Adding Angular and dependent packages for testing

third_party/pkg/angular/demo/todo/main.dart

 import 'package:di/di.dart';
 import 'package:angular/angular.dart';
 import 'package:angular/playback/playback_http.dart';
 import 'todo.dart';
 
-@MirrorsUsed(targets: const[
-  'angular',
-  'angular.core',
-  'angular.core.dom',
-  'angular.filter',
-  'angular.perf',
-  'angular.directive',
-  'angular.routing',
-  'angular.core.parser',
-  'todo',
-  'perf_api',
-  'List',
-  'NodeTreeSanitizer',
-  'PlaybackHttpBackendConfig'
-  ],
-  override: '*')
-import 'dart:mirrors';
-
 import 'dart:html';
 
 main() {
 
   print(window.location.search);
   var module = new Module()
     ..type(TodoController)
     ..type(PlaybackHttpBackendConfig);
 
   // If these is a query in the URL, use the server-backed
@@ skipping 12 matching lines @@
     module.type(HttpBackend, implementedBy: RecordingHttpBackend);
   }
 
   if (query == '?playback') {
     print('Using playback HttpBackend');
     module.type(HttpBackend, implementedBy: PlaybackHttpBackend);
   }
 
   ngBootstrap(module:module);
 }