Update Timer API to take the callback as the last parameter.

tests/standalone/src/io/TimerCancel2Test.dart

Index: tests/standalone/src/io/TimerCancel2Test.dart
diff --git a/tests/standalone/src/io/TimerCancel2Test.dart b/tests/standalone/src/io/TimerCancel2Test.dart
index 22066bba2b819affefd65b74054a60ba71c72ddc..7c830009ee46b9e2b07c2b75b5b6e71a1d428bfe 100644
--- a/tests/standalone/src/io/TimerCancel2Test.dart
+++ b/tests/standalone/src/io/TimerCancel2Test.dart
@@ -1,4 +1,4 @@
-// Copyright (c) 2011, the Dart project authors.  Please see the AUTHORS file
+// Copyright (c) 2012, 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.
 
@@ -13,7 +13,7 @@ class TimerCancel2Test {
       cancelTimer.cancel();
     }
 
-    cancelTimer = new Timer.repeating(cancelHandler, 1);
+    cancelTimer = new Timer.repeating(1, cancelHandler);
   }
 
   static void testMain() {