This test appears to be flaky.

BUG=angleproject:1541

Change-Id: I2a91626f6dc309d2dc23098cbaf290adac7f4859
Reviewed-on: https://chromium-review.googlesource.com/394217Reviewed-by: Jamie Madill <jmadill@chromium.org>
Commit-Queue: Jamie Madill <jmadill@chromium.org>