BUG=angleproject:1468

Change-Id: I3d75a03fcf624fe7f9510e76edc4a8298d8c5a72
Reviewed-on: https://chromium-review.googlesource.com/412860
Commit-Queue: Geoff Lang <geofflang@chromium.org>
Reviewed-by: Corentin Wallez <cwallez@chromium.org>