QUIC-local change to extend per-connection stats. Extending

net/quic/congestion_control/tcp_cubic_sender.cc

 // Copyright (c) 2012 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/congestion_control/tcp_cubic_sender.h"
 
 #include <algorithm>
 
 #include "base/metrics/histogram.h"
 
@@ skipping 16 matching lines @@
 const int kInitialRttMs = 100;  // At a typical RTT 100 ms.
 const float kAlpha = 0.125f;
 const float kOneMinusAlpha = (1 - kAlpha);
 const float kBeta = 0.25f;
 const float kOneMinusBeta = (1 - kBeta);
 };  // namespace
 
 TcpCubicSender::TcpCubicSender(
     const QuicClock* clock,
     bool reno,
-    QuicTcpCongestionWindow max_tcp_congestion_window)
+    QuicTcpCongestionWindow max_tcp_congestion_window,
+    QuicConnectionStats* stats)
     : hybrid_slow_start_(clock),
-      cubic_(clock),
+      cubic_(clock, stats),
       reno_(reno),
       congestion_window_count_(0),
       receive_window_(kDefaultReceiveWindow),
       bytes_in_flight_(0),
       prr_out_(0),
       prr_delivered_(0),
       ack_count_since_loss_(0),
       bytes_in_flight_before_loss_(0),
       update_end_sequence_number_(true),
       end_sequence_number_(0),
@@ skipping 312 matching lines @@
       hybrid_slow_start_.Reset(end_sequence_number_);
     }
     hybrid_slow_start_.Update(rtt, delay_min_);
     if (hybrid_slow_start_.Exit()) {
       slowstart_threshold_ = congestion_window_;
     }
   }
 }
 
 }  // namespace net