Remove //rtc_base:refcount from public deps

Bug: webrtc:8603
Change-Id: Ib27a107ae809df739492846175f0e9c4af40d21a
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/257910
Reviewed-by: Mirko Bonadei <mbonadei@webrtc.org>
Auto-Submit: Florent Castelli <orphis@webrtc.org>
Reviewed-by: Florent Castelli <orphis@webrtc.org>
Commit-Queue: Florent Castelli <orphis@webrtc.org>
Cr-Commit-Position: refs/heads/main@{#36447}
diff --git a/api/audio_codecs/BUILD.gn b/api/audio_codecs/BUILD.gn
index 4fd30ce..8d74576 100644
--- a/api/audio_codecs/BUILD.gn
+++ b/api/audio_codecs/BUILD.gn
@@ -34,6 +34,7 @@
     "..:scoped_refptr",
     "../../api:field_trials_view",
     "../../rtc_base:checks",
+    "../../rtc_base:refcount",
     "../../rtc_base:rtc_base_approved",
     "../../rtc_base:sanitizer",
     "../../rtc_base/system:rtc_export",