relnote: quic_supports_push_promise should be disabled by default.

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 102 matching lines @@
 // Close the connection if we ever try to serialized unencrypted FEC.
 bool FLAGS_quic_no_unencrypted_fec = true;
 
 // If true, reject any incoming QUIC which does not have the FIXD tag.
 bool FLAGS_quic_require_fix = true;
 
 // If true, QUIC supports sending trailers from Server to Client.
 bool FLAGS_quic_supports_trailers = true;
 
 // If true, headers stream will support receiving PUSH_PROMISE frames.
-bool FLAGS_quic_supports_push_promise = true;
+bool FLAGS_quic_supports_push_promise = false;

[Ryan Hamilton, 2016/01/10 23:11:12]

Can you chat with buck to make sure we're on the same page about the flag in
chrome.

 
 // Fixes a bug in QUIC_VERSION_26 by always using the primary config when
 // getting the proof of possession.
 bool FLAGS_quic_use_primary_config_for_proof = true;
 
 // Enable counters for incoming/outgoing streams which are used as condition
 // check while creating a new stream.
 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, use the new write blocked list for QUIC.
 bool FLAGS_quic_new_blocked_list = true;
 
 // If true, QUIC will support RFC 7539 variants of ChaCha20 Poly1305.
 bool FLAGS_quic_use_rfc7539 = true;
 
 // If true, drop not awaited QUIC packets before decrypting them.
 bool FLAGS_quic_drop_non_awaited_packets = false;
 
 // If true, use the fast implementation of IncrementalHash/FNV1a_128_Hash.
 bool FLAGS_quic_utils_use_fast_incremental_hash = true;