Get rid of all the library tags.

lib/src/barback/admin_server.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.barback.admin_server;
-
 import 'dart:async';
 import 'dart:io';
 
 import 'package:http_parser/http_parser.dart';
 import 'package:shelf/shelf.dart' as shelf;
 import 'package:shelf_web_socket/shelf_web_socket.dart';
 
 import '../io.dart';
 import '../log.dart' as log;
 import 'asset_environment.dart';
@@ skipping 45 matching lines @@
 
   /// Creates a web socket for [request] which should be an upgrade request.
   void _handleWebSocket(CompatibleWebSocket socket) {
     _webSockets.add(socket);
     var api = new WebSocketApi(socket, environment);
     api.listen()
         .whenComplete(() => _webSockets.remove(api))
         .catchError(addError);
   }
 }