Add ontoggle to GlobalEventHandlers and HTML attributes

Source/core/html/HTMLElement.cpp

Index: Source/core/html/HTMLElement.cpp
diff --git a/Source/core/html/HTMLElement.cpp b/Source/core/html/HTMLElement.cpp
index 7fae6b26659288df365a9880d03686660af221b9..4298135d334e5acb24501637d36695347e4a0811 100644
--- a/Source/core/html/HTMLElement.cpp
+++ b/Source/core/html/HTMLElement.cpp
@@ -281,6 +281,7 @@ const AtomicString& HTMLElement::eventNameForAttributeName(const QualifiedName&
         attributeNameToEventNameMap.set(onsubmitAttr.localName(), EventTypeNames::submit);
         attributeNameToEventNameMap.set(onsuspendAttr.localName(), EventTypeNames::suspend);
         attributeNameToEventNameMap.set(ontimeupdateAttr.localName(), EventTypeNames::timeupdate);
+        attributeNameToEventNameMap.set(ontoggleAttr.localName(), EventTypeNames::toggle);
         attributeNameToEventNameMap.set(ontouchcancelAttr.localName(), EventTypeNames::touchcancel);
         attributeNameToEventNameMap.set(ontouchendAttr.localName(), EventTypeNames::touchend);
         attributeNameToEventNameMap.set(ontouchmoveAttr.localName(), EventTypeNames::touchmove);