Test terminating session for crash during supervised user creation

If the browser crashes during supervised user creation, the
session_manager should end the session. It should restart the
browser otherwise.

BUG=chromium:422996
TEST=run this test

CQ-DEPEND=CL:222916,CL:222972,CL:223351

Change-Id: Ic4b17ededecef97546bb43483b49a17f65b6cad2
Reviewed-on: https://chromium-review.googlesource.com/223352
Reviewed-by: Denis Kuznetsov <[email protected]>
Tested-by: Chris Masone <[email protected]>
Commit-Queue: Chris Masone <[email protected]>
2 files changed