Remove unused original transmission stats from QuicAckNotifier.

net/quic/quic_ack_notifier.cc

 // Copyright 2013 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_ack_notifier.h"
 
 #include <set>
 
 #include "base/logging.h"
 #include "base/stl_util.h"
 
 using base::hash_map;
 using std::make_pair;
 
 namespace net {
 
 QuicAckNotifier::PacketInfo::PacketInfo() : packet_payload_size(0) {
 }
 
 QuicAckNotifier::PacketInfo::PacketInfo(int payload_size)
     : packet_payload_size(payload_size) {
 }
 
 QuicAckNotifier::DelegateInterface::DelegateInterface() {}
 
 QuicAckNotifier::DelegateInterface::~DelegateInterface() {}
 
 QuicAckNotifier::QuicAckNotifier(DelegateInterface* delegate)
     : delegate_(delegate),
-      original_packet_count_(0),
-      original_byte_count_(0),
       retransmitted_packet_count_(0),
       retransmitted_byte_count_(0) {
   DCHECK(delegate);
 }
 
 QuicAckNotifier::~QuicAckNotifier() {
 }
 
 void QuicAckNotifier::AddSequenceNumber(
     const QuicPacketSequenceNumber& sequence_number,
     int packet_payload_size) {
   sequence_numbers_.insert(make_pair(sequence_number,
                                      PacketInfo(packet_payload_size)));
-  ++original_packet_count_;
-  original_byte_count_ += packet_payload_size;
 
   DVLOG(1) << "AckNotifier waiting for packet: " << sequence_number;
 }
 
 bool QuicAckNotifier::OnAck(QuicPacketSequenceNumber sequence_number,
                             QuicTime::Delta delta_largest_observed) {
   DCHECK(ContainsKey(sequence_numbers_, sequence_number));
   sequence_numbers_.erase(sequence_number);
   if (IsEmpty()) {
     // We have seen all the sequence numbers we were waiting for, trigger
     // callback notification.
-    delegate_->OnAckNotification(
-        original_packet_count_, original_byte_count_,
-        retransmitted_packet_count_, retransmitted_byte_count_,
-        delta_largest_observed);
+    delegate_->OnAckNotification(retransmitted_packet_count_,
+                                 retransmitted_byte_count_,
+                                 delta_largest_observed);
     return true;
   }
   return false;
 }
 
 void QuicAckNotifier::UpdateSequenceNumber(
     QuicPacketSequenceNumber old_sequence_number,
     QuicPacketSequenceNumber new_sequence_number) {
   DCHECK(!ContainsKey(sequence_numbers_, new_sequence_number));
 
   PacketInfo packet_info;
   auto it = sequence_numbers_.find(old_sequence_number);
   if (it != sequence_numbers_.end()) {
     packet_info = it->second;
     sequence_numbers_.erase(it);
   } else {
     DLOG(DFATAL) << "Old sequence number not found.";
   }
 
   ++retransmitted_packet_count_;
   retransmitted_byte_count_ += packet_info.packet_payload_size;
   sequence_numbers_.insert(make_pair(new_sequence_number, packet_info));
 
   DVLOG(1) << "AckNotifier waiting for packet: " << new_sequence_number
            << " (retransmitted " << old_sequence_number << ").";
 }
 
 };  // namespace net