Enable trendline experiment and bayesian bitrate estimator experiment by default.

webrtc/modules/congestion_controller/delay_based_bwe.h

Index: webrtc/modules/congestion_controller/delay_based_bwe.h
diff --git a/webrtc/modules/congestion_controller/delay_based_bwe.h b/webrtc/modules/congestion_controller/delay_based_bwe.h
index 5ae60f7d21255480eb95fe2ebb65c64087f60434..a88a176f847322810e4bc3ee1b85a931a6b3a3ef 100644
--- a/webrtc/modules/congestion_controller/delay_based_bwe.h
+++ b/webrtc/modules/congestion_controller/delay_based_bwe.h
@@ -89,14 +89,12 @@ class DelayBasedBwe {
                       int64_t now_ms,
                       rtc::Optional<uint32_t> acked_bitrate_bps,
                       uint32_t* target_bitrate_bps);
-  const bool in_trendline_experiment_;
   const bool in_median_slope_experiment_;

[terelius, 2017/03/28 12:18:21]

I think we can remove the median slope experiment too. Do you want to do it in
the same CL or should I make a follow up CL? 

[stefan-webrtc, 2017/03/30 08:30:47]

Done.

 
   rtc::ThreadChecker network_thread_;
   RtcEventLog* const event_log_;
   const Clock* const clock_;
   std::unique_ptr<InterArrival> inter_arrival_;
-  std::unique_ptr<OveruseEstimator> kalman_estimator_;
   std::unique_ptr<TrendlineEstimator> trendline_estimator_;
   std::unique_ptr<MedianSlopeEstimator> median_slope_estimator_;
   OveruseDetector detector_;