Adding Angular and dependent packages for testing

third_party/pkg/route_hierarchical/example/full/root-view.dart

Index: third_party/pkg/route_hierarchical/example/full/root-view.dart
diff --git a/third_party/pkg/route_hierarchical/example/full/root-view.dart b/third_party/pkg/route_hierarchical/example/full/root-view.dart
new file mode 100644
index 0000000000000000000000000000000000000000..a780a9ef5b5d9b7f8c211c2d79869f5d5b6a62e9
--- /dev/null
+++ b/third_party/pkg/route_hierarchical/example/full/root-view.dart
@@ -0,0 +1,20 @@
+library companyinfo;
+
+import 'dart:html';
+import 'package:web_ui/web_ui.dart';
+import 'package:route_hierarchical/client.dart';
+
+class RootView extends WebComponent {
+  RouteHandle route;
+  @observable String currentRouteName;
+
+  inserted() {
+    ['home', 'companyInfo', 'portfolio'].forEach((routeName) =>
+        route.getRoute(routeName)
+           .onRoute.listen((_) => currentRouteName = routeName));
+  }
+
+  removed() {
+    route.discard();
+  }
+}