replace OVERRIDE and FINAL with override and final in extensions/

extensions/test/extension_test_message_listener.h

Index: extensions/test/extension_test_message_listener.h
diff --git a/extensions/test/extension_test_message_listener.h b/extensions/test/extension_test_message_listener.h
index b2d61326535bc743bfecf7d09aee46411537c81c..d1ca37bdbf685ec7204f0f5cdd6da8af94e417e2 100644
--- a/extensions/test/extension_test_message_listener.h
+++ b/extensions/test/extension_test_message_listener.h
@@ -131,7 +131,7 @@ class ExtensionTestMessageListener : public content::NotificationObserver {
   // Implements the content::NotificationObserver interface.
   virtual void Observe(int type,
                        const content::NotificationSource& source,
-                       const content::NotificationDetails& details) OVERRIDE;
+                       const content::NotificationDetails& details) override;
 
   content::NotificationRegistrar registrar_;