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

tools/dom/templates/html/impl/impl_HTMLTableSectionElement.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;
 
 @DocsEditable()
-$(ANNOTATIONS)$(NATIVESPEC)$(CLASS_MODIFIERS)class $CLASSNAME$EXTENDS$IMPLEMENTS {
+$(ANNOTATIONS)$(CLASS_MODIFIERS)class $CLASSNAME$EXTENDS$IMPLEMENTS$NATIVESPEC {
 
   @DomName('HTMLTableSectionElement.rows')
   List<TableRowElement> get rows =>
     new _WrappedList<TableRowElement>(_rows);
 
   TableRowElement addRow() {
     return insertRow(-1);
   }
 
   TableRowElement insertRow(int index) => _insertRow(index);
 
 $if DART2JS
   DocumentFragment createFragment(String html,
       {NodeValidator validator, NodeTreeSanitizer treeSanitizer}) {
     if (Range.supportsCreateContextualFragment) {
       return super.createFragment(
           html, validator: validator, treeSanitizer: treeSanitizer);
     }
     // IE9 workaround which does not support innerHTML on Table elements.
     var fragment = new DocumentFragment();
     var section = new TableElement().createFragment(
         html, validator: validator, treeSanitizer: treeSanitizer).nodes.single;
     fragment.nodes.addAll(section.nodes);
     return fragment;
   }
 $endif
 
 $!MEMBERS}