Remove streamSpawnUri and mangler.

tests/isolate/global_error_handler2_test.dart

 // 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.
 
-library run_async_test;
-
 import 'dart:async';
 import 'dart:isolate';
 
-void startTest(SendPort finishPort, replyPort) {
-  int invokedCallbacks = 0;
-
-  for (int i = 0; i < 100; i++) {
-    runAsync(() {
-      invokedCallbacks++;
-      if (invokedCallbacks == 100) finishPort.send("done");
-      if (i == 50) throw new RuntimeError("ignore exception");
-    });
-  }
-}
-
 runTest() {
-  port.receive(startTest);
+  SendPort mainIsolate;
+  bool isFirst = true;
+  port.receive((msg, replyTo) {
+    if (isFirst) {
+      mainIsolate = msg;
+      isFirst = false;
+      throw new RuntimeError("ignore exception");
+    }
+    Expect.equals("message 2", msg);
+    mainIsolate.send("received");
+  });
 }
 
 bool globalErrorHandler(IsolateUnhandledException e) {
   return e.source is RuntimeError && e.source.message == "ignore exception";
 }
 
 main() {
+  // Make sure this test doesn't last longer than 2 seconds.
+  var timer = new Timer(const Duration(seconds: 2), () { throw "failed"; });
+
   var port = new ReceivePort();
-  var timer;
   SendPort otherIsolate = spawnFunction(runTest, globalErrorHandler);
   otherIsolate.send(port.toSendPort());
-  port.receive((msg, replyPort) { port.close(); timer.cancel(); });
-  timer = new Timer(const Duration(seconds: 2), () { throw "failed"; });
+  otherIsolate.send("message 2");
+  port.receive((msg, replyPort) {
+    Expect.equals("received", msg);
+    port.close();
+    timer.cancel();
+  });
 }