Adds a varz variable to track the fraction of times we end up in cubic

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 37 matching lines @@
   uint32 packets_dropped;  // duplicate or less than least unacked.
   uint32 crypto_retransmit_count;
   uint32 loss_timeout_count;  // Count of times the loss detection alarm fired.
   uint32 tlp_count;
   uint32 rto_count;
 
   uint32 rtt;  // In microseconds
   uint64 estimated_bandwidth;
 
   // The following stats are used only in TcpCubicSender.
+  // Total amount of cwnd increase by TCPCubic in congestion avoidance.
+  uint32 cwnd_increase_congestion_avoidance;
   // Total amount of cwnd increase by TCPCubic in cubic mode.
   uint32 cwnd_increase_cubic_mode;
-  // Total amount of cwnd increase by TCPCubic in reno mode. This includes
-  // cwnd increases that actually happened in cubic mode, but where reno mode
-  // would have yielded the same increase.
-  uint32 cwnd_increase_reno_mode;
   // TODO(satyamshekhar): Add window_size, mss and mtu.
 };
 
 }  // namespace net
 
 #endif  // NET_QUIC_QUIC_CONNECTION_STATS_H_