BUG=angleproject:2107

Change-Id: I088956a1e13247c593cbb84677f346ef6f0fe983
Reviewed-on: https://chromium-review.googlesource.com/678483
Commit-Queue: Geoff Lang <geofflang@chromium.org>
Reviewed-by: Jamie Madill <jmadill@chromium.org>
Reviewed-by: Geoff Lang <geofflang@chromium.org>