BUG=angleproject:1618

Change-Id: I790944b49badc910b6c72266469fcb8e86ac4252
Reviewed-on: https://chromium-review.googlesource.com/1019387
Commit-Queue: Geoff Lang <geofflang@chromium.org>
Reviewed-by: Jamie Madill <jmadill@chromium.org>