Log audio network adapter decisions in event log.

webrtc/logging/rtc_event_log/mock/mock_rtc_event_log.h

Index: webrtc/logging/rtc_event_log/mock/mock_rtc_event_log.h
diff --git a/webrtc/logging/rtc_event_log/mock/mock_rtc_event_log.h b/webrtc/logging/rtc_event_log/mock/mock_rtc_event_log.h
index 315967b8c0a7c30f31fc9d710bdf12751e0e53d8..c461db23a37a62650a7ae044260acb4dd97952e4 100644
--- a/webrtc/logging/rtc_event_log/mock/mock_rtc_event_log.h
+++ b/webrtc/logging/rtc_event_log/mock/mock_rtc_event_log.h
@@ -58,6 +58,13 @@ class MockRtcEventLog : public RtcEventLog {
                void(int32_t bitrate,
                     uint8_t fraction_loss,
                     int32_t total_packets));
+  MOCK_METHOD6(LogAnaDecisionEvent,
+               void(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));
 };
 
 }  // namespace webrtc