Deprecate FLAGS_quic_track_single_retransmission.

net/quic/quic_protocol.cc

 // 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.
 
 #include "net/quic/quic_protocol.h"
 
 #include "base/stl_util.h"
 #include "net/quic/quic_flags.h"
 #include "net/quic/quic_utils.h"
 
@@ skipping 790 matching lines @@
       packet_number_length(PACKET_1BYTE_PACKET_NUMBER),
       bytes_sent(0),
       nack_count(0),
       sent_time(QuicTime::Zero()),
       transmission_type(NOT_RETRANSMISSION),
       in_flight(false),
       is_unackable(false),
       is_fec_packet(false),
       has_crypto_handshake(false),
       needs_padding(false),
-      all_transmissions(nullptr),
       retransmission(0) {}
 
 TransmissionInfo::TransmissionInfo(EncryptionLevel level,
                                    QuicPacketNumberLength packet_number_length,
                                    TransmissionType transmission_type,
                                    QuicTime sent_time,
                                    QuicPacketLength bytes_sent,
                                    bool is_fec_packet,
                                    bool has_crypto_handshake,
                                    bool needs_padding)
     : encryption_level(level),
       packet_number_length(packet_number_length),
       bytes_sent(bytes_sent),
       nack_count(0),
       sent_time(sent_time),
       transmission_type(transmission_type),
       in_flight(false),
       is_unackable(false),
       is_fec_packet(is_fec_packet),
       has_crypto_handshake(has_crypto_handshake),
       needs_padding(needs_padding),
-      all_transmissions(nullptr),
       retransmission(0) {}
 
 TransmissionInfo::~TransmissionInfo() {}
 
 }  // namespace net