Standardize usage of virtual/override/final in content/

content/public/test/test_notification_tracker.h

 // Copyright (c) 2012 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 CONTENT_PUBLIC_TEST_TEST_NOTIFICATION_TRACKER_H_
 #define CONTENT_PUBLIC_TEST_TEST_NOTIFICATION_TRACKER_H_
 
 #include <vector>
 
 #include "base/compiler_specific.h"
@@ skipping 15 matching lines @@
 
     int type;
     NotificationSource source;
     NotificationDetails details;
   };
 
   // By default, it won't listen for any notifications. You'll need to call
   // ListenFor for the notifications you are interested in.
   TestNotificationTracker();
 
-  virtual ~TestNotificationTracker();
+  ~TestNotificationTracker() override;
 
   // Makes this object listen for the given notification with the given source.
   void ListenFor(int type, const NotificationSource& source);
 
   // Makes this object listen for notifications of the given type coming from
   // any source.
   void ListenForAll(int type);
 
   // Clears the list of events.
   void Reset();
@@ skipping 15 matching lines @@
                       int type3);
 
   // Returns the number of notifications received since the last reset.
   size_t size() const { return events_.size(); }
 
   // Returns the information about the event at the given index. The index must
   // be in [0, size).
   const Event& at(size_t i) const { return events_[i]; }
 
  protected:
-  virtual void Observe(int type,
-                       const NotificationSource& source,
-                       const NotificationDetails& details) override;
+  void Observe(int type,
+               const NotificationSource& source,
+               const NotificationDetails& details) override;
+
  private:
   NotificationRegistrar registrar_;
 
   // Lists all received since last cleared, in the order they were received.
   std::vector<Event> events_;
 
   DISALLOW_COPY_AND_ASSIGN(TestNotificationTracker);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_PUBLIC_TEST_TEST_NOTIFICATION_TRACKER_H_