Minor change to QUIC's retransmission to not link old retransmissions

net/quic/quic_unacked_packet_map.h

 // Copyright 2014 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 NET_QUIC_QUIC_UNACKED_PACKET_MAP_H_
 #define NET_QUIC_QUIC_UNACKED_PACKET_MAP_H_
 
 #include <deque>
 
 #include "net/quic/quic_protocol.h"
@@ skipping 107 matching lines @@
   bool HasMultipleInFlightPackets() const;
 
   // Returns true if there are any pending crypto packets.
   bool HasPendingCryptoPackets() const;
 
   // Removes any retransmittable frames from this transmission or an associated
   // transmission.  It removes now useless transmissions, and disconnects any
   // other packets from other transmissions.
   void RemoveRetransmittability(QuicPacketSequenceNumber sequence_number);
 
+  // Removes any other retransmissions and marks all transmissions unackable.
+  void RemoveAckability(TransmissionInfo* info);
+
   // Increases the largest observed.  Any packets less or equal to
   // |largest_acked_packet| are discarded if they are only for the RTT purposes.
   void IncreaseLargestObserved(QuicPacketSequenceNumber largest_observed);
 
   // Remove any packets no longer needed for retransmission, congestion, or
   // RTT measurement purposes.
   void RemoveObsoletePackets();
 
  private:
   void MaybeRemoveRetransmittableFrames(TransmissionInfo* transmission_info);
@@ skipping 24 matching lines @@
   size_t bytes_in_flight_;
   // Number of retransmittable crypto handshake packets.
   size_t pending_crypto_packet_count_;
 
   DISALLOW_COPY_AND_ASSIGN(QuicUnackedPacketMap);
 };
 
 }  // namespace net
 
 #endif  // NET_QUIC_QUIC_UNACKED_PACKET_MAP_H_