diff --git a/source b/source
index 9ced3df49bf..947d022212a 100644
--- a/source
+++ b/source
@@ -93855,6 +93855,10 @@ typedef <span>OnBeforeUnloadEventHandlerNonNull</span>? <dfn>OnBeforeUnloadEvent
     <tr><td><dfn data-export="" data-dfn-type="attribute" data-dfn-for="HTMLElement,Document,Window,GlobalEventHandlers"><code data-x="handler-ontoggle">ontoggle</code></dfn> <td> <code data-x="event-toggle">toggle</code>
     <tr><td><dfn data-export="" data-dfn-type="attribute" data-dfn-for="HTMLElement,Document,Window,GlobalEventHandlers"><code data-x="handler-onvolumechange">onvolumechange</code></dfn> <td> <code data-x="event-media-volumechange">volumechange</code>
     <tr><td><dfn data-export="" data-dfn-type="attribute" data-dfn-for="HTMLElement,Document,Window,GlobalEventHandlers"><code data-x="handler-onwaiting">onwaiting</code></dfn> <td> <code data-x="event-media-waiting">waiting</code>
+    <tr><td><dfn data-export="" data-dfn-type="attribute" data-dfn-for="HTMLElement,Document,Window,GlobalEventHandlers"><code data-x="handler-onwebkitanimationend">onwebkitanimationend</code></dfn> <td> <code data-x="">webkitAnimationEnd</code>
+    <tr><td><dfn data-export="" data-dfn-type="attribute" data-dfn-for="HTMLElement,Document,Window,GlobalEventHandlers"><code data-x="handler-onwebkitanimationiteration">onwebkitanimationiteration</code></dfn> <td> <code data-x="">webkitAnimationIteration</code>
+    <tr><td><dfn data-export="" data-dfn-type="attribute" data-dfn-for="HTMLElement,Document,Window,GlobalEventHandlers"><code data-x="handler-onwebkitanimationstart">onwebkitanimationstart</code></dfn> <td> <code data-x="">webkitAnimationStart</code>
+    <tr><td><dfn data-export="" data-dfn-type="attribute" data-dfn-for="HTMLElement,Document,Window,GlobalEventHandlers"><code data-x="handler-onwebkittransitionend">onwebkittransitionend</code></dfn> <td> <code data-x="">webkitTransitionEnd</code>
 
 <!-- not supported, use dnd: -->
 <!--<tr><td><dfn><code data-x="handler-onbeforecopy">onbeforecopy</code></dfn> <td> <code data-x="event-cp-beforecopy">beforecopy</code>--> <!-- widely used -->
@@ -94039,6 +94043,10 @@ typedef <span>OnBeforeUnloadEventHandlerNonNull</span>? <dfn>OnBeforeUnloadEvent
   attribute <span>EventHandler</span> <span data-x="handler-ontoggle">ontoggle</span>;
   attribute <span>EventHandler</span> <span data-x="handler-onvolumechange">onvolumechange</span>;
   attribute <span>EventHandler</span> <span data-x="handler-onwaiting">onwaiting</span>;
+  attribute <span>EventHandler</span> <span data-x="handler-onwebkitanimationend">onwebkitanimationend</span>;
+  attribute <span>EventHandler</span> <span data-x="handler-onwebkitanimationiteration">onwebkitanimationiteration</span>;
+  attribute <span>EventHandler</span> <span data-x="handler-onwebkitanimationstart">onwebkitanimationstart</span>;
+  attribute <span>EventHandler</span> <span data-x="handler-onwebkittransitionend">onwebkittransitionend</span>;
 };
 
 interface mixin <dfn>WindowEventHandlers</dfn> {