Update from https://crrev.com/306655

net/quic/quic_unacked_packet_map.h

 // 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.
 
 #ifndef NET_QUIC_QUIC_UNACKED_PACKET_MAP_H_
 #define NET_QUIC_QUIC_UNACKED_PACKET_MAP_H_
 
 #include <deque>
 
 #include "net/quic/quic_protocol.h"
@@ skipping 20 matching lines @@
                      TransmissionType transmission_type,
                      QuicTime sent_time,
                      QuicByteCount bytes_sent,
                      bool set_in_flight);
 
   // Returns true if the packet |sequence_number| is unacked.
   bool IsUnacked(QuicPacketSequenceNumber sequence_number) const;
 
   // Sets the nack count to the max of the current nack count and |min_nacks|.
   void NackPacket(QuicPacketSequenceNumber sequence_number,
-                  size_t min_nacks);
+                  QuicPacketCount min_nacks);
 
   // Marks |sequence_number| as no longer in flight.
   void RemoveFromInFlight(QuicPacketSequenceNumber sequence_number);
 
   // Returns true if the unacked packet |sequence_number| has retransmittable
   // frames.  This will return false if the packet has been acked, if a
   // previous transmission of this packet was ACK'd, or if this packet has been
   // retransmitted as with different sequence number, or if the packet never
   // had any retransmittable packets in the first place.
   bool HasRetransmittableFrames(QuicPacketSequenceNumber sequence_number) const;
@@ skipping 105 matching lines @@
   // retransmitted, this map will contain entries for both the old and the new
   // packet. The old packet's retransmittable frames entry will be nullptr,
   // while the new packet's entry will contain the frames to retransmit.
   // If the old packet is acked before the new packet, then the old entry will
   // be removed from the map and the new entry's retransmittable frames will be
   // set to nullptr.
   UnackedPacketMap unacked_packets_;
   // The packet at the 0th index of unacked_packets_.
   QuicPacketSequenceNumber least_unacked_;
 
-  size_t bytes_in_flight_;
+  QuicByteCount bytes_in_flight_;
   // Number of retransmittable crypto handshake packets.
   size_t pending_crypto_packet_count_;
 
   DISALLOW_COPY_AND_ASSIGN(QuicUnackedPacketMap);
 };
 
 }  // namespace net
 
 #endif  // NET_QUIC_QUIC_UNACKED_PACKET_MAP_H_