Deprecate --quic_include_path_id_in_iv.

net/quic/quic_flags.cc

 // 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.
 
 #include "net/quic/quic_flags.h"
 
 // When true, the use time based loss detection instead of nack.
 bool FLAGS_quic_use_time_loss_detection = false;
 
 // If true, it will return as soon as an error is detected while validating
@@ skipping 59 matching lines @@
 
 // If true, reject any incoming QUIC which does not have the FIXD tag.
 bool FLAGS_quic_require_fix = true;
 
 // If true, headers stream will support receiving PUSH_PROMISE frames.
 bool FLAGS_quic_supports_push_promise = false;
 
 // When turn on, log packet loss into transport connection stats LossEvent.
 bool FLAGS_quic_log_loss_event = true;
 
-// If true, for QUIC authenticated encryption algorithms, last 8 bytes
-// of IV comprise packet path id and lower 7 bytes of packet number.
-bool FLAGS_quic_include_path_id_in_iv = true;
-
 // If true, make sure new incoming streams correctly cede to higher
 // priority (or batch) streams when doing QUIC writes.
 bool FLAGS_quic_cede_correctly = true;
 
 // If on, max number of incoming and outgoing streams will be different.
 // Incoming will be a little higher than outgoing to tolerate race condition.
 bool FLAGS_quic_different_max_num_open_streams = true;
 
 // If true, QUIC should correctly report if it supports ChaCha20. Otherwise,
 // QUIC will lie and claim that it does not support ChaCha20. The primary use
@@ skipping 44 matching lines @@
 // Enable a connection option allowing connections to time out if more than 5
 // consecutive RTOs are sent.
 bool FLAGS_quic_enable_rto_timeout = true;
 
 // Do not limit the max CWND to 200 packets in QUIC.
 bool FLAGS_quic_dont_limit_max_cwnd = true;
 
 // Don't copy QuicAckFrame or QuicStopWaitingFrame into the
 // QuicPacketGenerator.
 bool FLAGS_quic_dont_copy_acks = true;