Group tests to Notification Permission Types?

[gauntface]

Firefox is awesome in that you can dynamically (from within a page) set permission for notifications, making it easy to run the test suite as is and set the permissions.

In Chrome we can set these permissions via the user preferences which can't be set from within the page directly, so we either need to split the tests into groups based on permissions or find a way for the test runner to call out into the node code running the tests and set the preferences dynamically (If possible).