replace OVERRIDE and FINAL with override and final in chrome/browser/chromeos/

chrome/browser/chromeos/login/lock/screen_locker.cc

Index: chrome/browser/chromeos/login/lock/screen_locker.cc
diff --git a/chrome/browser/chromeos/login/lock/screen_locker.cc b/chrome/browser/chromeos/login/lock/screen_locker.cc
index 017e7146c08373a1f3a04748a3b887d2460f56a4..abc520c754c4ba3b2f0ce6d97424ab3b21dfbdf4 100644
--- a/chrome/browser/chromeos/login/lock/screen_locker.cc
+++ b/chrome/browser/chromeos/login/lock/screen_locker.cc
@@ -93,14 +93,14 @@ class ScreenLockObserver : public SessionManagerClient::StubDelegate,
   bool session_started() const { return session_started_; }
 
   // SessionManagerClient::StubDelegate overrides:
-  virtual void LockScreenForStub() OVERRIDE {
+  virtual void LockScreenForStub() override {
     ScreenLocker::HandleLockScreenRequest();
   }
 
   // NotificationObserver overrides:
   virtual void Observe(int type,
                        const content::NotificationSource& source,
-                       const content::NotificationDetails& details) OVERRIDE {
+                       const content::NotificationDetails& details) override {
     if (type == chrome::NOTIFICATION_SESSION_STARTED)
       session_started_ = true;
     else
@@ -108,7 +108,7 @@ class ScreenLockObserver : public SessionManagerClient::StubDelegate,
   }
 
   // UserAddingScreen::Observer overrides:
-  virtual void OnUserAddingFinished() OVERRIDE {
+  virtual void OnUserAddingFinished() override {
     UserAddingScreen::Get()->RemoveObserver(this);
     ScreenLocker::HandleLockScreenRequest();
   }