When converting from a .y4m file, it's illegal to pass a video_size
option since the resolution is already contained in the .y4m file.
TBR=phoglund@webrtc.org
NOTRY=TRUE
Bug: webrtc:9642
Change-Id: Iee7d2ba1332c45a1669af0fba43b0c3e7ce5846b
Reviewed-on: https://webrtc-review.googlesource.com/95949
Reviewed-by: Magnus Jedvert <magjed@webrtc.org>
Commit-Queue: Magnus Jedvert <magjed@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#24431}