This is part of the following reland cl: https://webrtc-review.googlesource.com/c/src/+/105600 Adding just the new location of MockVideoEncoder first and updating downstream projects before relanding the rest of that change. Bug: webrtc:9722 Change-Id: I44ba65a72cde1eea62ee4520d8e84472f4e41c0f Reviewed-on: https://webrtc-review.googlesource.com/c/105620 Reviewed-by: Per Kjellander <perkj@webrtc.org> Commit-Queue: Erik Språng <sprang@webrtc.org> Cr-Commit-Position: refs/heads/master@{#25144}