SendPort + ReceivePort changes:

tests/isolate/src/SerializationTest.dart

 // Copyright (c) 2011, 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.
 
 // Dart test program for testing serialization of messages without spawning
 // isolates.
 
 // ---------------------------------------------------------------------------
 // Serialization test.
 // ---------------------------------------------------------------------------
@@ skipping 18 matching lines @@
   copyAndVerify([[]], f);
   copyAndVerify([1, []], f);
   copyAndVerify({}, f);
   copyAndVerify({ 'a': 3 }, f);
   copyAndVerify({ 'a': 3, 'b': 5, 'c': 8 }, f);
   copyAndVerify({ 'a': [1, 2] }, f);
   copyAndVerify({ 'b': { 'c' : 99 } }, f);
   copyAndVerify([ { 'a': 499 }, { 'b': 42 } ], f);
 
   var port = new ReceivePort();
-  var transformed = f(port);
-  Expect.equals(port.toSendPort(), transformed);
-  port.close();
-
-  port = new ReceivePort.singleShot();
-  transformed = f(port);
-  Expect.equals(port.toSendPort(), transformed);
+  Expect.throws(() => f(port));
   port.close();
 
   var a = [ 1, 3, 5 ];
   var b = { 'b': 49 };
   var c = [ a, b, a, b, a ];
   var copied = f(c);
   verify(c, copied);
   Expect.isFalse(c === copied);
   Expect.isTrue(copied[0] === copied[2]);
   Expect.isTrue(copied[0] === copied[4]);
@@ skipping 18 matching lines @@
     Expect.isTrue(copy is Map);
     Expect.equals(o.length, copy.length);
     o.forEach((key, value) {
       Expect.isTrue(copy.containsKey(key));
       verify(value, copy[key]);
     });
   } else {
     Expect.fail("Unexpected object encountered");
   }
 }