BUG=angleproject:1262

Change-Id: I863c46c8557604da045447550f7d69831c9f06b5
Reviewed-on: https://chromium-review.googlesource.com/318780Reviewed-by: Corentin Wallez <cwallez@chromium.org>
Tested-by: Geoff Lang <geofflang@chromium.org>