Log audio network adapter decisions in event log.

webrtc/logging/rtc_event_log/rtc_event_log.h

Index: webrtc/logging/rtc_event_log/rtc_event_log.h
diff --git a/webrtc/logging/rtc_event_log/rtc_event_log.h b/webrtc/logging/rtc_event_log/rtc_event_log.h
index ec57b8b394f45e1d9c719be1a78dc4738ee0e42b..a2f62fa34c216e48dd29c646fed573c56ecce346 100644
--- a/webrtc/logging/rtc_event_log/rtc_event_log.h
+++ b/webrtc/logging/rtc_event_log/rtc_event_log.h
@@ -108,6 +108,15 @@ class RtcEventLog {
                                      uint8_t fraction_loss,
                                      int32_t total_packets) = 0;
 
+  // Logs audio network adapror decisions.
+  virtual void LogAnaDecisionEvent(
+      rtc::Optional<int> bitrate_bps,
+      rtc::Optional<int> frame_length_ms,
+      rtc::Optional<float> uplink_packet_loss_fraction,
+      rtc::Optional<bool> enable_fec,
+      rtc::Optional<bool> enable_dtx,
+      rtc::Optional<size_t> num_channels) = 0;
+
   // Reads an RtcEventLog file and returns true when reading was successful.
   // The result is stored in the given EventStream object.
   // The order of the events in the EventStream is implementation defined.
@@ -149,6 +158,12 @@ class RtcEventLogNullImpl final : public RtcEventLog {
   void LogBwePacketLossEvent(int32_t bitrate,
                              uint8_t fraction_loss,
                              int32_t total_packets) override {}
+  void LogAnaDecisionEvent(rtc::Optional<int> bitrate_bps,
+                           rtc::Optional<int> frame_length_ms,
+                           rtc::Optional<float> uplink_packet_loss_fraction,
+                           rtc::Optional<bool> enable_fec,
+                           rtc::Optional<bool> enable_dtx,
+                           rtc::Optional<size_t> num_channels) override{};
 };
 
 }  // namespace webrtc