Reland of Make RTX pt/apt reconfigurable by calling WebRtcVideoChannel2::SetRecvParameters.

webrtc/tools/event_log_visualizer/analyzer.cc

Index: webrtc/tools/event_log_visualizer/analyzer.cc
diff --git a/webrtc/tools/event_log_visualizer/analyzer.cc b/webrtc/tools/event_log_visualizer/analyzer.cc
index 3fd2c25fe8d2d1a5463a4c3fe223a66931ad8d45..9794ab811ad85c6686382fb54bc39dcd36c63e48 100644
--- a/webrtc/tools/event_log_visualizer/analyzer.cc
+++ b/webrtc/tools/event_log_visualizer/analyzer.cc
@@ -311,13 +311,11 @@ EventLogAnalyzer::EventLogAnalyzer(const ParsedRtcEventLog& log)
         StreamId stream(config.rtp.remote_ssrc, kIncomingPacket);
         extension_maps[stream] = RtpHeaderExtensionMap(config.rtp.extensions);
         video_ssrcs_.insert(stream);
-        for (auto kv : config.rtp.rtx) {
-          StreamId rtx_stream(kv.second.ssrc, kIncomingPacket);
-          extension_maps[rtx_stream] =
-              RtpHeaderExtensionMap(config.rtp.extensions);
-          video_ssrcs_.insert(rtx_stream);
-          rtx_ssrcs_.insert(rtx_stream);
-        }
+        StreamId rtx_stream(config.rtp.rtx_ssrc, kIncomingPacket);
+        extension_maps[rtx_stream] =
+            RtpHeaderExtensionMap(config.rtp.extensions);
+        video_ssrcs_.insert(rtx_stream);
+        rtx_ssrcs_.insert(rtx_stream);
         break;
       }
       case ParsedRtcEventLog::VIDEO_SENDER_CONFIG_EVENT: {