Move function serialization to sync ports.

tests/html/js_interop_func_passing_test.dart

Index: tests/html/js_interop_func_passing_test.dart
diff --git a/tests/html/js_interop_2_test.dart b/tests/html/js_interop_func_passing_test.dart
similarity index 77%
copy from tests/html/js_interop_2_test.dart
copy to tests/html/js_interop_func_passing_test.dart
index 87e489eef5dcd04cbbae922c58a765559bdb4bcf..d65a307282bedefcc1b7231d74d7051debbd2999 100644
--- a/tests/html/js_interop_2_test.dart
+++ b/tests/html/js_interop_func_passing_test.dart
@@ -2,7 +2,7 @@
 // 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('JsInterop2Test');
+#library('JsInteropFuncPassingTest');
 #import('../../lib/unittest/unittest.dart');
 #import('../../lib/unittest/html_config.dart');
 #import('dart:html');
@@ -16,27 +16,24 @@ injectSource(code) {
 }
 
 var isolateTest = """
-  function test(data) {
-    if (data == 'sent')
-      return 'received';
-  }
-
   var port = new ReceivePortSync();
-  port.receive(test);
+  port.receive(function (f) {
+    return f('fromJS');
+  });
   window.registerPort('test', port.toSendPort());
 """;
 
 main() {
   useHtmlConfiguration();
 
-  test('dart-to-js-ports', () {
+  test('dart-to-js-function', () {
     injectSource(isolateTest);
 
     SendPortSync port = window.lookupPort('test');
-    var result = port.callSync('sent');
+    var result = port.callSync((msg) {
+      Expect.equals('fromJS', msg);
+      return 'received';
+    });
     Expect.equals('received', result);
-
-    result = port.callSync('ignore');
-    Expect.isNull(result);
   });
 }