BUG=angleproject:2107

Change-Id: I45b914a6edf721c6ec53ca2bc6e139685b059d20
Reviewed-on: https://chromium-review.googlesource.com/957271
Commit-Queue: Geoff Lang <geofflang@chromium.org>
Reviewed-by: Jamie Madill <jmadill@chromium.org>