Hey Carlos, this would be a good one to look at. r203496 ("[GTK] Web view background colors don't work in accelerated compositing mode"), r203497 ("[GTK][Threaded Compositor] Web view background colors don't work"), or less-likely r203468 ("[Threaded Compositor] Flickering when zooming in/out in maps.google.com") broke layout test media/video-object-fit.html quite badly. It's an image test, so I can't post a diff, but the expected results are background colors and the actual results are something completely different. Updating expectations accordingly.
We recently found the video-object-fit.html rendering issue in bug 210544, and I don't see the crash issue and rendering issue by running it several times. So we'd like to re-enable them again to make sure that we don't have regression again. How do you think about it?
Created attachment 397070 [details] patch to re-enable video-object-fit.html patch to re-enable and re-baseline video-object-fit.html in case.