Adding Angular and dependent packages for testing

third_party/pkg/angular/lib/bootstrap.dart

+part of angular;
+
+/**
+ * This is the top level module which describes the whole of angular.
+ *
+ * The Module is made up or
+ *
+ * - [NgCoreModule]
+ * - [NgCoreDomModule]
+ * - [NgFilterModule]
+ * - [NgPerfModule]
+ */
+class AngularModule extends Module {
+  AngularModule() {
+    install(new NgCoreModule());
+    install(new NgCoreDomModule());
+    install(new NgDirectiveModule());
+    install(new NgFilterModule());
+    install(new NgPerfModule());
+    install(new NgRoutingModule());
+
+    type(MetadataExtractor);
+    value(Expando, _elementExpando);
+  }
+}
+
+Injector _defaultInjectorFactory(List<Module> modules) =>
+    new DynamicInjector(modules: modules);
+
+/**
+ * This method is the main entry point to an angular application.
+ *
+ * # The [ngBootstrap] is responsible for:
+ *
+ *   1. Locating the root element of the application,
+ *   2. Creating Angular [NgZone]
+ *   3. Inside the [NgZone] create an injector
+ *   4. Retrieve the [Compiler] and compile the root eleement
+ *
+ *
+ * # Parameters:
+ *
+ *   - [module] Option application module to add to the [Injector].
+ *   - [modules] Optional list of [Module]s to add to the [Injector] (if more then one is needed).
+ *   - [element] Optional root element of the application. If non specified, the
+ *     the root element is looked up usinge the [selector]. If selector can not
+ *     identify a root, the root [HTTML] element is used for bootstraping.
+ *   - [selector] Optional CSS selector used to locate the root element for the application.
+ *   - [injectorFactor] Optinoal factory responsible for creating the injector.
+ *
+ *
+ *
+ * # A typical way to boostrap an Angular application:
+ *
+ *     Module myAppModule = new Module();
+ *     myAppModule.type(MyType);
+ *     ....
+ *     Injector injector = ngBootstrap(module: myAppModule);
+ */
+Injector ngBootstrap({
+        Module module: null,
+        List<Module> modules: null,
+        dom.Element element: null,
+        String selector: '[ng-app]',
+        Injector injectorFactory(List<Module> modules): _defaultInjectorFactory}) {
+  _publishToJavaScript();
+
+  var ngModules = [new AngularModule()];
+  if (module != null) ngModules.add(module);
+  if (modules != null) ngModules.addAll(modules);
+  if (element == null) {
+    element = dom.querySelector(selector);
+    var document = dom.window.document;
+    if (element == null) element = document.childNodes.firstWhere((e) => e is dom.Element);
+  }
+
+  // The injector must be created inside the zone, so we create the
+  // zone manually and give it back to the injector as a value.
+  NgZone zone = new NgZone();
+  ngModules.add(new Module()..value(NgZone, zone));
+
+  return zone.run(() {
+    var rootElements = [element];
+    Injector injector = injectorFactory(ngModules);
+    injector.get(Compiler)(rootElements)(injector, rootElements);
+    return injector;
+  });
+}