rename web_components -> web_ui

lib/web_ui.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.
 
 /**
  * This library exposes the types in [watcher], [safe_html], [templating] and
  * the [WebComponent] base class. See this article for more information about
  * this library: <http://www.dartlang.org/articles/dart-web-components/>.
  */
-library web_components;
+library web_ui;
 
 export 'watcher.dart';
 export 'safe_html.dart';
 export 'templating.dart';
 
 import 'dart:html';
 
 // Imported for the doc comment
 import 'watcher.dart' as watcher;
 import 'safe_html.dart' as safe_html;
@@ skipping 553 matching lines @@
 }
 
 /**
  * Set this to true to use native Shadow DOM if it is supported.
  * Note that this will change behavior of [WebComponent] APIs for tree
  * traversal.
  */
 bool useShadowDom = false;
 
 bool get _realShadowRoot => useShadowDom && ShadowRoot.supported;