upgrade dependencies, including migration to package:test

test/all_tests.dart

 // Copyright (c) 2015, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 /// Meta-test that runs all tests we have written.
 library dev_compiler.test.all_tests;
 
-import 'package:unittest/unittest.dart';
+import 'package:test/test.dart';
 
 import 'checker/checker_test.dart' as checker_test;
 import 'checker/inferred_type_test.dart' as inferred_type_test;
 import 'codegen_test.dart' as codegen_test;
 import 'end_to_end_test.dart' as e2e;
 import 'report_test.dart' as report_test;
 import 'runtime/dart_runtime_test.dart' as runtime_test;
 import 'dependency_graph_test.dart' as dependency_graph_test;
 
-import 'test_util.dart';
-
-void main(args) {
-  configureTest();
-
+void main() {
   group('end-to-end', e2e.main);
   group('inferred types', inferred_type_test.main);
   group('checker', checker_test.main);
   group('report', report_test.main);
   group('runtime', runtime_test.main);
   group('dependency_graph', dependency_graph_test.main);
-  group('codegen', () => codegen_test.main(args));
-  var args2 = new List.from((args == null) ? [] : args, growable: true);
-  args2.add("--dart-gen");
-  group('dart_codegen', () => codegen_test.main(args2));
+  group('codegen', () => codegen_test.main([]));
+  group('dart_codegen', () => codegen_test.main(['--dart-gen']));
 }