Performance dashboard identified a zero-to-nonzero regression in cheets_ScreenRotation/To_Portrait_Number_High_input_latency on cros-reef at revision range 31890000985600001:31990000989000000. Graph: https://chromeperf.appspot.com/report?masters=ARC&bots=cros-reef&tests=cheets_ScreenRotation%2FTo_Portrait_Number_High_input_latency&checked=To_Portrait_Number_High_input_latency%2CTo_Portrait_Number_High_input_latency_ref%2Cref&rev=31990000989000000

Starting from 8/31, on multiple boards: cros-elm, cros-bob, cros-caroline, cros-kevin, cros-hana, cros-cyan, etc.
https://groups.google.com/a/google.com/forum/#!searchin/crosbolt_arc_perf_alerts/cheets_ScreenRotation$2FTo_Portrait_Number_High_input_latency%7Csort:relevance