Use _extension in the outliner instead of hardcoding the extension
Use _extension in the outliner instead of hardcoding the extension

PiperOrigin-RevId: 166878085

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