BUG=angleproject:1635

Change-Id: Ia6ab5a2a7339d78912d7f871ed62941af1957eb1
Reviewed-on: https://chromium-review.googlesource.com/702856
Commit-Queue: Geoff Lang <geofflang@chromium.org>
Reviewed-by: Jamie Madill <jmadill@chromium.org>