Make the BWE threshold adaptive.

webrtc/modules/remote_bitrate_estimator/test/bwe.h

 /*
  *  Copyright (c) 2015 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 62 matching lines @@
  private:
   // Pop oldest element from the back of the list and remove it from the map.
   void RemoveTail();
   // Add new element to the front of the list and insert it in the map.
   void UpdateHead(PacketIdentifierNode* new_head);
   size_t capacity_;
   std::map<uint16_t, PacketNodeIt> map_;
   std::list<PacketIdentifierNode*> list_;
 };
 
-const int kMinBitrateKbps = 150;
+const int kMinBitrateKbps = 20;
 const int kMaxBitrateKbps = 3000;
 
 class BweSender : public Module {
  public:
   BweSender() {}
   virtual ~BweSender() {}
 
   virtual int GetFeedbackIntervalMs() const = 0;
   virtual void GiveFeedback(const FeedbackPacket& feedback) = 0;
   virtual void OnPacketsSent(const Packets& packets) = 0;
@@ skipping 38 matching lines @@
                            BitrateObserver* observer,
                            Clock* clock);
 
 BweReceiver* CreateBweReceiver(BandwidthEstimatorType type,
                                int flow_id,
                                bool plot);
 }  // namespace bwe
 }  // namespace testing
 }  // namespace webrtc
 #endif  // WEBRTC_MODULES_REMOTE_BITRATE_ESTIMATOR_TEST_BWE_H_