Cleanup of QUIC's TransmissionInfo constructor to make more fields const

net/quic/quic_unacked_packet_map.cc

Index: net/quic/quic_unacked_packet_map.cc
diff --git a/net/quic/quic_unacked_packet_map.cc b/net/quic/quic_unacked_packet_map.cc
index f45e44234a7eb7bc2f23c4d61fc7e60a4a865d6b..be665d2228ef683a47326fe90a8249d33ffb5466 100644
--- a/net/quic/quic_unacked_packet_map.cc
+++ b/net/quic/quic_unacked_packet_map.cc
@@ -50,11 +50,8 @@ void QuicUnackedPacketMap::AddSentPacket(
   }
 
   TransmissionInfo info(packet.retransmittable_frames,
-                        packet.sequence_number_length,
-                        transmission_type,
-                        sent_time);
-  info.is_fec_packet = packet.is_fec_packet;
-
+                        packet.sequence_number_length, transmission_type,
+                        sent_time, bytes_sent, packet.is_fec_packet);
   if (old_sequence_number == 0) {
     if (packet.retransmittable_frames != nullptr &&
         packet.retransmittable_frames->HasCryptoHandshake() == IS_HANDSHAKE) {
@@ -68,7 +65,6 @@ void QuicUnackedPacketMap::AddSentPacket(
   largest_sent_packet_ = sequence_number;
   if (set_in_flight) {
     bytes_in_flight_ += bytes_sent;
-    info.bytes_sent = bytes_sent;
     info.in_flight = true;
   }
   unacked_packets_.push_back(info);
@@ -94,7 +90,6 @@ void QuicUnackedPacketMap::TransferRetransmissionInfo(
   DCHECK_GE(new_sequence_number, least_unacked_ + unacked_packets_.size());
   DCHECK_NE(NOT_RETRANSMISSION, transmission_type);
 
-  // TODO(ianswett): Discard and lose the packet lazily instead of immediately.
   TransmissionInfo* transmission_info =
       &unacked_packets_.at(old_sequence_number - least_unacked_);
   RetransmittableFrames* frames = transmission_info->retransmittable_frames;