Introduce XMLHttpRequestEventTarget IDL interface

LayoutTests/webexposed/event-target-in-prototype-expected.txt

Index: LayoutTests/webexposed/event-target-in-prototype-expected.txt
diff --git a/LayoutTests/webexposed/event-target-in-prototype-expected.txt b/LayoutTests/webexposed/event-target-in-prototype-expected.txt
index 903b0fd8c2d833793bfe1d332c206ec0762e83bd..50093947facf471d182a96780b8784bf50bdcd63 100644
--- a/LayoutTests/webexposed/event-target-in-prototype-expected.txt
+++ b/LayoutTests/webexposed/event-target-in-prototype-expected.txt
@@ -4,12 +4,17 @@ On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE
 
 
 PASS EventSource.prototype.__proto__ is EventTarget.prototype
+PASS FileReader.prototype.__proto__ is EventTarget.prototype
+PASS MediaController.prototype.__proto__ is EventTarget.prototype
+PASS MediaSource.prototype.__proto__ is EventTarget.prototype
 PASS MessagePort.prototype.__proto__ is EventTarget.prototype
 PASS Node.prototype.__proto__ is EventTarget.prototype
+PASS Performance.prototype.__proto__ is EventTarget.prototype
+PASS SVGElementInstance.prototype.__proto__ is EventTarget.prototype
+PASS SharedWorker.prototype.__proto__ is EventTarget.prototype
 PASS WebSocket.prototype.__proto__ is EventTarget.prototype
 PASS Window.prototype.__proto__ is EventTarget.prototype
-PASS XMLHttpRequest.prototype.__proto__ is EventTarget.prototype
-PASS XMLHttpRequestUpload.prototype.__proto__ is EventTarget.prototype
+PASS Worker.prototype.__proto__ is EventTarget.prototype
 PASS webkitAudioContext.prototype.__proto__ is EventTarget.prototype
 PASS successfullyParsed is true