Update the Angular/DI tests to latest from github.

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

 import 'package:di/di.dart';
 import 'package:angular/angular.dart';
 import 'package:angular/playback/playback_http.dart';
 import 'todo.dart';
 
 import 'dart:html';
 
-// Everything in the 'todo' library should be preserved by MirrorsUsed
+// Everything in the 'todo' library should be preserved by MirrorsUsed.
 @MirrorsUsed(
-    targets: const['todo'],
+    targets: const ['todo'],
     override: '*')
 import 'dart:mirrors';
 
 main() {
-
   print(window.location.search);
   var module = new Module()
-    ..type(TodoController)
-    ..type(PlaybackHttpBackendConfig);
+      ..type(TodoController)
+      ..type(PlaybackHttpBackendConfig);
 
   // If these is a query in the URL, use the server-backed
   // TodoController.  Otherwise, use the stored-data controller.
   var query = window.location.search;
   if (query.contains('?')) {
-    module.type(ServerController);
+    module.type(ServerController, implementedBy: HttpServerController);
   } else {
     module.type(ServerController, implementedBy: NoServerController);
   }
 
   if (query == '?record') {
     print('Using recording HttpBackend');
     var wrapper = new HttpBackendWrapper(new HttpBackend());
     module.value(HttpBackendWrapper, new HttpBackendWrapper(new HttpBackend()));
     module.type(HttpBackend, implementedBy: RecordingHttpBackend);
   }
 
   if (query == '?playback') {
     print('Using playback HttpBackend');
     module.type(HttpBackend, implementedBy: PlaybackHttpBackend);
   }
 
-  ngBootstrap(module:module);
+  ngBootstrap(module: module);
 }