Enable Try Dart to run on IE11.

site/try/src/shadow_root.dart

Index: site/try/src/shadow_root.dart
===================================================================
--- site/try/src/shadow_root.dart	(revision 38416)
+++ site/try/src/shadow_root.dart	(working copy)
@@ -49,6 +49,16 @@
   return '$buffer';
 }
 
+/// Element.contains(n) doesn't work when n is node(Text) in IE,
+/// so this is brute-force implementation of contains.
+bool containsNode(parent, child) {
+    var p = child;
+    while (p != null && p != parent) {
+      p = p.parentNode;
+    }
+    return p != null;
+}
+
 /// Position [walker] at the last predecessor (that is, child of child of
 /// child...) of [node]. The next call to walker.nextNode will return the first
 /// node after [node].
@@ -60,7 +70,7 @@
   for (Node current = walker.nextNode();
        current != null;
        current = walker.nextNode()) {
-    if (!node.contains(current)) {
+    if (!containsNode(node, current)) {
       walker.previousNode();
       return;
     }
@@ -92,3 +102,4 @@
     }
   }
 }
+

[ahe, 2014/07/21 08:16:00]

Extra line.

[aam-me, 2014/07/21 12:20:38]

Done.