replace OVERRIDE and FINAL with override and final in chrome/browser/[r-z]*

chrome/browser/sessions/session_service_unittest.cc

Index: chrome/browser/sessions/session_service_unittest.cc
diff --git a/chrome/browser/sessions/session_service_unittest.cc b/chrome/browser/sessions/session_service_unittest.cc
index 67836f19f8d085bc16ce87735878eb3faf8cbd2a..edbedbe034f1b204ecfad2e4f883f670965e0ad3 100644
--- a/chrome/browser/sessions/session_service_unittest.cc
+++ b/chrome/browser/sessions/session_service_unittest.cc
@@ -71,7 +71,7 @@ class SessionServiceTest : public BrowserWithTestWindowTest,
   // Upon notification, increment the sync_save_count variable
   virtual void Observe(int type,
                        const content::NotificationSource& source,
-                       const content::NotificationDetails& details) OVERRIDE {
+                       const content::NotificationDetails& details) override {
     ASSERT_EQ(type, chrome::NOTIFICATION_SESSION_SERVICE_SAVED);
     sync_save_count_++;
   }