Close the QUIC connection when non-crypto stream data is written at ENCRYPTION_NONE.

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 104 matching lines @@
 // struct.
 bool FLAGS_quic_track_single_retransmission = true;
 
 // If true, allow each quic stream to write 16k blocks rather than doing a round
 // robin of one packet per session when ack clocked or paced.
 bool FLAGS_quic_batch_writes = true;
 
 // If true, QUIC sessions will write block streams that attempt to write
 // unencrypted data.
 bool FLAGS_quic_block_unencrypted_writes = true;
+
+// If true, Close the connection instead of writing unencrypted stream data.
+bool FLAGS_quic_never_write_unencrypted_data = true;