Standardize usage of virtual/override/final in net/

net/quic/quic_time_wait_list_manager.h

Index: net/quic/quic_time_wait_list_manager.h
diff --git a/net/quic/quic_time_wait_list_manager.h b/net/quic/quic_time_wait_list_manager.h
index 13544b71d5a050379cb9f45f33ce5ed85e923706..a01ad2ef85bc77ea008a50bb004b0c08ba29e770 100644
--- a/net/quic/quic_time_wait_list_manager.h
+++ b/net/quic/quic_time_wait_list_manager.h
@@ -48,7 +48,7 @@ class QuicTimeWaitListManager : public QuicBlockedWriterInterface {
                           QuicServerSessionVisitor* visitor,
                           QuicConnectionHelperInterface* helper,
                           const QuicVersionVector& supported_versions);
-  virtual ~QuicTimeWaitListManager();
+  ~QuicTimeWaitListManager() override;
 
   // Adds the given connection_id to time wait state for kTimeWaitPeriod.
   // Henceforth, any packet bearing this connection_id should not be processed
@@ -79,7 +79,7 @@ class QuicTimeWaitListManager : public QuicBlockedWriterInterface {
   // Called by the dispatcher when the underlying socket becomes writable again,
   // since we might need to send pending public reset packets which we didn't
   // send because the underlying socket was write blocked.
-  virtual void OnCanWrite() override;
+  void OnCanWrite() override;
 
   // Used to delete connection_id entries that have outlived their time wait
   // period.