Also update a test to trigger the bug.

Bug: angleproject:2763
Change-Id: I8e6735320a34dcc4cc8beee1b7a22b768912f24f
Reviewed-on: https://chromium-review.googlesource.com/1234338Reviewed-by: Shahbaz Youssefi <syoussefi@chromium.org>
Commit-Queue: Jamie Madill <jmadill@chromium.org>