Deprecate FLAGS_quic_reloadable_flag_quic_remove_multipath_bit.

net/quic/core/quic_packets.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_CORE_QUIC_PACKETS_H_
 #define NET_QUIC_CORE_QUIC_PACKETS_H_
 
 #include <cstdint>
 #include <limits>
 #include <list>
@@ skipping 46 matching lines @@
 
 struct QUIC_EXPORT_PRIVATE QuicPacketPublicHeader {
   QuicPacketPublicHeader();
   QuicPacketPublicHeader(const QuicPacketPublicHeader& other);
   ~QuicPacketPublicHeader();
 
   // Universal header. All QuicPacket headers will have a connection_id and
   // public flags.
   QuicConnectionId connection_id;
   QuicConnectionIdLength connection_id_length;
-  // TODO(fayang): Remove multipath_flag when deprecating
-  // quic_reloadable_flag_quic_remove_multipath_bit.
-  bool multipath_flag;
   bool reset_flag;
   bool version_flag;
   QuicPacketNumberLength packet_number_length;
   QuicVersionVector versions;
   // nonce contains an optional, 32-byte nonce value. If not included in the
   // packet, |nonce| will be empty.
   DiversificationNonce* nonce;
 };
 
 // Header for Data packets.
@@ skipping 167 matching lines @@
 QUIC_EXPORT_PRIVATE void ClearSerializedPacket(
     SerializedPacket* serialized_packet);
 
 // Allocates a new char[] of size |packet.encrypted_length| and copies in
 // |packet.encrypted_buffer|.
 QUIC_EXPORT_PRIVATE char* CopyBuffer(const SerializedPacket& packet);
 
 }  // namespace net
 
 #endif  // NET_QUIC_CORE_QUIC_PACKETS_H_