Move event logging of config into AudioSendStream.

It was previously logged in Call, but streams are not always created
with the full configuration, which caused header extensions to be
missing from the log.

Bug: webrtc:9885
Change-Id: I86c0424004c4629ebab0f6b155b83fb90e15b131
Reviewed-on: https://webrtc-review.googlesource.com/c/108601
Reviewed-by: Björn Terelius <terelius@webrtc.org>
Reviewed-by: Stefan Holmer <stefan@webrtc.org>
Commit-Queue: Oskar Sundbom <ossu@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#25483}
diff --git a/audio/BUILD.gn b/audio/BUILD.gn
index b44bbe5..654e810 100644
--- a/audio/BUILD.gn
+++ b/audio/BUILD.gn
@@ -65,6 +65,7 @@
     "../common_audio:common_audio_c",
     "../logging:rtc_event_audio",
     "../logging:rtc_event_log_api",
+    "../logging:rtc_stream_config",
     "../modules/audio_coding",
     "../modules/audio_coding:audio_format_conversion",
     "../modules/audio_coding:audio_network_adaptor_config",