Remove support for attribute event listeners.

client/dom/generated/src/frog/Element.dart

Index: client/dom/generated/src/frog/Element.dart
diff --git a/client/dom/generated/src/frog/Element.dart b/client/dom/generated/src/frog/Element.dart
index 9769122af06630be2778d29234dc96da387e9196..e01dc90791de643d6fdff4711709b77384c8b2b9 100644
--- a/client/dom/generated/src/frog/Element.dart
+++ b/client/dom/generated/src/frog/Element.dart
@@ -27,94 +27,6 @@ class Element extends Node native "Element" {
 
   int offsetWidth;
 
-  EventListener onabort;
-
-  EventListener onbeforecopy;
-
-  EventListener onbeforecut;
-
-  EventListener onbeforepaste;
-
-  EventListener onblur;
-
-  EventListener onchange;
-
-  EventListener onclick;
-
-  EventListener oncontextmenu;
-
-  EventListener oncopy;
-
-  EventListener oncut;
-
-  EventListener ondblclick;
-
-  EventListener ondrag;
-
-  EventListener ondragend;
-
-  EventListener ondragenter;
-
-  EventListener ondragleave;
-
-  EventListener ondragover;
-
-  EventListener ondragstart;
-
-  EventListener ondrop;
-
-  EventListener onerror;
-
-  EventListener onfocus;
-
-  EventListener oninput;
-
-  EventListener oninvalid;
-
-  EventListener onkeydown;
-
-  EventListener onkeypress;
-
-  EventListener onkeyup;
-
-  EventListener onload;
-
-  EventListener onmousedown;
-
-  EventListener onmousemove;
-
-  EventListener onmouseout;
-
-  EventListener onmouseover;
-
-  EventListener onmouseup;
-
-  EventListener onmousewheel;
-
-  EventListener onpaste;
-
-  EventListener onreset;
-
-  EventListener onscroll;
-
-  EventListener onsearch;
-
-  EventListener onselect;
-
-  EventListener onselectstart;
-
-  EventListener onsubmit;
-
-  EventListener ontouchcancel;
-
-  EventListener ontouchend;
-
-  EventListener ontouchmove;
-
-  EventListener ontouchstart;
-
-  EventListener onwebkitfullscreenchange;
-
   Element previousElementSibling;
 
   int scrollHeight;