Adding Angular and dependent packages for testing

third_party/pkg/route_hierarchical/example/full/company-info.dart

+library companyinfo;
+
+import 'dart:async';
+import 'dart:html';
+
+import 'package:route_hierarchical/client.dart';
+import 'package:web_ui/web_ui.dart';
+
+import 'index.dart';
+
+
+class CompanyInfoComponent extends WebComponent {
+  var company;
+  RouteHandle route;
+  @observable String section;
+  @observable String infoUrl;
+  @observable String activitiesUrl;
+  @observable String notesUrl;
+
+  inserted() {
+    route.getRoute('info').onRoute.listen((_) => showSection('info'));
+    route.getRoute('activities')
+        .onRoute.listen((_) => showSection('activities'));
+    route.getRoute('notes')
+      ..onRoute.listen((_) => showSection('notes'))
+      ..onLeave.listen(notesLeave);
+
+    infoUrl = router.url('info', startingFrom: route);
+    activitiesUrl = router.url('activities', startingFrom: route);
+    notesUrl = router.url('notes', startingFrom: route);
+  }
+
+  removed() {
+    route.discard();
+  }
+
+  notesLeave(RouteEvent e) {
+    e.allowLeave(new Future.value(window.confirm('Are you sure you want ' +
+                                                 'to leave?')));
+  }
+
+  showSection(section) {
+    this.section = section;
+  }
+
+  gotoSection(section, e) {
+    if (e != null) {
+      e.preventDefault();
+    }
+    router.go(section, {}, startingFrom: route).then((allowed) {
+      if (allowed) {
+        showSection(section);
+      }
+    });
+  }
+
+  String activeClass(sect) {
+    if (sect == section) {
+      return "active";
+    }
+    return "";
+  }
+}