Add OVERRIDE to chrome/browser/.

chrome/browser/metrics/thread_watcher.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.
 
 // This file defines a WatchDog thread that monitors the responsiveness of other
 // browser threads like UI, IO, DB, FILE and CACHED threads. It also defines
 // ThreadWatcher class which performs health check on threads that would like to
 // be watched. This file also defines ThreadWatcherList class that has list of
 // all active ThreadWatcher objects.
 //
@@ skipping 416 matching lines @@
   // Destructor of |g_thread_watcher_observer_| singleton.
   virtual ~ThreadWatcherObserver();
 
   // This ensures all thread watchers are active because there is some user
   // activity. It will wake up all thread watchers every |wakeup_interval_|
   // seconds. This is the implementation of content::NotificationObserver. When
   // a matching notification is posted to the notification service, this method
   // is called.
   virtual void Observe(int type,
                        const content::NotificationSource& source,
-                       const content::NotificationDetails& details);
+                       const content::NotificationDetails& details) OVERRIDE;
 
   // The singleton of this class.
   static ThreadWatcherObserver* g_thread_watcher_observer_;
 
   // The registrar that holds ints to be observed.
   content::NotificationRegistrar registrar_;
 
   // This is the last time when woke all thread watchers up.
   base::TimeTicks last_wakeup_time_;
 
@@ skipping 22 matching lines @@
   // They return true iff the watchdog thread existed and the task was posted.
   // Note that even if the task is posted, there's no guarantee that it will
   // run, since the target thread may already have a Quit message in its queue.
   static bool PostTask(const tracked_objects::Location& from_here,
                        const base::Closure& task);
   static bool PostDelayedTask(const tracked_objects::Location& from_here,
                               const base::Closure& task,
                               int64 delay_ms);
 
  protected:
-  virtual void Init();
-  virtual void CleanUp();
+  virtual void Init() OVERRIDE;
+  virtual void CleanUp() OVERRIDE;
 
  private:
   static bool PostTaskHelper(
       const tracked_objects::Location& from_here,
       const base::Closure& task,
       int64 delay_ms);
 
   DISALLOW_COPY_AND_ASSIGN(WatchDogThread);
 };
 
@@ skipping 36 matching lines @@
 
   DISALLOW_COPY_AND_ASSIGN(ShutdownWatcherHelper);
 };
 
 // DISABLE_RUNNABLE_METHOD_REFCOUNT is a convenience macro for disabling
 // refcounting of ThreadWatcher and ThreadWatcherList classes.
 DISABLE_RUNNABLE_METHOD_REFCOUNT(ThreadWatcher);
 DISABLE_RUNNABLE_METHOD_REFCOUNT(ThreadWatcherList);
 
 #endif  // CHROME_BROWSER_METRICS_THREAD_WATCHER_H_