Reduce the size of factory install shim.

src/scripts/common.sh

 # Copyright (c) 2010 The Chromium OS Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 # Common constants for build scripts
 # This must evaluate properly for both /bin/bash and /bin/sh
 
 # All scripts should die on error unless commands are specifically excepted
 # by prefixing with '!' or surrounded by 'set +e' / 'set -e'.
 # TODO: Re-enable this once shflags is less prone to dying.
@@ skipping 105 matching lines @@
 # Directory locations inside the dev chroot
 CHROOT_TRUNK_DIR="/home/$USER/trunk"
 
 # Install make for portage ebuilds.  Used by build_image and gmergefs.
 DEFAULT_INSTALL_MASK="/usr/include /usr/man /usr/share/man /usr/share/doc \
   /usr/share/gtk-doc /usr/share/gtk-2.0 /usr/lib/gtk-2.0/include \
   /usr/share/info /usr/share/aclocal /usr/lib/gcc /usr/lib/pkgconfig \
   /usr/share/pkgconfig /usr/share/gettext /usr/share/readline /etc/runlevels \
   /usr/share/openrc /lib/rc *.a *.la /etc/init.d"
 
+FACTORY_INSTALL_MASK="/opt/google/chrome /opt/google/o3d /opt/netscape \
+  /usr/lib/dri /usr/lib/python2.6/test /usr/share/chewing /usr/share/fonts \
+  /usr/share/ibus-pinyin /usr/share/libhangul /usr/share/locale \
+  /usr/share/m17n /usr/share/mime /usr/share/sounds /usr/share/tts \
+  /usr/share/X11 /usr/share/zoneinfo"
+
 # Check to ensure not running old scripts
 V_REVERSE=''
 V_VIDOFF=''
 case "$(basename $0)" in
   build_image.sh|build_platform_packages.sh|customize_rootfs.sh|make_chroot.sh)
   echo
   echo "$V_REVERSE============================================================"
   echo "===========================  WARNING  ======================"
   echo "============================================================$V_VIDOFF"
   echo
@@ skipping 260 matching lines @@
 
   # Setup var symlink.
   if [ -h "${dev_image_root}/var" ]; then
     sudo unlink "${dev_image_root}/var"
   elif [ -e "${dev_image_root}/var" ]; then
     die "${dev_image_root}/var should be a symlink if it exists"
   fi
 
   sudo ln -s "${var_target}" "${dev_image_root}/var"
 }