BUG=angleproject:1109

Change-Id: I551dbf79b98798f06fd5cbe1b005dc2410daaa6b
Reviewed-on: https://chromium-review.googlesource.com/289274Reviewed-by: Geoff Lang <geofflang@chromium.org>
Tested-by: Corentin Wallez <cwallez@chromium.org>