Big merge from experimental to bleeding edge.

tools/dom/src/AttributeMap.dart

 // 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 html;
 
 abstract class _AttributeMap implements Map<String, String> {
   final Element _element;
 
   _AttributeMap(this._element);
@@ skipping 143 matching lines @@
  */
 class _DataAttributeMap implements Map<String, String> {
 
   final Map<String, String> $dom_attributes;
 
   _DataAttributeMap(this.$dom_attributes);
 
   // interface Map
 
   // TODO: Use lazy iterator when it is available on Map.
-  bool containsValue(String value) => values.some((v) => v == value);
+  bool containsValue(String value) => values.any((v) => v == value);
 
   bool containsKey(String key) => $dom_attributes.containsKey(_attr(key));
 
   String operator [](String key) => $dom_attributes[_attr(key)];
 
   void operator []=(String key, value) {
     $dom_attributes[_attr(key)] = '$value';
   }
 
   String putIfAbsent(String key, String ifAbsent()) =>
@@ skipping 39 matching lines @@
   int get length => keys.length;
 
   // TODO: Use lazy iterator when it is available on Map.
   bool get isEmpty => length == 0;
 
   // Helpers.
   String _attr(String key) => 'data-$key';
   bool _matches(String key) => key.startsWith('data-');
   String _strip(String key) => key.substring(5);
 }