Make the BWE threshold adaptive.

webrtc/modules/remote_bitrate_estimator/mimd_rate_control.h

 /*
  *  Copyright (c) 2014 The WebRTC project authors. All Rights Reserved.
  *
  *  Use of this source code is governed by a BSD-style license
  *  that can be found in the LICENSE file in the root of the source
  *  tree. An additional intellectual property rights grant can be found
  *  in the file PATENTS.  All contributing project authors may
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
@@ skipping 16 matching lines @@
   // Implements RemoteRateControl.
   RateControlType GetControlType() const override;
   uint32_t GetMinBitrate() const override;
   bool ValidEstimate() const override;
   int64_t GetFeedbackInterval() const override;
   bool TimeToReduceFurther(int64_t time_now,
                            uint32_t incoming_bitrate_bps) const override;
   uint32_t LatestEstimate() const override;
   uint32_t UpdateBandwidthEstimate(int64_t now_ms) override;
   void SetRtt(int64_t rtt) override;
-  RateControlRegion Update(const RateControlInput* input,
-                           int64_t now_ms) override;
+  void Update(const RateControlInput* input, int64_t now_ms) override;
   void SetEstimate(int bitrate_bps, int64_t now_ms) override;
 
  private:
   uint32_t ChangeBitRate(uint32_t current_bit_rate,
                          uint32_t incoming_bit_rate,
                          double delay_factor,
                          int64_t now_ms);
   double RateIncreaseFactor(int64_t now_ms,
                             int64_t last_ms,
                             int64_t reaction_time_ms,
@@ skipping 22 matching lines @@
   int64_t last_change_ms_;
   float beta_;
   int64_t rtt_;
   int64_t time_of_last_log_;
 
   DISALLOW_IMPLICIT_CONSTRUCTORS(MimdRateControl);
 };
 }  // namespace webrtc
 
 #endif // WEBRTC_MODULES_REMOTE_BITRATE_ESTIMATOR_MIMD_RATE_CONTROL_H_