relnote: Deprecate FLAGS_quic_dont_write_when_flow_unblocked.

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"
 
 bool FLAGS_quic_allow_oversized_packets_for_test = false;
 
 // When true, the use time based loss detection instead of nack.
 bool FLAGS_quic_use_time_loss_detection = false;
@@ skipping 35 matching lines @@
 // If true, flow controller may grow the receive window size if necessary.
 bool FLAGS_quic_auto_tune_receive_window = true;
 
 // Enables server-side path MTU discovery in QUIC.
 bool FLAGS_quic_do_path_mtu_discovery = true;
 
 // Process QUIC frames as soon as they're parsed, instead of waiting for the
 // packet's parsing to complete.
 bool FLAGS_quic_process_frames_inline = true;
 
-// No longer call OnCanWrite when connection level flow control unblocks in
-// QuicSession.
-bool FLAGS_quic_dont_write_when_flow_unblocked = true;
-
 // If true, client IP migration is allowed in QUIC.
 bool FLAGS_quic_allow_ip_migration = true;
 
 // Estimate that only 60% of QUIC's receive buffer is usable as opposed to 95%.
 bool FLAGS_quic_use_conservative_receive_buffer = true;
 
 // Limits QUIC's max CWND to 200 packets.
 bool FLAGS_quic_limit_max_cwnd = true;
 
 // If true, instead of enforcing a fixed limit of 200 between the last
 // client-created stream ID and the next one, calculate the difference based on
 // get_max_open_streams().
 bool FLAGS_exact_stream_id_delta = true;
 
 // If true, require handshake confirmation for QUIC connections, functionally
 // disabling 0-rtt handshakes.
 // TODO(rtenneti): Enable this flag after fixing tests.
 bool FLAGS_quic_require_handshake_confirmation = false;
 
 // Disables special treatment of truncated acks, since older retransmissions are
 // proactively discarded in QUIC.
 bool FLAGS_quic_disable_truncated_ack_handling = true;
 
 // If true, after a server silo receives a packet from a migrated QUIC
 // client, a GO_AWAY frame is sent to the client.
 bool FLAGS_send_goaway_after_client_migration = true;