Deprecate --quic_ignore_invalid_error_code.

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 77 matching lines @@
 // If true, the QUIC dispatcher will directly send version negotiation packets
 // without needing to create a QUIC session first.
 bool FLAGS_quic_stateless_version_negotiation = true;
 
 // If true, QUIC connections will defer responding to ACKs to their send alarms.
 bool FLAGS_quic_connection_defer_ack_response = true;
 
 // Resend 0RTT requests in response to an REJ that re-establishes encryption.
 bool FLAGS_quic_reply_to_rej = true;
 
-// If true, QuicFramer will ignore invalid error codes when processing GoAway,
-// ConnectionClose, and RstStream frames.
-bool FLAGS_quic_ignore_invalid_error_code = true;
-
 // If true, QUIC connections can do bandwidth resumption with an initial window
 // of < 10 packets.
 bool FLAGS_quic_no_lower_bw_resumption_limit = true;
 
 // Limit the ruction of slow start large reduction to 1/2 the current CWND once
 // the initial flight has been acked.
 bool FLAGS_quic_sslr_limit_reduction = true;
 
 // Simplify QUIC's loss detection by combining time and nack based portions.
 bool FLAGS_quic_simplify_loss_detection = true;
@@ skipping 14 matching lines @@
 // Add the ability for QUIC's time based loss detection to increase it's
 // threshold after spurious losses.
 bool FLAGS_quic_adaptive_loss_recovery = true;
 
 // If true, enable auto tuning by default (server side).
 bool FLAGS_quic_enable_autotune_by_default = true;
 
 // Use largest acked in the most recent ack instead of largest acked ever in
 // loss recovery.
 bool FLAGS_quic_loss_recovery_use_largest_acked = true;