Refactor QuicClientSession so that it owns the underlying socket

net/quic/quic_connection.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.
 //
 // The entity that handles framing writes for a Quic client or server.
 // Each QuicSession will have a connection associated with it.
 //
 // On the server side, the Dispatcher handles the raw reads, and hands off
 // packets via ProcessUdpPacket for framing and processing.
 //
@@ skipping 353 matching lines @@
 
   // These two are called by OnAckFrame to update the appropriate internal
   // state.
   //
   // Updates internal state based on incoming_ack.received_info
   void UpdatePacketInformationReceivedByPeer(
       const QuicAckFrame& incoming_ack);
   // Updates internal state based in incoming_ack.sent_info
   void UpdatePacketInformationSentByPeer(const QuicAckFrame& incoming_ack);
 
-  QuicConnectionHelperInterface* helper() { return helper_; }
+  QuicConnectionHelperInterface* helper() { return helper_.get(); }
 
  private:
   friend class test::QuicConnectionPeer;
 
   // Packets which have not been written to the wire.
   // Owns the QuicPacket* packet.
   struct QueuedPacket {
     QueuedPacket(QuicPacketSequenceNumber sequence_number,
                  QuicPacket* packet,
                  bool has_retransmittable_data)
@@ skipping 69 matching lines @@
   void UpdateOutgoingAck();
 
   void MaybeSendAckInResponseToPacket();
 
   // Get the FEC group associate with the last processed packet.
   QuicFecGroup* GetFecGroup();
 
   // Closes any FEC groups protecting packets before |sequence_number|.
   void CloseFecGroupsBefore(QuicPacketSequenceNumber sequence_number);
 
-  QuicConnectionHelperInterface* helper_;
+  scoped_ptr<QuicConnectionHelperInterface> helper_;
   QuicFramer framer_;
   const QuicClock* clock_;
   QuicRandom* random_generator_;
 
   const QuicGuid guid_;
   // Address on the last successfully processed packet received from the
   // client.
   IPEndPoint self_address_;
   IPEndPoint peer_address_;
   // Address on the last(currently being processed) packet received. Not
@@ skipping 91 matching lines @@
   bool received_truncated_ack_;
 
   bool send_ack_in_response_to_packet_;
 
   DISALLOW_COPY_AND_ASSIGN(QuicConnection);
 };
 
 }  // namespace net
 
 #endif  // NET_QUIC_QUIC_CONNECTION_H_