Expanded map options to named parameters.

tools/dom/templates/html/impl/impl_Notification.darttemplate

+// 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.
+
+part of $LIBRARYNAME;
+
+$(ANNOTATIONS)class $CLASSNAME$EXTENDS$IMPLEMENTS$NATIVESPEC {
+
+  factory $CLASSNAME(String title, {titleDir: null, body: null, bodyDir: null,
+      tag: null, iconUrl: null}) {
+
+    var parsedOptions = {
+      'titleDir': titleDir,

[blois, 2013/03/15 20:35:31]

Seems like the keys should not be set if the params are not specified.

[Emily Fortuna, 2013/03/15 21:01:52]

Fixed

+      'body': body,
+      'bodyDir': bodyDir,
+      'tag': tag,
+      'iconUrl': iconUrl
+    };
+
+    return $CLASSNAME._factory$CLASSNAME(title, parsedOptions);
+  }
+$!MEMBERS
+}