After this CL lands, an announcement will be made to discuss-webrtc about the deprecation of one version of InitEncode(). Bug: webrtc:10720 Change-Id: Ib992af0272bbb16ae16ef7e69491f365702d179e Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/140884 Reviewed-by: Karl Wiberg <kwiberg@webrtc.org> Reviewed-by: Sami Kalliomäki <sakal@webrtc.org> Reviewed-by: Erik Språng <sprang@webrtc.org> Commit-Queue: Elad Alon <eladalon@webrtc.org> Cr-Commit-Position: refs/heads/master@{#28224}