Stub for BBRv2, based on TCP congestion feedback frames.

net/quic/congestion_control/send_algorithm_interface.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/send_algorithm_interface.h"
 
 #include "net/quic/congestion_control/fix_rate_sender.h"
 #include "net/quic/congestion_control/tcp_cubic_sender.h"
 #include "net/quic/quic_protocol.h"
 
@@ skipping 11 matching lines @@
     QuicConnectionStats* stats) {
   switch (type) {
     case kTCP:
       return new TcpCubicSender(clock, rtt_stats, kUseReno,
                                 kMaxTcpCongestionWindow, stats);
     case kInterArrival:
       LOG(DFATAL) << "InterArrivalSendAlgorithm no longer supported.";
       return NULL;
     case kFixRate:
       return new FixRateSender(rtt_stats);
+    case kTCPBBR:
+      LOG(DFATAL) << "BbrTcpSender is not supported.";
+      return NULL;
   }
   return NULL;
 }
 
 }  // namespace net