Introduce XMLHttpRequestEventTarget IDL interface

Source/core/xml/XMLHttpRequestEventTarget.h

Index: Source/core/xml/XMLHttpRequestEventTarget.h
diff --git a/Source/core/page/DOMWindowBase64.h b/Source/core/xml/XMLHttpRequestEventTarget.h
similarity index 67%
copy from Source/core/page/DOMWindowBase64.h
copy to Source/core/xml/XMLHttpRequestEventTarget.h
index 21001e0bf625345cded68564b9c97ad3be189722..be91c5dcf8f97d6300f79ea5777bff275aedf792 100644
--- a/Source/core/page/DOMWindowBase64.h
+++ b/Source/core/xml/XMLHttpRequestEventTarget.h
@@ -1,6 +1,4 @@
 /*
- * Copyright (C) 2006, 2007, 2008, 2010 Apple Inc. All rights reserved.
- * Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies)
  * Copyright (C) 2013 Samsung Electronics. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -30,20 +28,31 @@
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
-#ifndef DOMWindowBase64_h
-#define DOMWindowBase64_h
+#ifndef XMLHttpRequestEventTarget_h
+#define XMLHttpRequestEventTarget_h
 
-#include "wtf/text/WTFString.h"
+#include "core/dom/EventTarget.h"
 
 namespace WebCore {
 
-class ExceptionState;
+class XMLHttpRequestEventTarget : public EventTarget {
+public:
+    DEFINE_ATTRIBUTE_EVENT_LISTENER(abort);
+    DEFINE_ATTRIBUTE_EVENT_LISTENER(error);
+    DEFINE_ATTRIBUTE_EVENT_LISTENER(load);
+    DEFINE_ATTRIBUTE_EVENT_LISTENER(loadend);
+    DEFINE_ATTRIBUTE_EVENT_LISTENER(loadstart);
+    DEFINE_ATTRIBUTE_EVENT_LISTENER(progress);
+    DEFINE_ATTRIBUTE_EVENT_LISTENER(timeout);
 
-namespace DOMWindowBase64 {
-String btoa(void*, const String& stringToEncode, ExceptionState&);
-String atob(void*, const String& encodedString, ExceptionState&);
-}
+protected:
+    virtual EventTargetData* eventTargetData() OVERRIDE { return &m_eventTargetData; }
+    virtual EventTargetData* ensureEventTargetData() OVERRIDE { return &m_eventTargetData; }
+
+private:
+    EventTargetData m_eventTargetData;
+};
 
 } // namespace WebCore
 
-#endif // DOMWindowBase64_h
+#endif // XMLHttpRequestEventTarget_h