BUG=angleproject:882

Change-Id: I00fd6d3cfaa107561cee5e4c82d3c60438052963
Reviewed-on: https://chromium-review.googlesource.com/265723Reviewed-by: Jamie Madill <jmadill@chromium.org>
Reviewed-by: Kenneth Russell <kbr@chromium.org>
Tested-by: Geoff Lang <geofflang@chromium.org>