Remove stats for recording reno vs cubic mode in internal server's varz.

net/quic/quic_connection_stats.h

 // 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.
 
 #ifndef NET_QUIC_QUIC_CONNECTION_STATS_H_
 #define NET_QUIC_QUIC_CONNECTION_STATS_H_
 
 #include <ostream>
 
 #include "base/basictypes.h"
@@ skipping 38 matching lines @@
   QuicPacketCount slowstart_packets_lost;
 
   QuicPacketCount packets_revived;
   QuicPacketCount packets_dropped;  // Duplicate or less than least unacked.
   size_t crypto_retransmit_count;
   // Count of times the loss detection alarm fired.  At least one packet should
   // be lost when the alarm fires.
   size_t loss_timeout_count;
   size_t tlp_count;
   size_t rto_count;  // Count of times the rto timer fired.
-  size_t spurious_rto_count;
 
   int64 min_rtt_us;  // Minimum RTT in microseconds.
   int64 srtt_us;  // Smoothed RTT in microseconds.
   QuicByteCount max_packet_size;
   QuicBandwidth estimated_bandwidth;
 
   // Reordering stats for received packets.
   // Number of packets received out of sequence number order.
   QuicPacketCount packets_reordered;
   // Maximum reordering observed in sequence space.
   QuicPacketSequenceNumber max_sequence_reordering;
   // Maximum reordering observed in microseconds
   int64 max_time_reordering_us;
 
   // The following stats are used only in TcpCubicSender.
   // The number of loss events from TCP's perspective.  Each loss event includes
   // one or more lost packets.
   uint32 tcp_loss_events;
-  // Total amount of cwnd increase by TCPCubic in congestion avoidance.
-  QuicPacketCount cwnd_increase_congestion_avoidance;
-  // Total amount of cwnd increase by TCPCubic in cubic mode.
-  QuicPacketCount cwnd_increase_cubic_mode;
 
   // Creation time, as reported by the QuicClock.
   QuicTime connection_creation_time;
 };
 
 }  // namespace net
 
 #endif  // NET_QUIC_QUIC_CONNECTION_STATS_H_