/etc/apparmor.d/abstractions/fonts is in apparmor 2.7.102-0ubuntu3.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 | # vim:syntax=apparmor
# ------------------------------------------------------------------
#
#    Copyright (C) 2002-2009 Novell/SUSE
#    Copyright (C) 2009 Canonical Ltd.
#
#    This program is free software; you can redistribute it and/or
#    modify it under the terms of version 2 of the GNU General Public
#    License published by the Free Software Foundation.
#
# ------------------------------------------------------------------
  /usr/share/AbiSuite/fonts/**          r,
  /usr/lib/xorg/modules/fonts/**.so*    mr,
  /usr/share/fonts/                     r,
  /usr/share/fonts/**                   r,
  /etc/fonts/**                         r,
  /opt/kde3/share/fonts/**              r,
  /usr/lib{,32,64}/openoffice/share/fonts/**    r,
  /var/cache/fonts/**                   r,
  /var/cache/fontconfig/**              mr,
  /var/lib/defoma/**                    mr,
  /usr/share/a2ps/fonts/**              r,
  /usr/share/xfce/fonts/**              r,
  /usr/share/ghostscript/fonts/**       r,
  /usr/share/texmf/{,*/}fonts/**        r,
  /var/lib/ghostscript/**               r,
  @{HOME}/.fonts.conf                   r,
  @{HOME}/.fonts/                       r,
  @{HOME}/.fonts/**                     r,
  @{HOME}/.fonts.cache-2               mr,
  @{HOME}/.fontconfig/                  r,
  @{HOME}/.fontconfig/**              mrl,
  @{HOME}/.fonts.conf.d/                r,
  @{HOME}/.fonts.conf.d/**              r,
  /usr/local/share/fonts/               r,
  /usr/local/share/fonts/**             r,
 |