We cannot create a new WindowManagerPolicy every time since the method
isn't called from the main thread every time, which could lead to
exceptions being thrown when trying to create PhoneWindowManager.
Instead of creating a new policy, bind to the keyguard service on bind,
and then pass it to the profile to operate on.
Ref: NIGHTLIES-1640
Change-Id: I3ac58bfa534755eaa73890cc5ddf05987a7d0d8c
Signed-off-by: Roman Birg <roman@cyngn.com>