Added a test for crash in DeviceDisabledScreen

Follow up CL to crrev.com/2815893002

TEST=Manual. This test was crashing without the fix in cr/2815893002, now it's working fine.
BUG=709518

Review-Url: https://codereview.chromium.org/2843513002
Cr-Commit-Position: refs/heads/master@{#466719}
1 file changed