Add PositionOptions type to registry.

lib/dom/dom.dart

 #library('dom');
 
 // 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.
 
 // DO NOT EDIT
 // Auto-generated Dart DOM library with no implementation.
 
 
@@ skipping 3124 matching lines @@
 // 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.
 
 // WARNING: Do not edit - generated code.
 
 interface Geolocation {
 
   void clearWatch(int watchId);
 
-  void getCurrentPosition(PositionCallback successCallback, [PositionErrorCallback errorCallback]);
+  void getCurrentPosition(PositionCallback successCallback, [PositionErrorCallback errorCallback, Object options]);
 
-  int watchPosition(PositionCallback successCallback, [PositionErrorCallback errorCallback]);
+  int watchPosition(PositionCallback successCallback, [PositionErrorCallback errorCallback, Object options]);
 }
 // 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.
 
 // WARNING: Do not edit - generated code.
 
 interface Geoposition {
 
   final Coordinates coords;
@@ skipping 9797 matching lines @@
 // 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.
 
 Window get window() => _dummy();
 
 // TODO(vsm): Remove when prefixes are supported.
 Window get dom_window() => _dummy();
 
 Document get document() => _dummy();