Roll Chrome into Mojo.

net/tools/quic/quic_time_wait_list_manager.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.
 //
 // Handles packets for connection_ids in time wait state by discarding the
 // packet and sending the clients a public reset packet with exponential
 // backoff.
 
 #ifndef NET_TOOLS_QUIC_QUIC_TIME_WAIT_LIST_MANAGER_H_
 #define NET_TOOLS_QUIC_QUIC_TIME_WAIT_LIST_MANAGER_H_
@@ skipping 75 matching lines @@
   void OnCanWrite() override;
 
   // Used to delete connection_id entries that have outlived their time wait
   // period.
   void CleanUpOldConnectionIds();
 
   // Given a ConnectionId that exists in the time wait list, returns the
   // QuicVersion associated with it.
   QuicVersion GetQuicVersionFromConnectionId(QuicConnectionId connection_id);
 
+  // The number of connections on the time-wait list.
+  size_t num_connections() const { return connection_id_map_.size(); }
+
  protected:
   virtual QuicEncryptedPacket* BuildPublicReset(
       const QuicPublicResetPacket& packet);
 
  private:
   friend class test::QuicTimeWaitListManagerPeer;
 
   // Internal structure to store pending public reset packets.
   class QueuedPacket;
 
@@ skipping 66 matching lines @@
   // Interface that manages blocked writers.
   QuicServerSessionVisitor* visitor_;
 
   DISALLOW_COPY_AND_ASSIGN(QuicTimeWaitListManager);
 };
 
 }  // namespace tools
 }  // namespace net
 
 #endif  // NET_TOOLS_QUIC_QUIC_TIME_WAIT_LIST_MANAGER_H_