Instead use WebRtcKeyValueConfig and FieldTrialBasedConfig BUG=webrtc:10335 Change-Id: Ie148cb466f86d8fa1ded5c7f125fbcccf6e7dbe3 Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/132714 Commit-Queue: Per Kjellander <perkj@webrtc.org> Reviewed-by: Sebastian Jansson <srte@webrtc.org> Cr-Commit-Position: refs/heads/master@{#27642}