Deprecate FLAGS_quic_simplify_loss_detection.

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 <stdint.h>
 
@@ skipping 1422 matching lines @@
                    int num_padding_bytes);
 
   TransmissionInfo(const TransmissionInfo& other);
 
   ~TransmissionInfo();
 
   QuicFrames retransmittable_frames;
   EncryptionLevel encryption_level;
   QuicPacketNumberLength packet_number_length;
   QuicPacketLength bytes_sent;
-  uint16_t nack_count;
   QuicTime sent_time;
   // Reason why this packet was transmitted.
   TransmissionType transmission_type;
   // 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.  Occurs when
   // a packet is never sent, after it is acknowledged once, or if it's a crypto
   // packet we never expect to receive an ack for.
   bool is_unackable;
   // True if the packet contains stream data from the crypto stream.
@@ skipping 43 matching lines @@
       : iov(iov), iov_count(iov_count), total_length(total_length) {}
 
   const struct iovec* iov;
   const int iov_count;
   const size_t total_length;
 };
 
 }  // namespace net
 
 #endif  // NET_QUIC_QUIC_PROTOCOL_H_