Revert "Remove _WorkerStub hack to make benefit closing an isolate."

dart/tests/isolate/isolate_stress_test.dart

Index: dart/tests/isolate/isolate_stress_test.dart
diff --git a/dart/tests/isolate/isolate_stress_test.dart b/dart/tests/isolate/isolate_stress_test.dart
deleted file mode 100644
index 685ea59ed88d4b0c5a20fe9ccda80bb26edace62..0000000000000000000000000000000000000000
--- a/dart/tests/isolate/isolate_stress_test.dart
+++ /dev/null
@@ -1,62 +0,0 @@
-// Copyright (c) 2013, 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.
-
-// This test creates a lot of isolates.  This is meant to exhaust
-// resources if the isolates aren't closed correctly (which happened
-// in dart2js).
-
-import 'dart:async';
-import 'dart:html';
-import 'dart:isolate';
-
-// TODO(ahe): Remove dependency on unittest when tests are wrapperless.
-import 'package:unittest/unittest.dart';
-import 'package:unittest/html_config.dart';
-
-const bool IS_UNITTEST = true;
-
-worker() {
-  port.receive((String uri, SendPort replyTo) {
-    replyTo.send('Hello from Worker');
-    port.close();
-  });
-}
-
-main() {
-  useHtmlConfiguration();
-  try {
-    // Create a Worker to confuse broken isolate implementation in dart2js.
-    new Worker('data:application/javascript,').terminate();
-  } catch (e) {
-    // Ignored.
-  }
-  var doneClosure;
-  int isolateCount = 0;
-  spawnMany(reply) {
-    if (reply != 'Hello from Worker') {
-      throw new Exception('Unexpected reply from worker: $reply');
-    }
-    if (++isolateCount > 200) {
-      if (IS_UNITTEST) {
-        doneClosure();
-      } else {
-        port.close();
-        window.postMessage('unittest-suite-done', '*');
-      }
-      return;
-    }
-    spawnFunction(worker).call('').then(spawnMany);
-    print('isolateCount = $isolateCount');
-  }
-
-  if (IS_UNITTEST) {
-    test('stress test', () {
-      spawnMany('Hello from Worker');
-      doneClosure = expectAsync0(() {});
-    });
-  } else {
-    spawnMany('Hello from Worker');
-    window.postMessage('unittest-suite-wait-for-done', '*');
-  }
-}