That were causing compilation error in Chromium Mac builds

BUG=angleproject:891

Change-Id: I45777451b300928e8c8d232a5b7ecffa7f1c3cbe
Reviewed-on: https://chromium-review.googlesource.com/299721Reviewed-by: Geoff Lang <geofflang@chromium.org>
Reviewed-by: Jamie Madill <jmadill@chromium.org>
Tryjob-Request: Corentin Wallez <cwallez@chromium.org>
Tested-by: Corentin Wallez <cwallez@chromium.org>