BUG=angleproject:2306

Change-Id: I178b051c23da51d8eaf24c2a0df97f01ae5f3aaa
Reviewed-on: https://chromium-review.googlesource.com/1002914
Commit-Queue: Lingfeng Yang <lfy@google.com>
Reviewed-by: Jamie Madill <jmadill@chromium.org>