Fixing up WebComponents types & tests

tools/dom/templates/html/impl/impl_ShadowRoot.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.
 
 // WARNING: Do not edit - generated code.
 
 part of html;
 
-/// @domName $DOMNAME
+/// @domName $DOMNAME$ANNOTATIONS
 class $CLASSNAME$EXTENDS$IMPLEMENTS$NATIVESPEC {
 $!MEMBERS
 $if DART2JS
   static bool get supported =>
-      JS('bool', '!!(window.ShadowRoot || window.WebKitShadowRoot || Element.prototype.webkitCreateShadowRoot)');

[Emily Fortuna, 2013/01/02 18:54:04]

why change this line?

[blois, 2013/01/02 21:28:41]

This check was just expanded when the constructor changed to be the
createShadowRoot method. Since the method is needed to create the object, it's
the critical item.

The other entries were just stale checks.

+      JS('bool', '!!(Element.prototype.webkitCreateShadowRoot)');
 $else
   static bool get supported => _Utils.shadowRootSupported(window.document);
 $endif
 }