Reviewed by Sam.

        Add DOMApplicationCache implementation.
        
        * dom/EventNames.h:
        Add new event names.
        
        * dom/EventTarget.cpp:
        (WebCore::EventTarget::toDOMApplicationCache):
        * dom/EventTarget.h:
        Add EventTarget conversion method.
        
        * loader/appcache/ApplicationCacheGroup.h:
        (WebCore::ApplicationCacheGroup::):
        (WebCore::ApplicationCacheGroup::status):
        (WebCore::ApplicationCacheGroup::update):
        (WebCore::ApplicationCacheGroup::newestCache):
        Add more stubs.
        
        * loader/appcache/DOMApplicationCache.cpp:
        * loader/appcache/DOMApplicationCache.h:

        * page/DOMWindow.cpp:
        (WebCore::DOMWindow::clear):
        (WebCore::DOMWindow::applicationCache):
        * page/DOMWindow.h:
        (WebCore::DOMWindow::optionalApplicationCache):
        Add ApplicationCache member.



git-svn-id: http://svn.webkit.org/repository/webkit/trunk@32006 268f45cc-cd09-0410-ab3c-d52691b4dbfc