Revert "Update all Angular libs (run update_all.sh)."

third_party/pkg/angular/example/web/animation/stress_demo.dart

-part of animation;
-
-@Component(
-    selector: 'stress-demo',
-    template: '''
-      <div class="stress-demo">
-        <button ng-click="ctrl.visible = !ctrl.visible">
-          Toggle Visibility</button>
-        <div>
-          <div class="stress-box" ng-repeat="number in ctrl.numbers"></div>
-        </div>
-      </div>
-    ''',
-    publishAs: 'ctrl',
-    applyAuthorStyles: true)
-class StressDemo {
-  bool _visible = true;
-  final numbers = <int>[1, 2];
-
-  // When visibility changes add or remove a large chunk of elements.
-  void set visible(bool value) {
-    if (value) {
-      for (int i = 0; i < 200; i++) {
-        numbers.add(i);
-      }
-    } else {
-      numbers.clear();
-    }
-    _visible = value;
-  }
-
-  bool get visible => _visible;
-}