Move pub into sdk/lib/_internal.

utils/tests/pub/oauth2/with_no_credentials_authenticates_and_saves_credentials_test.dart

-// Copyright (c) 2012, 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.
-
-import 'dart:io';
-
-import 'package:scheduled_test/scheduled_test.dart';
-import 'package:scheduled_test/scheduled_server.dart';
-
-import '../../../pub/io.dart';
-import '../../../pub/utils.dart';
-import '../descriptor.dart' as d;
-import '../test_pub.dart';
-import 'utils.dart';
-
-main() {
-  initConfig();
-  integration('with no credentials.json, authenticates and saves '
-      'credentials.json', () {
-    d.validPackage.create();
-
-    var server = new ScheduledServer();
-    var pub = startPublish(server);
-    confirmPublish(pub);
-    authorizePub(pub, server);
-
-    server.handle('GET', '/packages/versions/new.json', (request) {
-      expect(request.headers.value('authorization'),
-          equals('Bearer access token'));
-
-      request.response.close();
-    });
-
-    // After we give pub an invalid response, it should crash. We wait for it to
-    // do so rather than killing it so it'll write out the credentials file.
-    pub.shouldExit(1);
-
-    d.credentialsFile(server, 'access token').validate();
-  });
-}