refactor(Identifiers): mark module urls final.
refactor(Identifiers): mark module urls final.

PiperOrigin-RevId: 160222191

angulardart/angular,chalin/angular2,matanlurey/angular,chalin/angular2,kevmoo/angular,kevmoo/angular,angulardart/angular,kevmoo/angular,matanlurey/angular,chalin/angular2,angulardart/angular,matanlurey/angular