Visualize events related to probing in the total bitrate graph.

webrtc/tools/event_log_visualizer/plot_protobuf.cc

Index: webrtc/tools/event_log_visualizer/plot_protobuf.cc
diff --git a/webrtc/tools/event_log_visualizer/plot_protobuf.cc b/webrtc/tools/event_log_visualizer/plot_protobuf.cc
index 6e4558579bcd4343ce08cc0e58e79c850e6f199b..d5e9192351e806b1cf8dcd697e3ddc4a559c348a 100644
--- a/webrtc/tools/event_log_visualizer/plot_protobuf.cc
+++ b/webrtc/tools/event_log_visualizer/plot_protobuf.cc
@@ -40,6 +40,9 @@ void ProtobufPlot::ExportProtobuf(webrtc::analytics::Chart* chart) {
       data_set->set_highlight_points(true);
     } else if (series_list_[i].style == LINE_STEP_GRAPH) {
       data_set->set_style(webrtc::analytics::ChartStyle::LINE_STEP_CHART);
+    } else if (series_list_[i].style == DOT_GRAPH) {
+      data_set->set_style(webrtc::analytics::ChartStyle::SCATTER_CHART);
+      data_set->set_highlight_points(true);
     } else {
       data_set->set_style(webrtc::analytics::ChartStyle::UNDEFINED);
     }