Switch pkg packages, pub, and dartdoc to use package: imports.

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/pathos/lib/path.dart' as path;
+import 'package:oauth2/oauth2.dart';
+import 'package:pathos/path.dart' as path;
 
 import 'http.dart';
 import 'io.dart';
 import 'log.dart' as log;
 import 'safe_http_server.dart';
 import 'system_cache.dart';
 import 'utils.dart';
 
-export '../../pkg/oauth2/lib/oauth2.dart';
+export 'package:oauth2/oauth2.dart';
 
 /// The pub client's OAuth2 identifier.
 final _identifier = '818368855108-8grd2eg9tj9f38os6f1urbcvsq399u8n.apps.'
     'googleusercontent.com';
 
 /// The pub client's OAuth2 secret. This isn't actually meant to be kept a
 /// secret.
 final _secret = 'SWeqj8seoJW0w7_CpEPFLX0K';
 
 /// The URL to which the user will be directed to authorize the pub client to
@@ skipping 167 matching lines @@
         response.statusCode = 404;
         response.close();
       }
     });
   })
   .then((client) {
     log.message('Successfully authorized.\n');
     return client;
   });
 }