This clears the decks for deprecating and eventually removing the nonstandard SetDirection method. Bug: chromium:980879 Change-Id: Ibc291de3db690e9ef4e6cb3550390d7728f02a83 Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/181860 Reviewed-by: Sami Kalliomäki <sakal@webrtc.org> Commit-Queue: Harald Alvestrand <hta@webrtc.org> Cr-Commit-Position: refs/heads/master@{#31948}