BUG=angleproject:1238

Change-Id: Id3b219dfcc758cf19d61b7dc7eeabd8c2159d212
Reviewed-on: https://chromium-review.googlesource.com/315100Reviewed-by: Jamie Madill <jmadill@chromium.org>
Tested-by: Geoff Lang <geofflang@chromium.org>