Move pub into sdk/lib/_internal.

sdk/lib/_internal/pub/test/pub_uploader_test.dart

 // Copyright (c) 2013, 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.
 
 library pub_uploader_test;
 
 import 'dart:io';
 import 'dart:json' as json;
 
 import 'package:scheduled_test/scheduled_process.dart';
 import 'package:scheduled_test/scheduled_server.dart';
 import 'package:scheduled_test/scheduled_test.dart';
 
-import '../../pub/io.dart';
-import '../../pub/utils.dart';
+import '../lib/src/io.dart';
+import '../lib/src/utils.dart';
 import 'descriptor.dart' as d;
 import 'test_pub.dart';
 
 final USAGE_STRING = '''
     Manage uploaders for a package on pub.dartlang.org.
 
     Usage: pub uploader [options] {add/remove} <email>
     --server     The package server on which the package is hosted
                  (defaults to "https://pub.dartlang.org")
 
@@ skipping 149 matching lines @@
     server.handle('DELETE', '/packages/pkg/uploaders/email.json', (request) {
       request.response.write("{not json");
       request.response.close();
     });
 
     expect(pub.nextErrLine(), completion(equals('Invalid server response:')));
     expect(pub.nextErrLine(), completion(equals('{not json')));
     pub.shouldExit(1);
   });
 }