Update pubspecs and dependencies to get pkgbuild tests working.

third_party/pkg/angular/demo/helloworld/web/helloworld.dart

Index: third_party/pkg/angular/demo/helloworld/web/helloworld.dart
diff --git a/third_party/pkg/angular/demo/helloworld/web/helloworld.dart b/third_party/pkg/angular/demo/helloworld/web/helloworld.dart
deleted file mode 100644
index 338e33bb6c5900a0b3f4b257afba8fd98a4118a0..0000000000000000000000000000000000000000
--- a/third_party/pkg/angular/demo/helloworld/web/helloworld.dart
+++ /dev/null
@@ -1,20 +0,0 @@
-import 'package:angular/angular.dart';
-
-// This annotation allows Dart to shake away any classes
-// not used from Dart code nor listed in another @MirrorsUsed.
-//
-// If you create classes that are referenced from the Angular
-// expressions, you must include a library target in @MirrorsUsed.
-@MirrorsUsed(override: '*')
-import 'dart:mirrors';
-
-@NgController(
-    selector: '[hello-world-controller]',
-    publishAs: 'ctrl')
-class HelloWorldController {
-  String name = "world";
-}
-
-main() {
-  ngBootstrap(module: new Module()..type(HelloWorldController));
-}