Deprecate disabled FLAGS_quic_reloadable_flag_quic_bbr_fix_conservation in the false state.

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 173 matching lines @@
 
 // Threshold multiplier below which delivery is considered slow.
 QUIC_FLAG(double, FLAGS_quic_bbr_slow_delivery_threshold_multiplier, 0.5f)
 
 // If true, update state if trailing headers with a :final-offset key are
 // received for a previously closed QUIC stream.
 QUIC_FLAG(bool,
           FLAGS_quic_reloadable_flag_quic_final_offset_from_trailers,
           false)
 
-// Fix the algorithm used by packet conservation.
-QUIC_FLAG(bool, FLAGS_quic_reloadable_flag_quic_bbr_fix_conservation, false)
-
 // If enabled, use refactored stream creation methods.
 QUIC_FLAG(bool, FLAGS_quic_reloadable_flag_quic_refactor_stream_creation, false)
 
 // A second take on fixing QUIC BBR packet conservation.
 QUIC_FLAG(bool, FLAGS_quic_reloadable_flag_quic_bbr_fix_conservation2, false)
 
 // If true, GFEs generate and validate source address token using the actual
 // client IP for proxied session.
 QUIC_FLAG(bool,
           FLAGS_quic_reloadable_flag_quic_use_client_address_for_stk_in_proxy,
           false)
 
 // If true, export a varz mapping QUIC non 0-rtt handshake with corresponding
 // frontend service.
 QUIC_FLAG(bool, FLAGS_quic_reloadable_flag_quic_account_handshake, false)
 
 // Allows the 3RTO QUIC connection option to close a QUIC connection after
 // 3RTOs if there are no open streams.
 QUIC_FLAG(bool, FLAGS_quic_reloadable_flag_quic_enable_3rtos, false)
 
 // If true, enable experiment for testing PCC congestion-control.
 QUIC_FLAG(bool, FLAGS_quic_reloadable_flag_quic_enable_pcc, false)
 
 // If true, enable QUIC v40.
 QUIC_FLAG(bool, FLAGS_quic_enable_version_40, false)