Removing older lifecycle events

sdk/lib/html/dart2js/html_dart2js.dart

Index: sdk/lib/html/dart2js/html_dart2js.dart
diff --git a/sdk/lib/html/dart2js/html_dart2js.dart b/sdk/lib/html/dart2js/html_dart2js.dart
index eef7e97a92a8d7e44478a0894adf9ca3eb8f098a..6f3ce7442683c967999f28e03c7ebd177f11e1f3 100644
--- a/sdk/lib/html/dart2js/html_dart2js.dart
+++ b/sdk/lib/html/dart2js/html_dart2js.dart
@@ -32000,12 +32000,6 @@ void _registerCustomElement(context, document, String tag, Type type,
   JS('void', '#.attributeChangedCallback = #', properties,
       JS('=Object', '{value: #}', _makeCallbackMethod3(_callAttributeChanged)));
 
-  // TODO(blois): Bug 13220- remove once transition is complete
-  JS('void', '#.enteredDocumentCallback = #', properties,
-      JS('=Object', '{value: #}', _makeCallbackMethod(_callEnteredView)));
-  JS('void', '#.leftDocumentCallback = #', properties,
-      JS('=Object', '{value: #}', _makeCallbackMethod(_callLeftView)));
-
   var baseProto = JS('=Object', '#.prototype', baseConstructor);
   var proto = JS('=Object', 'Object.create(#, #)', baseProto, properties);