BUG=angleproject:1354

Change-Id: I2e8051910f50dc040f6be4922142364d36788c4e
Reviewed-on: https://chromium-review.googlesource.com/399041
Commit-Queue: Geoff Lang <geofflang@chromium.org>
Reviewed-by: Corentin Wallez <cwallez@chromium.org>