Fix Exception Bad getter call: getURIObject

After this commit: https://github.com/facebook/phabricator/commit/d9296638cdd4ac98882850ed742adbb08856bef2

I started getting this error:

Unhandled Exception ("Exception")
Bad getter call: getURIObject

It turns out that getURIObject just needed to be getRemoteURIObject and then the problem goes away.