Removing Element.createdCallback

tests/html/custom/attribute_changed_callback_test.dart

Index: tests/html/custom/attribute_changed_callback_test.dart
diff --git a/tests/html/custom/attribute_changed_callback_test.dart b/tests/html/custom/attribute_changed_callback_test.dart
index 1bcc4530d3829a603dfbc6519b5c89474517a637..69d93576f91639727228bc9f43df6a37f90f0574 100644
--- a/tests/html/custom/attribute_changed_callback_test.dart
+++ b/tests/html/custom/attribute_changed_callback_test.dart
@@ -25,14 +25,12 @@ class A extends HtmlElement {
 class B extends HtmlElement {
   static final tag = 'x-b';
   factory B() => new Element.tag(tag);
-  B.created() : super.created();
-
-  static var invocations = [];
-
-  void createdCallback() {
+  B.created() : super.created() {
     invocations.add('created');
   }
 
+  static var invocations = [];
+
   void attributeChanged(name, oldValue, newValue) {
     invocations.add('$name: $oldValue => $newValue');
   }