Load web tests using the plugin infrastructure.

lib/src/runner.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.
 
 import 'dart:async';
 import 'dart:io';
 
 import 'package:async/async.dart';
 
 import 'backend/group.dart';
@@ skipping 153 matching lines @@
     if (_suiteSubscription != null) _suiteSubscription.cancel();
     _suiteSubscription = null;
 
     // Make sure we close the engine *before* the loader. Otherwise,
     // LoadSuites provided by the loader may get into bad states.
     //
     // We close the loader's browsers while we're closing the engine because
     // browser tests don't store any state we care about and we want them to
     // shut down without waiting for their tear-downs.
     await Future.wait([
-      _loader.closeBrowsers(),
+      _loader.closeEphemeral(),
       _engine.close()
     ]);
     if (timer != null) timer.cancel();
     await _loader.close();
   });
 
   /// Return a stream of [LoadSuite]s in [_config.paths].
   ///
   /// Only tests that match [_config.pattern] will be included in the
   /// suites once they're loaded.
@@ skipping 121 matching lines @@
       await _debugOperation.valueOrCancellation();
     }).listen(null);
 
     var results = await Future.wait([
       _suiteSubscription.asFuture().then((_) => _engine.suiteSink.close()),
       _engine.run()
     ]);
     return results.last;
   }
 }