
When PolyGerrit is enabled, a new user who logs in for the first time when viewing a change will eventually end up directed to a path like "/register/c/12345". If a user visits such a URL directly (or reloads after being redirected there), they shouldn't get a 404 page. Change-Id: I0c7f2972670ddcfdd5ac031a89c235d2fe0510aa