This CL also removes dependency on the legacy field trial methods. Bug: webrtc:11926 Change-Id: I53feeee86b92878cf0f2b8ebdce3d101f9e04014 Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/255381 Reviewed-by: Jonas Oreland <jonaso@webrtc.org> Auto-Submit: Erik Språng <sprang@webrtc.org> Reviewed-by: Björn Terelius <terelius@webrtc.org> Commit-Queue: Björn Terelius <terelius@webrtc.org> Cr-Commit-Position: refs/heads/main@{#36205}