BUG=angleproject:1356

Change-Id: If63779e39609083deb6bb72dc8c29eaaa90c698c
Reviewed-on: https://chromium-review.googlesource.com/339813
Commit-Queue: Geoff Lang <geofflang@chromium.org>
Reviewed-by: Jamie Madill <jmadill@chromium.org>