BUG=angleproject:1874

Change-Id: I97a02d2c8b1f7ecb530684464fc02f528d34de7c
Reviewed-on: https://chromium-review.googlesource.com/458965Reviewed-by: Austin Kinross <aukinros@microsoft.com>
Reviewed-by: Geoff Lang <geofflang@chromium.org>
Commit-Queue: Corentin Wallez <cwallez@chromium.org>