c7701c679d0913d9b521f531c82529bf3da42f99

In eb47db12fe
the user variable was
modified to be of type Provider<CurrentUser>.
Unfortunately there were several instanceof tests that did not get
updated to the new type, testing if Provider is an IdentifiedUser,
which is always false.
Rename the field to be clear it is a Provider and update all
references in the class to the Provider calling convention.
Change-Id: I4c17a874ee313fe0b4d26b8450b07781b976f64c
Description
RETIRED, Gerrit as used by OpenStack