mozilla: activex: add cache filling level to event MediaPlayerBuffering
mozilla: activex: add cache filling level to event MediaPlayerBuffering

Add cache filling level to the MediaPlayerBuffering event.

rdp/npapi-vlc,chengsun/gtk-npapi-vlc,rdp/npapi-vlc,rdp/npapi-vlc,modulexcite/npapi-vlc,jamesbates/npapi-vlc,modulexcite/npapi-vlc,jamesbates/npapi-vlc,rdp/npapi-vlc,modulexcite/npapi-vlc,jamesbates/npapi-vlc,modulexcite/npapi-vlc,chengsun/gtk-npapi-vlc,chengsun/gtk-npapi-vlc