Remove TCP and BBR's max congestion window. No practical change,

net/quic/congestion_control/tcp_cubic_sender.h

 // 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.
 //
 // TCP cubic send side congestion algorithm, emulates the behavior of
 // TCP cubic.
 
 #ifndef NET_QUIC_CONGESTION_CONTROL_TCP_CUBIC_SENDER_H_
 #define NET_QUIC_CONGESTION_CONTROL_TCP_CUBIC_SENDER_H_
 
@@ skipping 13 matching lines @@
 namespace net {
 
 class RttStats;
 
 namespace test {
 class TcpCubicSenderPeer;
 }  // namespace test
 
 class NET_EXPORT_PRIVATE TcpCubicSender : public SendAlgorithmInterface {
  public:
-  // Reno option and max_tcp_congestion_window are provided for testing.
   TcpCubicSender(const QuicClock* clock,
                  const RttStats* rtt_stats,
                  bool reno,
                  QuicPacketCount initial_tcp_congestion_window,
-                 QuicPacketCount max_tcp_congestion_window,
                  QuicConnectionStats* stats);
   ~TcpCubicSender() override;
 
   // Start implementation of SendAlgorithmInterface.
   void SetFromConfig(const QuicConfig& config,
                      bool is_server,
                      bool using_pacing) override;
   bool ResumeConnectionState(
       const CachedNetworkParameters& cached_network_params) override;
   void SetNumEmulatedConnections(int num_connections) override;
@@ skipping 45 matching lines @@
   const RttStats* rtt_stats_;
   QuicConnectionStats* stats_;
 
   // If true, Reno congestion control is used instead of Cubic.
   const bool reno_;
 
   // Number of connections to simulate.
   uint32 num_connections_;
 
   // ACK counter for the Reno implementation.
-  uint64 congestion_window_count_;
+  uint64 num_acked_packets_;
 
   // Track the largest packet that has been sent.
   QuicPacketSequenceNumber largest_sent_sequence_number_;
 
   // Track the largest packet that has been acked.
   QuicPacketSequenceNumber largest_acked_sequence_number_;
 
   // Track the largest sequence number outstanding when a CWND cutback occurs.
   QuicPacketSequenceNumber largest_sent_at_last_cutback_;
 
   // Congestion window in packets.
   QuicPacketCount congestion_window_;
 
   // Slow start congestion window in packets, aka ssthresh.
   QuicPacketCount slowstart_threshold_;
 
   // Whether the last loss event caused us to exit slowstart.
   // Used for stats collection of slowstart_packets_lost
   bool last_cutback_exited_slowstart_;
 
-  // Maximum number of outstanding packets for tcp.
-  QuicPacketCount max_tcp_congestion_window_;
-
   const QuicClock* clock_;
 
   DISALLOW_COPY_AND_ASSIGN(TcpCubicSender);
 };
 
 }  // namespace net
 
 #endif  // NET_QUIC_CONGESTION_CONTROL_TCP_CUBIC_SENDER_H_