Update from https://crrev.com/306655

net/quic/quic_unacked_packet_map.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_unacked_packet_map.h"
 
 #include "base/logging.h"
 #include "base/stl_util.h"
 #include "net/quic/quic_connection_stats.h"
 #include "net/quic/quic_utils_chromium.h"
@@ skipping 164 matching lines @@
 
 bool QuicUnackedPacketMap::HasRetransmittableFrames(
     QuicPacketSequenceNumber sequence_number) const {
   DCHECK_GE(sequence_number, least_unacked_);
   DCHECK_LT(sequence_number, least_unacked_ + unacked_packets_.size());
   return unacked_packets_[sequence_number - least_unacked_]
              .retransmittable_frames != nullptr;
 }
 
 void QuicUnackedPacketMap::NackPacket(QuicPacketSequenceNumber sequence_number,
-                                      size_t min_nacks) {
+                                      QuicPacketCount min_nacks) {
   DCHECK_GE(sequence_number, least_unacked_);
   DCHECK_LT(sequence_number, least_unacked_ + unacked_packets_.size());
   unacked_packets_[sequence_number - least_unacked_].nack_count =
       max(min_nacks,
           unacked_packets_[sequence_number - least_unacked_].nack_count);
 }
 
 void QuicUnackedPacketMap::RemoveRetransmittability(
     QuicPacketSequenceNumber sequence_number) {
   DCHECK_GE(sequence_number, least_unacked_);
@@ skipping 181 matching lines @@
   TransmissionInfo* info = &unacked_packets_[sequence_number - least_unacked_];
   DCHECK(!info->in_flight);
   DCHECK_NE(0u, info->bytes_sent);
   DCHECK(info->sent_time.IsInitialized());
 
   bytes_in_flight_ += info->bytes_sent;
   info->in_flight = true;
 }
 
 }  // namespace net