Get rid of old redundant methods in io.dart.

utils/pub/oauth2.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.
 
 library oauth2;
 
 import 'dart:async';
 import 'dart:io';
 import 'dart:uri';
 
 // TODO(nweiz): Make this a "package:" URL, or something nicer than this.
 import '../../pkg/oauth2/lib/oauth2.dart';
+import '../../pkg/path/lib/path.dart' as path;
+
 import 'http.dart';
 import 'io.dart';
 import 'log.dart' as log;
 import 'system_cache.dart';
 import 'utils.dart';
 
 export '../../pkg/oauth2/lib/oauth2.dart';
 
 /// The pub client's OAuth2 identifier.
 final _identifier = '818368855108-8grd2eg9tj9f38os6f1urbcvsq399u8n.apps.'
@@ skipping 108 matching lines @@
         'Obtaining new credentials...');
     return null; // null means re-authorize.
   }
 }
 
 /// Save the user's OAuth2 credentials to the in-memory cache and the
 /// filesystem.
 void _saveCredentials(SystemCache cache, Credentials credentials) {
   log.fine('Saving OAuth2 credentials.');
   _credentials = credentials;
-  var path = _credentialsFile(cache);
-  ensureDir(dirname(path));
-  writeTextFile(path, credentials.toJson(), dontLogContents: true);
+  var credentialsPath = _credentialsFile(cache);
+  ensureDir(path.dirname(credentialsPath));
+  writeTextFile(credentialsPath, credentials.toJson(), dontLogContents: true);
 }
 
 /// The path to the file in which the user's OAuth2 credentials are stored.
 String _credentialsFile(SystemCache cache) =>
   join(cache.rootDir, 'credentials.json');
 
 /// Gets the user to authorize pub as a client of pub.dartlang.org via oauth2.
 /// Returns a Future that will complete to a fully-authorized [Client].
 Future<Client> _authorize() {
   // Allow the tests to inject their own token endpoint URL.
@@ skipping 40 matching lines @@
       'Pub needs your authorization to upload packages on your behalf.\n'
       'In a web browser, go to $authUrl\n'
       'Then click "Allow access".\n\n'
       'Waiting for your authorization...');
 
   return completer.future.then((client) {
     log.message('Successfully authorized.\n');
     return client;
   });
 }