BUG=angleproject:2267
TEST=angle_unittests

Change-Id: I25bd8baded9c13e75555578e4b61b99a56e0c702
Reviewed-on: https://chromium-review.googlesource.com/850974Reviewed-by: Corentin Wallez <cwallez@chromium.org>
Reviewed-by: Geoff Lang <geofflang@chromium.org>
Commit-Queue: Olli Etuaho <oetuaho@nvidia.com>