Get rid of all the library tags.

lib/browser_client.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 http.browser_client;
-
 import 'dart:async';
 import 'dart:html';
 
 import 'package:stack_trace/stack_trace.dart';
 
 import 'src/base_client.dart';
 import 'src/base_request.dart';
 import 'src/byte_stream.dart';
 import 'src/exception.dart';
 import 'src/streamed_response.dart';
@@ skipping 78 matching lines @@
 
   /// Closes the client.
   ///
   /// This terminates all active requests.
   void close() {
     for (var xhr in _xhrs) {
       xhr.abort();
     }
   }
 }