[Effen] Move 'flex' out of CSS also. (mark II)

sky/tests/framework/basic.sky

Index: sky/tests/framework/basic.sky
diff --git a/sky/tests/framework/basic.sky b/sky/tests/framework/basic.sky
index 244057a6420f02b35d0b80c7184fe367fbc62fdd..efe8e0cff43e367f4070c06393402dd43a0e0549 100644
--- a/sky/tests/framework/basic.sky
+++ b/sky/tests/framework/basic.sky
@@ -8,7 +8,13 @@ import 'dart:sky.internals' as internals;
 void main() {
   new TestApp();
   runAfterDisplay(() {
-    internals.notifyTestComplete(serializeNode(document.lastChild.previousSibling) + serializeNode(document.lastChild));
+    var result = serializeNode(document.lastChild.previousSibling) + serializeNode(document.lastChild);
+    try {
+      internals.notifyTestComplete(result);
+    } catch (e) {
+      print(e);
+      print(result);
+    }
   });
 }
 </script>