Performance dashboard identified a 5.2% regression in speedometer/Total on cros-sand at revision range 31120720959206701:31590000975300000. Graph: https://chromeperf.appspot.com/report?masters=ChromeOSPerf&bots=cros-sand&tests=speedometer%2FTotal&checked=Total%2CTotal_ref%2Cref&rev=31590000975300000

It happens on multiple boards:
https://chromeperf.appspot.com/report?sid=9743227e7b26de467e5574ffbe03eca1fab82fc269e30964432cda2ed7ed97cd&rev=31620000976200000

looks like regresses between 61.9751 - 61.9752
Need bisect