BUG=angleproject:2230

Change-Id: Ie291ba05efa89bc4ea52966e975d5a21431a461f
Reviewed-on: https://chromium-review.googlesource.com/757877
Commit-Queue: Jamie Madill <jmadill@chromium.org>
Reviewed-by: Geoff Lang <geofflang@chromium.org>