Fix source_update_test on Chrome.

dart/site/try/src/shadow_root.dart

 // Copyright (c) 2014, 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.
 
 library trydart.shadow_root;
 
 import 'dart:html';
 
+import 'selection.dart' show
+    TrySelection;
+
+import 'html_to_text.dart' show
+    htmlToText;
+
 void setShadowRoot(Element node, text) {
   if (text is String) {
     text = new Text(text);
   }
   getShadowRoot(node)
       ..nodes.clear()
       ..append(text);
 }
 
 
@@ skipping 13 matching lines @@
 }
 
 void removeShadowRootPolyfill(Element root) {
   if (!ShadowRoot.supported) {
     List<Node> polyfill = root.querySelectorAll('[try-dart-shadow-root]');
     for (Element element in polyfill) {
       element.remove();
     }
   }
 }
+
+String getText(Element node) {
+  if (ShadowRoot.supported) return node.text;
+  StringBuffer buffer = new StringBuffer();
+  htmlToText(node, buffer, new TrySelection.empty(node));
+  return '$buffer';

[ahe, 2014/05/08 09:07:53]

Firefox or htmlToText adds one too many newlines to the buffer.  I'll
investigate in the next CL.

+}