Sync test expectations after r172680.

r172680 retired a set of unsound DOMWindow destructor asserts; remove
the flaky test expectations that had been added due to them.

R=
BUG=349528, 356992, 356994, 356995, 357069, 357460, 357461, 366043

Review URL: https://codereview.chromium.org/258713007

git-svn-id: svn://svn.chromium.org/blink/trunk@172715 bbb929c8-8fbe-4397-9dbb-9b2b20218538