Format all files under tools and utils directory.

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> implements Iterator<T> {
   final List<T> _array;
-  final int _length;  // Cache array length for faster access.
+  final int _length; // Cache array length for faster access.
   int _position;
   T _current;
-  
+
   FixedSizeListIterator(List<T> array)
       : _array = array,
         _position = -1,
         _length = array.length;
 
   bool moveNext() {
     int nextPosition = _position + 1;
     if (nextPosition < _length) {
       _current = _array[nextPosition];
       _position = nextPosition;
@@ skipping 24 matching lines @@
       _position = nextPosition;
       return true;
     }
     _current = null;
     _position = _array.length;
     return false;
   }
 
   T get current => _current;
 }