* The method can be chained just as the other methods on NS_MutateURI.
* In case the mutator object does not implement the interface, mStatus will be set to an error code.
* This is useful when you are constructing a new URI and the type of the mutator is known. I expect a future patch will add a MaybeApply method, that does not set mStatus to an error code if the mutator does not implement the interface.
* This patch changes nsHostObjectProtocolHandler::NewURI to use the new method and avoid a static_cast<nsHostObjectURI*>(uri)
MozReview-Commit-ID: 9kvXJX54gUP
--HG--
extra : rebase_source : 2a27778ec583251fac26c74d78125bd7266d6d87
a48c8f1ada