This makes the tests weaker, because WebKit doesn't call out to the client, and authentication request doesn't get logged. Also, the tests fail when run with --fully-parallel option. Longer term, we should clear HTTP auth between tests, but that's a bit more of an undertaking.
Created attachment 242519 [details] proposed fix
Created attachment 242520 [details] with a real ChangeLog
Committed <http://trac.webkit.org/r176752>.