This emphasizes the "hint" to potential external users that the class has been deprecated. Bug: webrtc:12339 Change-Id: Iab83481af69a505059297cce959f02b5ab649f2f Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/237805 Reviewed-by: Mirko Bonadei <mbonadei@webrtc.org> Commit-Queue: Tommi <tommi@webrtc.org> Cr-Commit-Position: refs/heads/main@{#35368}