fix(_tests): Depend on scratch_space from github.
fix(_tests): Depend on scratch_space from github.

PiperOrigin-RevId: 174230747

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