Fixing up WebComponents types & tests

sdk/lib/html/dart2js/html_dart2js.dart

Index: sdk/lib/html/dart2js/html_dart2js.dart
diff --git a/sdk/lib/html/dart2js/html_dart2js.dart b/sdk/lib/html/dart2js/html_dart2js.dart
index 5da1bdfb5b877687ba9ba83831c2a3a3588f7590..9d475d6046cdc9479c18478d62b1a86f93066897 100644
--- a/sdk/lib/html/dart2js/html_dart2js.dart
+++ b/sdk/lib/html/dart2js/html_dart2js.dart
@@ -7921,7 +7921,9 @@ abstract class Element extends Node implements ElementTraversal native "*Element
   void $dom_setAttributeNS(String namespaceURI, String qualifiedName, String value) native;
 
   /// @domName Element.webkitCreateShadowRoot; @docsEditable true
-  ShadowRoot webkitCreateShadowRoot() native;
+  @JSName('webkitCreateShadowRoot')
+  @SupportedBrowser(SupportedBrowser.CHROME, '25') @Experimental()

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

no line break on this one, but the others are fine?

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

Similar issue that came up in an earlier CL- it's how we do member annotations
in Dart2JS. Needs an intrusive refactoring, class annotations and Dartium
annotations are done correctly.

+  ShadowRoot createShadowRoot() native;
 
   /// @domName Element.webkitMatchesSelector; @docsEditable true
   @JSName('webkitMatchesSelector')
@@ -15925,8 +15927,15 @@ class SelectElement extends Element native "*HTMLSelectElement" {
 
 
 /// @domName HTMLShadowElement; @docsEditable true
+@SupportedBrowser(SupportedBrowser.CHROME, '25')
+@Experimental()
 class ShadowElement extends Element native "*HTMLShadowElement" {
 
+  /**
+   * Checks if this type is supported on the current platform
+   */
+  static bool get supported => Element.isTagSupported('shadow');
+
   /// @domName HTMLShadowElement.olderShadowRoot; @docsEditable true
   final ShadowRoot olderShadowRoot;
 
@@ -15941,6 +15950,8 @@ class ShadowElement extends Element native "*HTMLShadowElement" {
 
 
 /// @domName ShadowRoot
+@SupportedBrowser(SupportedBrowser.CHROME, '25')
+@Experimental()
 class ShadowRoot extends DocumentFragment native "*ShadowRoot" {
 
   /// @domName ShadowRoot.activeElement; @docsEditable true
@@ -15978,7 +15989,7 @@ class ShadowRoot extends DocumentFragment native "*ShadowRoot" {
   DomSelection getSelection() native;
 
   static bool get supported =>
-      JS('bool', '!!(window.ShadowRoot || window.WebKitShadowRoot || Element.prototype.webkitCreateShadowRoot)');
+      JS('bool', '!!(Element.prototype.webkitCreateShadowRoot)');
 }
 // 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