Reviewed by Dimitri Glazkov.

        [V8] Fixed bindings build after http://trac.webkit.org/changeset/48701
        https://bugs.webkit.org/show_bug.cgi?id=29713

        Got rid of isWindowEvent in function signatures:
        * bindings/v8/V8AbstractEventListener.cpp:
        (WebCore::V8AbstractEventListener::invokeEventHandler):
        (WebCore::V8AbstractEventListener::handleEvent):
        (WebCore::V8AbstractEventListener::getReceiverObject):
        * bindings/v8/V8AbstractEventListener.h:
        * bindings/v8/V8LazyEventListener.cpp:
        (WebCore::V8LazyEventListener::callListenerFunction):
        * bindings/v8/V8LazyEventListener.h:
        * bindings/v8/V8WorkerContextEventListener.cpp:
        (WebCore::V8WorkerContextEventListener::handleEvent):
        (WebCore::V8WorkerContextEventListener::callListenerFunction):
        (WebCore::V8WorkerContextEventListener::getReceiverObject):
        * bindings/v8/V8WorkerContextEventListener.h:
        * bindings/v8/custom/V8CustomEventListener.cpp:
        (WebCore::V8EventListener::callListenerFunction):
        * bindings/v8/custom/V8CustomEventListener.h:

        Switched to EventTarget methods of adding/removing listeners:
        * bindings/v8/custom/V8DOMApplicationCacheCustom.cpp:
        (WebCore::toEventID):
        (WebCore::ACCESSOR_SETTER):

        * dom/EventTarget.h: Some functions were incorrectly marked
        as JSC-specific.


git-svn-id: http://svn.webkit.org/repository/webkit/trunk@48720 268f45cc-cd09-0410-ab3c-d52691b4dbfc