Can we add MotionMark[1] to the performance waterfall[2] so we don't unintentionally regress it in the future? I filed this under GPU because this is primarily a raster benchmark, though it could go under many other labels too.

[1] https://trac.webkit.org/export/HEAD/trunk/PerformanceTests/Animometer/index.html
[2] https://chromeperf.appspot.com