Use pub_server package

app/lib/appengine_repository.dart

 // Copyright (c) 2014, 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_dartlang_org.gcloud_repository;
 
 import 'dart:async';
 import 'dart:io';
 
 import 'package:gcloud/db.dart';
 import 'package:gcloud/storage.dart';
 import 'package:gcloud/service_scope.dart' as ss;
-import 'package:pubserver/repository.dart';
+import 'package:pub_server/repository.dart';
 import 'package:logging/logging.dart';
 import 'package:uuid/uuid.dart';
 
 import 'models.dart' as models;
 import 'model_properties.dart';
 import 'upload_signer_service.dart';
 import 'utils.dart';
 
 final Logger _logger = new Logger('pub.cloud_repository');
 
@@ skipping 381 matching lines @@
   Future upload(String package, String version, List<int> tarball) {
     var object = _tarballObject(package, version);
     return bucket.writeBytes(
         object, tarball, predefinedAcl: PredefinedAcl.publicRead);
   }
 
   // TODO: Do we need some kind of escaping here?
   String _tarballObject(String package, String version)
       => '$prefix/$package-$version.tar.gz';
 }