Add OVERRIDE to chrome/browser/sync/.

chrome/browser/sync/util/extensions_activity_monitor.h

 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CHROME_BROWSER_SYNC_UTIL_EXTENSIONS_ACTIVITY_MONITOR_H_
 #define CHROME_BROWSER_SYNC_UTIL_EXTENSIONS_ACTIVITY_MONITOR_H_
 #pragma once
 
 #include <map>
 
+#include "base/compiler_specific.h"
 #include "base/message_loop.h"
 #include "base/synchronization/lock.h"
 #include "content/public/browser/notification_observer.h"
 #include "content/public/browser/notification_registrar.h"
 
 namespace browser_sync {
 
 // A class to monitor usage of extensions APIs to send to sync servers, with
 // the ability to purge data once sync servers have acknowledged it (successful
 // commit response).
@@ skipping 31 matching lines @@
   // swapping.  This is done mutually exclusively w.r.t methods of this class.
   void GetAndClearRecords(Records* buffer);
 
   // Add |records| piece-wise (by extension id) to the set of active records.
   // This is done mutually exclusively w.r.t the methods of this class.
   void PutRecords(const Records& records);
 
   // content::NotificationObserver implementation.  Called on |ui_loop_|.
   virtual void Observe(int type,
                        const content::NotificationSource& source,
-                       const content::NotificationDetails& details);
+                       const content::NotificationDetails& details) OVERRIDE;
  private:
   Records records_;
   mutable base::Lock records_lock_;
 
   // Used only from UI loop.
   content::NotificationRegistrar registrar_;
 };
 
 }  // namespace browser_sync
 
 #endif  // CHROME_BROWSER_SYNC_UTIL_EXTENSIONS_ACTIVITY_MONITOR_H_