BUG=angleproject:1523

Change-Id: I73df8d9a23c3d22792abde44b495be7478abfc22
Reviewed-on: https://chromium-review.googlesource.com/685648
Commit-Queue: Geoff Lang <geofflang@chromium.org>
Reviewed-by: Corentin Wallez <cwallez@chromium.org>