BUG=angleproject:946

Change-Id: I5652495842b057998318b1583f8e1a586eba39aa
Reviewed-on: https://chromium-review.googlesource.com/258940Tested-by: Cooper Partin <coopp@microsoft.com>
Reviewed-by: Geoff Lang <geofflang@chromium.org>
Reviewed-by: Jamie Madill <jmadill@chromium.org>