https://bugs.webkit.org/show_bug.cgi?id=21107
        <rdar://problem/6264219> New access key combination conflicts with VoiceOver

        * page/EventHandler.h:
        * page/gtk/EventHandlerGtk.cpp:
        (WebCore::EventHandler::accessKeyModifiers):
        * page/qt/EventHandlerQt.cpp:
        (WebCore::EventHandler::accessKeyModifiers):
        * page/win/EventHandlerWin.cpp:
        (WebCore::EventHandler::accessKeyModifiers):
        * page/wx/EventHandlerWx.cpp:
        (WebCore::EventHandler::accessKeyModifiers):
        Access access key modifiers via a function, not a static variable.

        * page/mac/EventHandlerMac.mm: (WebCore::EventHandler::accessKeyModifiers):
        Use Ctrl when VoiceOver is enabled, because a conflict with Emacs-style key bindings is
        less troublesome than one with VO keys.

        * page/EventHandler.cpp: (WebCore::EventHandler::handleAccessKey):
        Also fix an access key matching bug introduced in r32424 - Any superset of specified
        modifier set invoked access keys. We can use simple equality comparison instead because
        CapsLock is not part of modifiers(), so it doesn't need to be ignored explicitly.



git-svn-id: http://svn.webkit.org/repository/webkit/trunk@38211 268f45cc-cd09-0410-ab3c-d52691b4dbfc