Use pub_server package

app/lib/upload_signer_service.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.
 
 library pub_dartlang_org.upload_signer_service;
 
 import 'dart:async';
 import 'dart:convert';
 
 import 'package:crypto/crypto.dart';
 import 'package:googleapis_auth/src/crypto/rsa_sign.dart';
 import 'package:googleapis_auth/src/crypto/pem.dart' as pem;
 import 'package:googleapis_auth/src/crypto/rsa.dart' as rsa;
 
 import 'package:gcloud/db.dart';
 import 'package:gcloud/service_scope.dart' as ss;
-import 'package:pubserver/repository.dart';
+import 'package:pub_server/repository.dart';
 
 import 'models.dart';
 
 /// The registered [UploadSignerService] object.
 UploadSignerService get uploadSigner => ss.lookup(#_url_signer);
 
 /// Register a new [UploadSignerService] object into the current service
 /// scope.
 void registerUploadSigner(UploadSignerService uploadSigner)
     => ss.register(#_url_signer, uploadSigner);
@@ skipping 64 matching lines @@
         'Expires' : expirationString,
         'GoogleAccessId' : serviceAccountEmail,
         'policy' : policyString,
         'signature' : signatureString,
         'success_action_redirect' : successRedirectUrl,
     };
 
     return new AsyncUploadInfo(UploadUrl, fields);
   }
 }