relnote: Deprecate flag quic_disable_pre_32

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 57 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)
 
-// If true, disables QUIC version less than 32.
-QUIC_FLAG(bool, FLAGS_quic_disable_pre_32, true)
-
 // If true, QUIC will enforce the MTU limit for connections that may require a
 // small MTU.
 QUIC_FLAG(bool, FLAGS_quic_enforce_mtu_limit, false)
 
 // 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
@@ skipping 56 matching lines @@
 QUIC_FLAG(bool, FLAGS_quic_conservative_handshake_retransmits, true)
 
 // If true, buffer packets while parsing public headers instead of parsing down
 // if CHLO is already buffered.
 QUIC_FLAG(bool, FLAGS_quic_buffer_packets_after_chlo, false)
 
 // Previously QUIC didn't register a packet as received until it was fully
 // processed, but now that flow control is implemented, it can be received once
 // decrypted.
 QUIC_FLAG(bool, FLAGS_quic_receive_packet_once_decrypted, false)