Fix source_update_test on Chrome.

dart/site/try/src/shadow_root.dart

Index: dart/site/try/src/shadow_root.dart
diff --git a/dart/site/try/src/shadow_root.dart b/dart/site/try/src/shadow_root.dart
index 9ba086fac5fd36e0583bb6d568588473d896ce87..e1cd9a1658ed4cb3d8d2120b5daf0b26068cd4bd 100644
--- a/dart/site/try/src/shadow_root.dart
+++ b/dart/site/try/src/shadow_root.dart
@@ -6,6 +6,12 @@ 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);
@@ -39,3 +45,10 @@ void removeShadowRootPolyfill(Element root) {
     }
   }
 }
+
+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.

+}