BUG=angleproject:2306

Change-Id: I96498aebbbc62ebd53e5320db17ef6a54d20d2dc
Reviewed-on: https://chromium-review.googlesource.com/998308
Commit-Queue: Lingfeng Yang <lfy@google.com>
Reviewed-by: Geoff Lang <geofflang@chromium.org>