Deprecate FLAGS_quic_never_write_unencrypted_data now that the unit tests all pass.

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, it will return as soon as an error is detected while validating
@@ skipping 38 matching lines @@
 
 // If true, QUIC will measure head of line (HOL) blocking due between
 // streams due to packet losses on the headers stream.  The
 // measurements will be surfaced via UMA histogram
 // Net.QuicSession.HeadersHOLBlockedTime.
 QUIC_FLAG(bool, FLAGS_quic_measure_headers_hol_blocking_time, true)
 
 // If true, disable pacing in QUIC.
 QUIC_FLAG(bool, FLAGS_quic_disable_pacing_for_perf_tests, false)
 
-// If true, Close the connection instead of writing unencrypted stream data.
-QUIC_FLAG(bool, FLAGS_quic_never_write_unencrypted_data, true)
-
 // If true, QUIC connections can do bandwidth resumption with an initial window
 // of < 10 packets.
 QUIC_FLAG(bool, FLAGS_quic_no_lower_bw_resumption_limit, true)
 
 // Only set one alarm for sending at once, either the send alarm or
 // retransmission alarm.  Disabled because it breaks QUIC time loss detection.
 QUIC_FLAG(bool, FLAGS_quic_only_one_sending_alarm, false)
 
 // If true, QUIC public reset packets will have the \"pre-v33\" public header
 // flags.
@@ skipping 93 matching lines @@
 // skew.
 QUIC_FLAG(bool, FLAGS_quic_send_scfg_ttl, 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, false)
 
 // If true, disables QUIC version less than 34.
 QUIC_FLAG(bool, FLAGS_quic_disable_pre_34, false)