Not used in production. Add InRecovery() method to QUIC send algorithm

net/quic/quic_sustained_bandwidth_recorder.cc

 // Copyright (c) 2014 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/quic_sustained_bandwidth_recorder.h"
 
 #include "base/logging.h"
 #include "net/quic/quic_bandwidth.h"
 #include "net/quic/quic_time.h"
 
 namespace net {
 
 QuicSustainedBandwidthRecorder::QuicSustainedBandwidthRecorder()
     : has_estimate_(false),
       is_recording_(false),
+      bandwidth_estimate_recorded_during_slow_start_(false),
       bandwidth_estimate_(QuicBandwidth::Zero()),
       max_bandwidth_estimate_(QuicBandwidth::Zero()),
       max_bandwidth_timestamp_(0),
       start_time_(QuicTime::Zero()) {}
 
 void QuicSustainedBandwidthRecorder::RecordEstimate(bool is_reliable_estimate,
+                                                    bool in_slow_start,
                                                     QuicBandwidth bandwidth,
                                                     QuicTime estimate_time,
                                                     QuicWallTime wall_time,
                                                     QuicTime::Delta srtt) {
   if (!is_reliable_estimate) {
     is_recording_ = false;
     DVLOG(1) << "Stopped recording due to unreliable estimate at: "
              << estimate_time.ToDebuggingValue();
     return;
   }
 
   if (!is_recording_) {
     // This is the first estimate of a new recording period.
     start_time_ = estimate_time;
     is_recording_ = true;
     DVLOG(1) << "Started recording at: " << start_time_.ToDebuggingValue();
     return;
   }
 
   // If we have been recording for at least 3 * srtt, then record the latest
   // bandwidth estimate as a valid sustained bandwidth estimate.
   if (estimate_time.Subtract(start_time_) >= srtt.Multiply(3)) {
     has_estimate_ = true;
+    bandwidth_estimate_recorded_during_slow_start_ = in_slow_start;
     bandwidth_estimate_ = bandwidth;
     DVLOG(1) << "New sustained bandwidth estimate (KBytes/s): "
              << bandwidth_estimate_.ToKBytesPerSecond();
   }
 
   // Check for an increase in max bandwidth.
   if (bandwidth > max_bandwidth_estimate_) {
     max_bandwidth_estimate_ = bandwidth;
     max_bandwidth_timestamp_ = wall_time.ToUNIXSeconds();
     DVLOG(1) << "New max bandwidth estimate (KBytes/s): "
              << max_bandwidth_estimate_.ToKBytesPerSecond();
   }
 }
 
 }  // namespace net