Update from https://crrev.com/305340

net/quic/quic_protocol.h

 // Copyright (c) 2012 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.
 
 #ifndef NET_QUIC_QUIC_PROTOCOL_H_
 #define NET_QUIC_QUIC_PROTOCOL_H_
 
 #include <stddef.h>
 #include <limits>
 #include <list>
@@ skipping 1081 matching lines @@
   size_t nack_count;
   // Reason why this packet was transmitted.
   TransmissionType transmission_type;
   // Stores the sequence numbers of all transmissions of this packet.
   // Must always be nullptr or have multiple elements.
   SequenceNumberList* all_transmissions;
   // In flight packets have not been abandoned or lost.
   bool in_flight;
   // True if the packet can never be acked, so it can be removed.
   bool is_unackable;
+  // True if the packet is an FEC packet.
+  bool is_fec_packet;
 };
 
 }  // namespace net
 
 #endif  // NET_QUIC_QUIC_PROTOCOL_H_