Deprecate FLAGS_quic_simplify_loss_detection.

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_bug_tracker.h"
 #include "net/quic/quic_connection_stats.h"
@@ skipping 121 matching lines @@
 }
 
 bool QuicUnackedPacketMap::HasRetransmittableFrames(
     QuicPacketNumber packet_number) const {
   DCHECK_GE(packet_number, least_unacked_);
   DCHECK_LT(packet_number, least_unacked_ + unacked_packets_.size());
   return !unacked_packets_[packet_number - least_unacked_]
               .retransmittable_frames.empty();
 }
 
-void QuicUnackedPacketMap::NackPacket(QuicPacketNumber packet_number,
-                                      uint16_t min_nacks) {
-  DCHECK(!FLAGS_quic_simplify_loss_detection);
-  DCHECK_GE(packet_number, least_unacked_);
-  DCHECK_LT(packet_number, least_unacked_ + unacked_packets_.size());
-  unacked_packets_[packet_number - least_unacked_].nack_count = max(
-      min_nacks, unacked_packets_[packet_number - least_unacked_].nack_count);
-}
-
 void QuicUnackedPacketMap::RemoveRetransmittability(TransmissionInfo* info) {
   while (info->retransmission != 0) {
     const QuicPacketNumber retransmission = info->retransmission;
     info->retransmission = 0;
     info = &unacked_packets_[retransmission - least_unacked_];
   }
   MaybeRemoveRetransmittableFrames(info);
 }
 
 void QuicUnackedPacketMap::RemoveRetransmittability(
@@ skipping 191 matching lines @@
     }
   }
   return false;
 }
 
 QuicPacketNumber QuicUnackedPacketMap::GetLeastUnacked() const {
   return least_unacked_;
 }
 
 }  // namespace net