Reland of "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..4db33a13ec6b6bb5c3bf215702b88e79095663ae 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 +58,8 @@ class MockRtcEventLog : public RtcEventLog {
                void(int32_t bitrate,
                     uint8_t fraction_loss,
                     int32_t total_packets));
+  MOCK_METHOD1(LogAudioNetworkAdaptation,
+               void(const AudioNetworkAdaptor::EncoderRuntimeConfig& config));
 };
 
 }  // namespace webrtc