Roll 50: Copied IDLs, PYTHON scripts from WebKit removed deleted files in WebCore

core/events/EventTarget.idl

Index: core/events/EventTarget.idl
diff --git a/core/events/EventTarget.idl b/core/events/EventTarget.idl
index 3a37d1936b3dc974e47dc8b287eeb4d89fd56235..b17db3f6d626bb48f82fe7683f81c66501e536ea 100644
--- a/core/events/EventTarget.idl
+++ b/core/events/EventTarget.idl
@@ -21,14 +21,11 @@
 // https://dom.spec.whatwg.org/#interface-eventtarget
 
 [
-    CheckSecurity=Window,
+    CheckSecurity=Receiver,
     WillBeGarbageCollected,
     Exposed=(Window,Worker)
 ] interface EventTarget {
-    // FIXME: first 2 args should be required, but throwing TypeError breaks
-    // legacy content.  http://crbug.com/353484
-    // FIXME: type should not be nullable.
-    [Custom=(CallPrologue,CallEpilogue)] void addEventListener(optional DOMString? type = null, optional EventListener? listener = null, optional boolean capture = false);
-    [Custom=(CallPrologue,CallEpilogue)] void removeEventListener(optional DOMString? type = null, optional EventListener? listener = null, optional boolean capture = false);
-    [RaisesException] boolean dispatchEvent(Event event);
+    [Custom] void addEventListener(DOMString type, EventListener? listener, optional (EventListenerOptions or boolean) options);
+    [Custom] void removeEventListener(DOMString type, EventListener? listener, optional (EventListenerOptions or boolean) options);
+    [ImplementedAs=dispatchEventForBindings, RaisesException] boolean dispatchEvent(Event event);
 };