BUG=angleproject:2306

Change-Id: I42834078b14aaa20c4d4e6b67c097c810f5a17a3
Reviewed-on: https://chromium-review.googlesource.com/987297
Commit-Queue: Lingfeng Yang <lfy@google.com>
Reviewed-by: Jamie Madill <jmadill@chromium.org>