Added -show_detector_state which show the detector state in the total bitrate graph.

BUG=none

Review-Url: https://codereview.webrtc.org/2826313004
Cr-Commit-Position: refs/heads/master@{#19020}
diff --git a/webrtc/rtc_tools/event_log_visualizer/analyzer.h b/webrtc/rtc_tools/event_log_visualizer/analyzer.h
index 0c3fa46..ce4868f 100644
--- a/webrtc/rtc_tools/event_log_visualizer/analyzer.h
+++ b/webrtc/rtc_tools/event_log_visualizer/analyzer.h
@@ -85,7 +85,9 @@
 
   void CreateFractionLossGraph(Plot* plot);
 
-  void CreateTotalBitrateGraph(PacketDirection desired_direction, Plot* plot);
+  void CreateTotalBitrateGraph(PacketDirection desired_direction,
+                               Plot* plot,
+                               bool show_detector_state = false);
 
   void CreateStreamBitrateGraph(PacketDirection desired_direction, Plot* plot);