Tests seem close enough to green that it's time to add EWS.
Created attachment 273308 [details] proposed patch
unofficial r=me if some tests are already broken, do we currently retry in ews and check if they are new failures or existing?
We do. Flaky tests can of course cause major slowdown, or even false failures.
Committed r197805.
deployed it on the server.
Follow-up: http://trac.webkit.org/r197834 (webkitpy only, no need to re-deploy).