Add OVERRIDE to chrome/browser/chromeos/.

chrome/browser/chromeos/login/wizard_accessibility_handler.h

Index: chrome/browser/chromeos/login/wizard_accessibility_handler.h
diff --git a/chrome/browser/chromeos/login/wizard_accessibility_handler.h b/chrome/browser/chromeos/login/wizard_accessibility_handler.h
index 804a6de4718711fe6a59583c0bc0c7b52cd7df8f..5aba1f6354de788c487e877218b3d533a1f77b4c 100644
--- a/chrome/browser/chromeos/login/wizard_accessibility_handler.h
+++ b/chrome/browser/chromeos/login/wizard_accessibility_handler.h
@@ -8,6 +8,7 @@
 
 #include <string>
 
+#include "base/compiler_specific.h"
 #include "base/gtest_prod_util.h"
 #include "content/public/browser/notification_observer.h"
 #include "content/public/browser/notification_source.h"
@@ -43,7 +44,7 @@ class WizardAccessibilityHandler : public content::NotificationObserver {
   // Override from content::NotificationObserver.
   virtual void Observe(int type,
                        const content::NotificationSource& source,
-                       const content::NotificationDetails& details);
+                       const content::NotificationDetails& details) OVERRIDE;
 
   // Get text to speak and an earcon identifier (which may be NONE) for any
   // accessibility event.