Comment 100 for bug 294712

From http://www.mozilla.org/owners.html#cookies-and-permissions that seems to be Dan Witte.

Dan: please see comment 93 - comment 95; this patch is adding a temporary policy override to nsContentBlocker. The attached patch accomplishes this with an in-memory array of policies per type and host. The method of adding and then later testing the host was modeled after nsPermissionManager to be consistent.