Isolates: allow sending of arbitrary objects in dart2js.

tests/isolate/function_send_test.dart

 // Copyright (c) 2014, 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:isolate";
 import "dart:async";
 import "package:expect/expect.dart";
 import "package:async_helper/async_helper.dart";
 
 void toplevel(port, message) { port.send("toplevel:$message"); }
@@ skipping 135 matching lines @@
 void testUnsendable(name, func) {
   asyncStart();
   Isolate.spawn(nop, func).then((v) => throw "allowed spawn direct?",
                                 onError: (e,s){ asyncEnd(); });
   asyncStart();
   Isolate.spawn(nop, [func]).then((v) => throw "allowed spawn wrapped?",
                                   onError: (e,s){ asyncEnd(); });
 
   asyncStart();
   var noReply = new RawReceivePort((_) { throw "Unexpected message: $_"; });
-  // Currently succeedes incorrectly in dart2js.
-  Expect.throws(() {                /// 01: ok
-    noReply.sendPort.send(func);    /// 01: continued
-  }, null, "send direct");          /// 01: continued
-  Expect.throws(() {                /// 01: continued
-    noReply.sendPort.send([func]);  /// 01: continued
-  }, null, "send wrapped");         /// 01: continued
+  Expect.throws(() {
+    noReply.sendPort.send(func);
+  }, null, "send direct");
+  Expect.throws(() {
+    noReply.sendPort.send([func]);
+  }, null, "send wrapped");
   scheduleMicrotask(() {
     noReply.close();
     asyncEnd();
   });
 
   // Try sending through other isolate.
   asyncStart();
   echoPort((v) { Expect.equals(0, v); })
     .then((p) {
       try {
         p.send(func);
       } finally {
         p.send(0);   // Closes echo port.
       }
     })
     .then((p) => throw "unreachable 2",
           onError: (e, s) {asyncEnd();});
 }
 
 void nop(_) {}
 
 void callFunc(message) {
   message[0](message[1], message[2]);
 }