Log audio network adapter decisions in event log.

webrtc/logging/BUILD.gn

Index: webrtc/logging/BUILD.gn
diff --git a/webrtc/logging/BUILD.gn b/webrtc/logging/BUILD.gn
index a50d8e47dc687b8ceabb28ab8c9fbfec7e800f9a..79954639750654c025816913d23653195db55a7b 100644
--- a/webrtc/logging/BUILD.gn
+++ b/webrtc/logging/BUILD.gn
@@ -42,6 +42,7 @@ rtc_static_library("rtc_event_log_impl") {
     ":rtc_event_log_api",
     "..:webrtc_common",
     "../api:call_api",
+    "../modules/audio_coding:audio_network_adaptor",
     "../modules/rtp_rtcp",
   ]
 
@@ -83,7 +84,8 @@ if (rtc_enable_protobuf) {
     sources = [
       "rtc_event_log/rtc_event_log.proto",
     ]
-    proto_out_dir = "webrtc/logging/rtc_event_log"
+    proto_in_dir = "//"
+    proto_out_dir = "."
   }
 }