui_screen_locker.h

 // Copyright (c) 2011 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_WEBUI_SCREEN_LOCKER_H_
 #define CHROME_BROWSER_CHROMEOS_LOGIN_WEBUI_SCREEN_LOCKER_H_
 #pragma once
 
 #include <string>
 
@@ skipping 47 matching lines @@
                              const std::string& password) OVERRIDE;
   virtual void Login(const std::string& username,
                      const std::string& password) OVERRIDE;
   virtual void LoginAsGuest() OVERRIDE;
   virtual void OnUserSelected(const std::string& username) OVERRIDE;
   virtual void OnStartEnterpriseEnrollment() OVERRIDE;
 
   // content::NotificationObserver implementation.
   virtual void Observe(int type,
                        const content::NotificationSource& source,
-                       const content::NotificationDetails& details);
+                       const content::NotificationDetails& details) OVERRIDE;
 
  private:
   virtual ~WebUIScreenLocker();
 
   // Called when the window manager is ready to handle locked state.
   void OnWindowManagerReady();
 
   // Called when the all inputs are grabbed.
   void OnGrabInputs();
 
@@ skipping 35 matching lines @@
   // Status of keyboard and mouse grab.
   GdkGrabStatus kbd_grab_status_;
   GdkGrabStatus mouse_grab_status_;
 
   DISALLOW_COPY_AND_ASSIGN(WebUIScreenLocker);
 };
 
 }  // namespace chromeos
 
 #endif  // CHROME_BROWSER_CHROMEOS_LOGIN_WEBUI_SCREEN_LOCKER_H_