Changes

* [https://treeherder.mozilla.org/perf.html#/graphs?series=mozilla-inbound,1890241,1,4&series=mozilla-inbound,1684808,1,4&series=mozilla-centralautoland,16848661684872,1,4&series=mozilla-centralinbound,18884241944123,1,4&series=autolandmozilla-central,18854591684866,1,4&series=autoland,16848721885459,1,4&series=mozilla-central,1939409,1,4&series=mozilla-inboundcentral,19441231888424,1,4&series=autoland,1925415,1,4&zoom=1553607667570.7434,1553896381000,3960000,4074831.4606741574&selected=autoland,1925415,451550,764166500,4 JavaScript Memory - Regression view]<br/>This is useful for tracking down where a regression started by breaking out integration branches. It's limited to just Linux, but JS is generally platform agnostic.