Add NetEq delay plotting to event_log_visualizer

webrtc/tools/event_log_visualizer/analyzer.h

Index: webrtc/tools/event_log_visualizer/analyzer.h
diff --git a/webrtc/tools/event_log_visualizer/analyzer.h b/webrtc/tools/event_log_visualizer/analyzer.h
index 988f2cb482151aaa87288cf27ef119c7e5f38527..d7087994c0898892d88488b5ecb16b5a41330ea0 100644
--- a/webrtc/tools/event_log_visualizer/analyzer.h
+++ b/webrtc/tools/event_log_visualizer/analyzer.h
@@ -100,6 +100,9 @@ class EventLogAnalyzer {
   void CreateAudioEncoderEnableFecGraph(Plot* plot);
   void CreateAudioEncoderEnableDtxGraph(Plot* plot);
   void CreateAudioEncoderNumChannelsGraph(Plot* plot);
+  void CreateAudioJitterBufferGraph(const std::string& replacement_file_name,
+                                    int file_sample_rate_hz,
+                                    Plot* plot);
 
   // Returns a vector of capture and arrival timestamps for the video frames
   // of the stream with the most number of frames.