Add a kBYTE congestion option to QUIC to negotiate the TcpCubicBytesSender.

net/quic/congestion_control/tcp_cubic_bytes_sender.cc

 // Copyright (c) 2015 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_bytes_sender.h"
 
 #include <algorithm>
 
 #include "net/quic/congestion_control/prr_sender.h"
 #include "net/quic/congestion_control/rtt_stats.h"
@@ skipping 328 matching lines @@
   if (!packets_retransmitted) {
     return;
   }
   cubic_.Reset();
   hybrid_slow_start_.Restart();
   slowstart_threshold_ = congestion_window_ / 2;
   congestion_window_ = min_congestion_window_;
 }
 
 CongestionControlType TcpCubicBytesSender::GetCongestionControlType() const {
-  return reno_ ? kReno : kCubic;
+  return reno_ ? kRenoBytes : kCubicBytes;
 }
 
 }  // namespace net