Deprecate --gfe2_reloadable_flag_quic_utils_use_fast_incremental_hash.

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 100 matching lines @@
 bool FLAGS_quic_distinguish_incoming_outgoing_streams = true;
 
 // If true, QUIC servers will attempt to validate a client's source
 // address token using the primary config, even if no server config id
 // is present in the client hello.
 bool FLAGS_quic_validate_stk_without_scid = true;
 
 // If true, QUIC will support RFC 7539 variants of ChaCha20 Poly1305.
 bool FLAGS_quic_use_rfc7539 = true;
 
-// If true, use the fast implementation of IncrementalHash/FNV1a_128_Hash.
-bool FLAGS_quic_utils_use_fast_incremental_hash = true;
-
 // If true, require QUIC connections to use a valid server nonce or a non-local
 // strike register.
 bool FLAGS_require_strike_register_or_server_nonce = true;
 
 // 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;
@@ skipping 23 matching lines @@
 // If true, always log the cached network parameters, regardless of whether
 // bandwidth-resumption has been enabled.
 bool FLAGS_quic_log_received_parameters = true;
 
 // If true, QUIC will use newly refactored TCP sender code.
 bool FLAGS_quic_use_new_tcp_sender = true;
 
 // Saves the initial subkey secret in QUIC crypto when deriving keys from the
 // initial premaster secret.
 bool FLAGS_quic_save_initial_subkey_secret = true;