Add opus_audio_decoder_factory to the static library.

Bug: None
Change-Id: Ia8aa6594ec1d2bca6649ec7da284c931a0f68ce6
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/360000
Reviewed-by: Jeremy Leconte <jleconte@webrtc.org>
Commit-Queue: Mirko Bonadei <mbonadei@webrtc.org>
Reviewed-by: Jeremy Leconte <jleconte@google.com>
Reviewed-by: Christoffer Dewerin <jansson@webrtc.org>
Reviewed-by: Mirko Bonadei <mbonadei@webrtc.org>
Cr-Commit-Position: refs/heads/main@{#42811}
diff --git a/BUILD.gn b/BUILD.gn
index 7c8a0fc..894ff71 100644
--- a/BUILD.gn
+++ b/BUILD.gn
@@ -529,6 +529,7 @@
       "api:libjingle_peerconnection_api",
       "api:rtc_error",
       "api:transport_api",
+      "api/audio_codecs:opus_audio_decoder_factory",
       "api/crypto",
       "api/rtc_event_log:rtc_event_log_factory",
       "api/task_queue",