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

net/quic/quic_connection_stats.cc

Index: net/quic/quic_connection_stats.cc
diff --git a/net/quic/quic_connection_stats.cc b/net/quic/quic_connection_stats.cc
index 10425ded048f39c2d190d2b9ef78583e1e47f123..4ab521f252e76fb38b398dca24bbc8bd7ce00ab6 100644
--- a/net/quic/quic_connection_stats.cc
+++ b/net/quic/quic_connection_stats.cc
@@ -29,7 +29,6 @@ QuicConnectionStats::QuicConnectionStats()
       loss_timeout_count(0),
       tlp_count(0),
       rto_count(0),
-      spurious_rto_count(0),
       min_rtt_us(0),
       srtt_us(0),
       max_packet_size(0),
@@ -38,8 +37,6 @@ QuicConnectionStats::QuicConnectionStats()
       max_sequence_reordering(0),
       max_time_reordering_us(0),
       tcp_loss_events(0),
-      cwnd_increase_congestion_avoidance(0),
-      cwnd_increase_cubic_mode(0),
       connection_creation_time(QuicTime::Zero()) {
 }
 
@@ -66,7 +63,6 @@ ostream& operator<<(ostream& os, const QuicConnectionStats& s) {
      << ", crypto retransmit count: " << s.crypto_retransmit_count
      << ", tlp count: " << s.tlp_count
      << ", rto count: " << s.rto_count
-     << ", spurious_rto_count:" << s.spurious_rto_count
      << ", min_rtt(us): " << s.min_rtt_us
      << ", srtt(us): " << s.srtt_us
      << ", max packet size: " << s.max_packet_size
@@ -75,10 +71,6 @@ ostream& operator<<(ostream& os, const QuicConnectionStats& s) {
      << ", packets reordered: " << s.packets_reordered
      << ", max sequence reordering: " << s.max_sequence_reordering
      << ", max time reordering(us): " << s.max_time_reordering_us
-     << ", total amount of cwnd increase in TCPCubic, in congestion avoidance: "
-     << s.cwnd_increase_congestion_avoidance
-     << ", amount of cwnd increase in TCPCubic, in cubic mode: "
-     << s.cwnd_increase_cubic_mode
      << "}\n";
   return os;
 }