Add loss-based BWE estimate to the outgoing bitrate plot.

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 9b69ff12630d9186ef8c964fc5fb00b3d670a5f2..0b92c10e1086decd181b8b4ac63e621401fce8ad 100644
--- a/webrtc/tools/event_log_visualizer/analyzer.h
+++ b/webrtc/tools/event_log_visualizer/analyzer.h
@@ -67,6 +67,13 @@ class EventLogAnalyzer {
     RTPHeader header;
   };
 
+  struct BwePacketLossEvent {
+    uint64_t timestamp;
+    int32_t new_bitrate;
+    uint8_t fraction_loss;
+    int32_t expected_packets;
+  };
+
   const ParsedRtcEventLog& parsed_log_;
 
   // A list of SSRCs we are interested in analysing.
@@ -78,6 +85,9 @@ class EventLogAnalyzer {
   // if the stream has been configured.
   std::map<StreamId, std::vector<LoggedRtpPacket>> rtp_packets_;
 
+  // A list of all updates from the send-side loss-based bandwidth estimator.
+  std::vector<BwePacketLossEvent> bwe_loss_updates_;
+
   // Window and step size used for calculating moving averages, e.g. bitrate.
   // The generated data points will be |step_| microseconds apart.
   // Only events occuring at most |window_duration_| microseconds before the