Add logging of delay-based bandwidth estimate.

BUG=webrtc:6423

Review-Url: https://codereview.webrtc.org/2695923004
Cr-Commit-Position: refs/heads/master@{#16663}
diff --git a/webrtc/tools/event_log_visualizer/analyzer.cc b/webrtc/tools/event_log_visualizer/analyzer.cc
index 90eb5b3..f49356e 100644
--- a/webrtc/tools/event_log_visualizer/analyzer.cc
+++ b/webrtc/tools/event_log_visualizer/analyzer.cc
@@ -1133,7 +1133,7 @@
 
   SimulatedClock clock(0);
   NullBitrateController null_controller;
-  TransportFeedbackAdapter feedback_adapter(&clock, &null_controller);
+  TransportFeedbackAdapter feedback_adapter(nullptr, &clock, &null_controller);
   feedback_adapter.InitBwe();
 
   TimeSeries time_series;