Log to RtcEventLog when loss based estimate is changed.

webrtc/modules/bitrate_controller/send_side_bandwidth_estimation.h

Index: webrtc/modules/bitrate_controller/send_side_bandwidth_estimation.h
diff --git a/webrtc/modules/bitrate_controller/send_side_bandwidth_estimation.h b/webrtc/modules/bitrate_controller/send_side_bandwidth_estimation.h
index 84ee882982bdd465ede7b9a3923cea8f6969e984..27df7e5a0837e9fa3d3d3c860cb0a586d779df6e 100644
--- a/webrtc/modules/bitrate_controller/send_side_bandwidth_estimation.h
+++ b/webrtc/modules/bitrate_controller/send_side_bandwidth_estimation.h
@@ -60,22 +60,22 @@ class SendSideBandwidthEstimation {
 
   void UpdateUmaStats(int64_t now_ms, int64_t rtt, int lost_packets);
 
-  // Returns the input bitrate capped to the thresholds defined by the max,
-  // min and incoming bandwidth.
-  uint32_t CapBitrateToThresholds(int64_t now_ms, uint32_t bitrate);
-
   // Updates history of min bitrates.
   // After this method returns min_bitrate_history_.front().second contains the
   // min bitrate used during last kBweIncreaseIntervalMs.
   void UpdateMinHistory(int64_t now_ms);
 
+  // Cap |bitrate_bps| to [min_bitrate_configured_, max_bitrate_configured_] and
+  // set |current_bitrate_bps_| to the capped value and updates the event log.
+  void CapBitrateToThresholds(int64_t now_ms, uint32_t bitrate_bps);
+
   std::deque<std::pair<int64_t, uint32_t> > min_bitrate_history_;
 
   // incoming filters
   int lost_packets_since_last_loss_update_Q8_;
   int expected_packets_since_last_loss_update_;
 
-  uint32_t bitrate_;
+  uint32_t current_bitrate_bps_;
   uint32_t min_bitrate_configured_;
   uint32_t max_bitrate_configured_;
   int64_t last_low_bitrate_log_ms_;