Add OVERRIDE to chrome/test/.

chrome/test/base/ui_test_utils.h

Index: chrome/test/base/ui_test_utils.h
diff --git a/chrome/test/base/ui_test_utils.h b/chrome/test/base/ui_test_utils.h
index 9b94f722d3093cf0a8ef501f5773003cc631f192..9c5b0bec1fc83fa7fe2f86a08cc437efb66d8308 100644
--- a/chrome/test/base/ui_test_utils.h
+++ b/chrome/test/base/ui_test_utils.h
@@ -352,7 +352,7 @@ class TestNotificationObserver : public content::NotificationObserver {
   // content::NotificationObserver:
   virtual void Observe(int type,
                        const content::NotificationSource& source,
-                       const content::NotificationDetails& details);
+                       const content::NotificationDetails& details) OVERRIDE;
 
  private:
   content::NotificationSource source_;
@@ -536,7 +536,7 @@ class DOMMessageQueue : public content::NotificationObserver {
   // Overridden content::NotificationObserver methods.
   virtual void Observe(int type,
                        const content::NotificationSource& source,
-                       const content::NotificationDetails& details);
+                       const content::NotificationDetails& details) OVERRIDE;
 
  private:
   content::NotificationRegistrar registrar_;