Get rid of all the library tags.

lib/src/multi_headers.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 http_multi_server.multi_headers;
-
 import 'dart:io';
 
 /// A class that delegates header access and setting to many [HttpHeaders]
 /// instances.
 class MultiHeaders implements HttpHeaders {
   /// The wrapped headers.
   final Set<HttpHeaders> _headers;
 
   bool get chunkedTransferEncoding => _headers.first.chunkedTransferEncoding;
   set chunkedTransferEncoding(bool value) {
@@ skipping 97 matching lines @@
   String value(String name) => _headers.first.value(name);
 
   List<String> operator[](String name) => _headers.first[name];
 
   void clear() {
     for (var headers in _headers) {
       headers.clear();
     }
   }
 }