Deprecate FLAGS_quic_ack_decimation.

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 23 matching lines @@
 // Of course, there are usually many queries per QUIC connection, so we allow a
 // factor of 3 leeway.
 //
 // Maximum number of connections on the time-wait list. A negative value implies
 // no configured limit.
 int64_t FLAGS_quic_time_wait_list_max_connections = 600000;
 
 // Enables server-side support for QUIC stateless rejects.
 bool FLAGS_enable_quic_stateless_reject_support = true;
 
-// If ture, allow Ack Decimation to be used for QUIC when requested by the
-// client connection option ACKD.
-bool FLAGS_quic_ack_decimation = true;
-
 // This flag is not in use, just to keep consistency for shared code.
 bool FLAGS_quic_always_log_bugs_for_tests = false;
 
 // If true, flow controller may grow the receive window size if necessary.
 bool FLAGS_quic_auto_tune_receive_window = true;
 
 // If true, multipath is enabled for the connection.
 bool FLAGS_quic_enable_multipath = false;
 
 // Limits QUIC's max CWND to 200 packets.
@@ skipping 111 matching lines @@
 // serialized packet when frames are retransmitted.
 bool FLAGS_quic_retransmit_via_onserializedpacket = 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;