This information is useful for downscaling to avoid sampling artifacts. Bug: webrtc:9617 Change-Id: I3353e8384354bf400b150bb450b38777f4a7aa86 Reviewed-on: https://webrtc-review.googlesource.com/99100 Reviewed-by: Rasmus Brandt <brandtr@webrtc.org> Reviewed-by: Paulina Hensman <phensman@webrtc.org> Commit-Queue: Magnus Jedvert <magjed@webrtc.org> Cr-Commit-Position: refs/heads/master@{#24681}