Revert "Use @Native annotation on dart2js DOM native classes"

tools/dom/templates/html/impl/impl_HashChangeEvent.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.
 
 // WARNING: Do not edit - generated code.
 
 part of $LIBRARYNAME;
-$(ANNOTATIONS)$(NATIVESPEC)$(CLASS_MODIFIERS)class $CLASSNAME$EXTENDS$IMPLEMENTS {
+$(ANNOTATIONS)$(CLASS_MODIFIERS)class $CLASSNAME$EXTENDS$IMPLEMENTS$NATIVESPEC {
   factory $CLASSNAME(String type,
       {bool canBubble: true, bool cancelable: true, String oldUrl,
       String newUrl}) {
     var event = document._createEvent("HashChangeEvent");
     event._initHashChangeEvent(type, canBubble, cancelable, oldUrl, newUrl);
     return event;
   }
 $!MEMBERS
 }