/usr/lib/mozilla/plugins:
  => libgnome-shell-browser-plugin.so
        (size: 13832 bytes, mtime: Wed Apr 18 07:15:40 2012)
  => libtotem-mully-plugin.so
        (size: 71204 bytes, mtime: Thu Aug 23 19:51:13 2012)
  => libtotem-narrowspace-plugin.so
        (size: 79564 bytes, mtime: Thu Aug 23 19:51:13 2012)
  => libtotem-cone-plugin.so
        (size: 95760 bytes, mtime: Thu Aug 23 19:51:13 2012)
  => libtotem-gmp-plugin.so
        (size: 100232 bytes, mtime: Thu Aug 23 19:51:13 2012)
  => librhythmbox-itms-detection-plugin.so
        (size: 5412 bytes, mtime: Thu Jun 20 23:55:11 2013)
  => flashplugin-alternative.so
     - symlink to /etc/alternatives/mozilla-flashplugin
     - symlink to /usr/lib/flashplugin-installer/libflashplayer.so
        (size: 17422820 bytes, mtime: Tue Feb 25 13:09:13 2014)
  => skypebuttons.so
        (size: 67512 bytes, mtime: Mon Feb 10 00:01:57 2014)

/usr/lib/xulrunner-addons/plugins: