BUG=angleproject:892

Change-Id: I80d8d67270662c7f2be893f4a8318fbc0926f1fc
Reviewed-on: https://chromium-review.googlesource.com/272677Reviewed-by: Jamie Madill <jmadill@chromium.org>
Reviewed-by: Geoff Lang <geofflang@chromium.org>
Tested-by: Corentin Wallez <cwallez@chromium.org>