QUIC varz to track measured and predicted bandwidth and rtt histograms

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 42 matching lines @@
                             QuicPacketSequenceNumber sequence_number,
                             QuicByteCount bytes,
                             HasRetransmittableData is_retransmittable) OVERRIDE;
   virtual void OnRetransmissionTimeout(bool packets_retransmitted) OVERRIDE;
   virtual void RevertRetransmissionTimeout() OVERRIDE;
   virtual QuicTime::Delta TimeUntilSend(
       QuicTime now,
       QuicByteCount bytes_in_flight,
       HasRetransmittableData has_retransmittable_data) const OVERRIDE;
   virtual QuicBandwidth BandwidthEstimate() const OVERRIDE;
+  virtual bool HasReliableBandwidthEstimate() const OVERRIDE;
   virtual QuicTime::Delta RetransmissionDelay() const OVERRIDE;
   virtual QuicByteCount GetCongestionWindow() const OVERRIDE;
   // End implementation of SendAlgorithmInterface.
 
  private:
   friend class test::TcpCubicSenderPeer;
 
   // TODO(ianswett): Remove these and migrate to OnCongestionEvent.
   void OnPacketAcked(QuicPacketSequenceNumber acked_sequence_number,
                      QuicByteCount acked_bytes,
@@ skipping 61 matching lines @@
 
   // Maximum number of outstanding packets for tcp.
   QuicTcpCongestionWindow max_tcp_congestion_window_;
 
   DISALLOW_COPY_AND_ASSIGN(TcpCubicSender);
 };
 
 }  // namespace net
 
 #endif  // NET_QUIC_CONGESTION_CONTROL_TCP_CUBIC_SENDER_H_