Reviewed by Darin Adler.

        Remove copy/paste addEventListener "custom" bindings via code generation
        https://bugs.webkit.org/show_bug.cgi?id=38210

        It's somewhat lame to special case addEventListener and
        removeEventListener in the code generator, but it saves a large amount
        of boilerplate "custom" bindings code.

        Idea shamelessly stolen from the V8 code generator.

        This patch points to some good refactoring opportunities in
        CodeGeneratorJS.pm, but I'm going to hold off on those for a future
        patch.  By generating test coverage for the code generator, we make
        these future refactorings easier.

        * bindings/js/JSAbstractWorkerCustom.cpp:
        * bindings/js/JSDOMApplicationCacheCustom.cpp:
        * bindings/js/JSDesktopNotificationsCustom.cpp:
        * bindings/js/JSEventSourceCustom.cpp:
        * bindings/js/JSMessagePortCustom.cpp:
        * bindings/js/JSNodeCustom.cpp:
        * bindings/js/JSSVGElementInstanceCustom.cpp:
        * bindings/js/JSWebSocketCustom.cpp:
        * bindings/js/JSWorkerContextCustom.cpp:
        * bindings/js/JSXMLHttpRequestCustom.cpp:
        * bindings/js/JSXMLHttpRequestUploadCustom.cpp:
        * bindings/scripts/CodeGeneratorJS.pm:
        * bindings/scripts/test/GObject/WebKitDOMTestObj.cpp:
        * bindings/scripts/test/GObject/WebKitDOMTestObj.h:
        * bindings/scripts/test/JS/JSTestObj.cpp:
        (WebCore::):
        (WebCore::jsTestObjPrototypeFunctionAddEventListener):
        (WebCore::jsTestObjPrototypeFunctionRemoveEventListener):
        * bindings/scripts/test/JS/JSTestObj.h:
        * bindings/scripts/test/ObjC/DOMTestObj.h:
        * bindings/scripts/test/ObjC/DOMTestObj.mm:
        (-[DOMTestObj addEventListener:listener:useCapture:]):
        (-[DOMTestObj removeEventListener:listener:useCapture:]):
        * bindings/scripts/test/TestObj.idl:
        * bindings/scripts/test/V8/V8TestObj.cpp:
        (WebCore::TestObjInternal::addEventListenerCallback):
        (WebCore::TestObjInternal::removeEventListenerCallback):
        (WebCore::):
        * dom/MessagePort.idl:
        * dom/Node.idl:
        * loader/appcache/DOMApplicationCache.idl:
        * notifications/Notification.idl:
        * page/EventSource.idl:
        * svg/SVGElementInstance.idl:
        * websockets/WebSocket.idl:
        * workers/AbstractWorker.idl:
        * workers/WorkerContext.idl:
        * xml/XMLHttpRequest.idl:
        * xml/XMLHttpRequestUpload.idl:

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@58330 268f45cc-cd09-0410-ab3c-d52691b4dbfc