Moved most of html lib generating scripts into tools.

tools/dom/src/_ListIterators.dart

 // Copyright (c) 2011, 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 html;
 
 // Iterator for arrays with fixed size.
 class FixedSizeListIterator<T> extends _VariableSizeListIterator<T> {
   FixedSizeListIterator(List<T> array)
       : super(array),
@@ skipping 15 matching lines @@
   T next() {
     if (!hasNext) {
       throw new StateError("No more elements");
     }
     return _array[_pos++];
   }
 
   final List<T> _array;
   int _pos;
 }