message: fix(upgrade): fix upgrade component Closure optimization.
  $scope and $element are passed to AngularJS, which is not optimized
  together with the app. That means properties must be quoted to prevent
  renaming.
diff: @@ -355,7 +355,8 @@ export class UpgradeComponent implements OnInit, OnChanges, DoCheck, OnDestroy {
  controllerType: angular.IController, $scope: angular.IScope,
  $element: angular.IAugmentedJQuery, controllerAs: string) {
  // TODO: Document that we do not pre-assign bindings on the controller instance
  - const locals = {$scope, $element};
  + // Quoted properties below so that this code can be optimized with Closure Compiler.
  + const locals = {'$scope': $scope, '$element': $element};
  const controller = this.$controller(controllerType, locals, null, controllerAs);
  $element.data(controllerKey(this.directive.name), controller);
  return controller;
  