This test appears to be flaky.

BUG=angleproject:1541

Change-Id: I947dbc759e0fef505ce9b11e501f2dbe35ff1e5c
Reviewed-on: https://chromium-review.googlesource.com/394329Reviewed-by: Jamie Madill <jmadill@chromium.org>
Commit-Queue: Jamie Madill <jmadill@chromium.org>