Needed to restrict visibility. Bug: webrtc:7494 Change-Id: I58a609666ca04d785c6dd2ed19233b395a94b06c Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/234584 Commit-Queue: Alessio Bazzica <alessiob@webrtc.org> Reviewed-by: Hanna Silen <silen@webrtc.org> Cr-Commit-Position: refs/heads/main@{#35201}