BUG=angleproject:1190

Change-Id: I248935ef81803062cf9ba5776512cda456331f51
Reviewed-on: https://chromium-review.googlesource.com/309634
Tryjob-Request: Austin Kinross <aukinros@microsoft.com>
Reviewed-by: Jamie Madill <jmadill@chromium.org>
Reviewed-by: Geoff Lang <geofflang@chromium.org>
Tested-by: Geoff Lang <geofflang@chromium.org>