"Reverting 23366"

tools/dom/templates/html/impl/impl_Element.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;
 
 class _ChildrenElementList extends ListBase<Element> {
   // Raw Element.
   final Element _element;
   final HtmlCollection _childElements;
@@ skipping 40 matching lines @@
 
     for (Element element in iterable) {
       _element.append(element);
     }
   }
 
   void sort([int compare(Element a, Element b)]) {
     throw new UnsupportedError('Cannot sort element lists');
   }
 
-  void removeWhere(bool test(Element element)) {
-    _filter(test, false);
-  }
-
-  void retainWhere(bool test(Element element)) {
-    _filter(test, true);
-  }
-
-  void _filter(bool test(var element), bool retainMatching) {
-    List removed = [];
-    if (retainMatching) {
-      removed = _element.children.where((e) => !test(e));
-    } else {
-      removed = _element.children.where(test);
-    }
-    for (var e in removed) e.remove();
-  }
-
   void setRange(int start, int end, Iterable<Element> iterable,
                 [int skipCount = 0]) {
     throw new UnimplementedError();
   }
 
   void replaceRange(int start, int end, Iterable<Element> iterable) {
     throw new UnimplementedError();
   }
 
   void fillRange(int start, int end, [Element fillValue]) {
@@ skipping 965 matching lines @@
   const ScrollAlignment._internal(this._value);
   toString() => 'ScrollAlignment.$_value';
 
   /// Attempt to align the element to the top of the scrollable area.
   static const TOP = const ScrollAlignment._internal('TOP');
   /// Attempt to center the element in the scrollable area.
   static const CENTER = const ScrollAlignment._internal('CENTER');
   /// Attempt to align the element to the bottom of the scrollable area.
   static const BOTTOM = const ScrollAlignment._internal('BOTTOM');
 }