Introduced in cd2ed608.

BUG=angleproject:1570

Change-Id: I71ef8a06e379eca853e7729863976e868066df95
Reviewed-on: https://chromium-review.googlesource.com/403313Reviewed-by: Jamie Madill <jmadill@chromium.org>
Commit-Queue: Jamie Madill <jmadill@chromium.org>