Wire up partial video frames in video quality tests Bug: webrtc:10152 Change-Id: Ifa13bb308258c8d3930a6cfbcc97c95b132cecf3 Reviewed-on: https://webrtc-review.googlesource.com/c/120410 Commit-Queue: Ilya Nikolaevskiy <ilnik@webrtc.org> Reviewed-by: Stefan Holmer <stefan@webrtc.org> Cr-Commit-Position: refs/heads/master@{#26549}