Adding Angular and dependent packages for testing

third_party/pkg/angular/lib/routing/ng_bind_route.dart

+part of angular.routing;
+
+/**
+ * A directive that allows to bind child components/directives to a specific
+ * route.
+ *
+ *     <div ng-bind-route="foo.bar">
+ *       <my-component></my-component>
+ *     </div>
+ *
+ * ng-bind-route directives can be nested.
+ *
+ *     <div ng-bind-route="foo">
+ *       <div ng-bind-route=".bar">
+ *         <my-component></my-component>
+ *       </div>
+ *     </div>
+ *
+ * The '.' prefix indicates that bar route is relative to the route in the
+ * parent ng-bind-route or ng-view directive.
+ *
+ * ng-bind-route overrides [RouteProvider] instance published by ng-view,
+ * however it does not effect view resolution by nested ng-view(s).
+ */
+@NgDirective(
+    visibility: NgDirective.CHILDREN_VISIBILITY,
+    publishTypes: const [RouteProvider],
+    selector: '[ng-bind-route]',
+    map: const {
+        'ng-bind-route': '@routeName'
+    }
+)
+class NgBindRouteDirective implements RouteProvider {
+  Router _router;
+  String routeName;
+  Injector _injector;
+
+  // We inject NgRoutingHelper to force initialization of routing.
+  NgBindRouteDirective(this._router, this._injector, NgRoutingHelper _);
+
+  /// Returns the parent [RouteProvider].
+  RouteProvider get _parent => _injector.parent.get(RouteProvider);
+
+  Route get route {
+    if (routeName.startsWith('.')) {
+      return _parent.route.getRoute(routeName.substring(1));
+    } else {
+      return _router.root.getRoute(routeName);
+    }
+  }
+
+  Map<String, String> get parameters {
+    var res = <String, String>{};
+    var p = route;
+    while (p != null) {
+      res.addAll(p.parameters);
+      p = p.parent;
+    }
+    return res;
+  }
+}