Get rid of all the library tags.

lib/src/runner/browser/static/host.dart

 // Copyright (c) 2015, 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 test.runner.browser.host;
-
 import 'dart:async';
 import 'dart:convert';
 import 'dart:html';
 import 'dart:js' as js;
 
 import 'package:stack_trace/stack_trace.dart';
 import 'package:test/src/util/multi_channel.dart';
 import 'package:test/src/util/stream_channel.dart';
 
 /// The iframes created for each loaded test suite, indexed by the suite id.
@@ skipping 139 matching lines @@
     if (!readyCompleter.isCompleted) readyCompleter.complete();
   });
 
   outputController.stream.listen((message) async {
     await readyCompleter.future;
     iframe.contentWindow.postMessage(message, window.location.origin);
   });
 
   return new StreamChannel(inputController.stream, outputController.sink);
 }