deprecate FLAGS_graceful_emsgsize_on_mtu_probe

net/quic/core/quic_flags_list.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.
 
 // This file intentionally does not have header guards, it's included
 // inside a macro to generate values.
 
 // This file contains the list of QUIC protocol flags.
 
 // If true, QUIC BBR congestion control may be enabled via Finch and/or via QUIC
@@ skipping 53 matching lines @@
 // If true, use async codepaths to invoke ProofSource::GetProof.
 QUIC_FLAG(bool, FLAGS_enable_async_get_proof, false)
 
 // If true, requires handshake confirmations for all QUIC handshakes with
 // versions less than 33.
 QUIC_FLAG(bool, FLAGS_quic_require_handshake_confirmation_pre33, false)
 
 // If true, defer creation of new connection till its CHLO arrives.
 QUIC_FLAG(bool, FLAGS_quic_buffer_packet_till_chlo, true)
 
-// Disable MTU probing if MTU probe causes ERR_MSG_TOO_BIG instead of aborting
-// the connection.
-QUIC_FLAG(bool, FLAGS_graceful_emsgsize_on_mtu_probe, true)
-
 // If true, only open limited number of quic sessions per epoll event. Leave the
 // rest to next event. This flag can be turned on only if
 // --quic_buffer_packet_till_chlo is true.
 QUIC_FLAG(bool, FLAGS_quic_limit_num_new_sessions_per_epoll_loop, true)
 
 // If true, lazy allocate and early release memeory used in
 // QuicStreamSequencerBuffer to buffer incoming data.
 QUIC_FLAG(bool, FLAGS_quic_reduce_sequencer_buffer_memory_life_time, true)
 
 // If true, disables QUIC version less than 34.
@@ skipping 68 matching lines @@
 // If true, limits QUIC uncompressed headers to 16K.
 QUIC_FLAG(bool, FLAGS_quic_limit_uncompressed_headers, false)
 
 // If true, release headers stream\'s sequencer buffer when there is no active
 // stream.
 QUIC_FLAG(bool, FLAGS_quic_headers_stream_release_sequencer_buffer, false)
 
 // If enabled, fix double call of
 // InsertLocallyClosedStreamsHighestOffset in ResetPromised.
 QUIC_FLAG(bool, FLAGS_quic_bugfix_reset_promised, true)