Use @Native annotation on dart2js DOM native classes

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

 // 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.
 
 part of $LIBRARYNAME;
 
 @DocsEditable()
-$(ANNOTATIONS)$(CLASS_MODIFIERS)class $CLASSNAME$EXTENDS$IMPLEMENTS$NATIVESPEC {
+$(ANNOTATIONS)$(NATIVESPEC)$(CLASS_MODIFIERS)class $CLASSNAME$EXTENDS$IMPLEMENTS {
 
   @DomName('Geolocation.getCurrentPosition')
   Future<Geoposition> getCurrentPosition({bool enableHighAccuracy,
       Duration timeout, Duration maximumAge}) {
     var options = {};
     if (enableHighAccuracy != null) {
       options['enableHighAccuracy'] = enableHighAccuracy;
     }
     if (timeout != null) {
       options['timeout'] = timeout.inMilliseconds;
@@ skipping 77 matching lines @@
  * which has further oddities.
  */
 class _GeopositionWrapper implements Geoposition {
   var _ptr;
   _GeopositionWrapper(this._ptr);
 
   Coordinates get coords => JS('Coordinates', '#.coords', _ptr);
   int get timestamp => JS('int', '#.timestamp', _ptr);
 }
 $endif
-
-