ApplicationCache - verify that an open network whitelist doesn't break online vs...

ApplicationCache - verify that an open network whitelist doesn't break online vs fallback layering.
https://bugs.webkit.org/show_bug.cgi?id=89714

An explicit online network namespace should trump a fallback namespace, the fallback should not be used.
Chrome had a bug where if a '*' was in the NETWORK section, explicit entries got ignored, and that
expected behavior was botched. See http://code.google.com/p/chromium/issues/detail?id=133816 for more
details about the chrome bug and code change this LayoutTest aims to verify.

Reviewed by Tony Chang.

* http/tests/appcache/resources/online-fallback-layering.manifest:

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@121062 268f45cc-cd09-0410-ab3c-d52691b4dbfc