Remove old logic ... and don't needlessly modifiy dev image.

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 139 matching lines @@
 #DEFAULT_BOARD=x86-generic # or...
 DEFAULT_BOARD=$(echo $ALL_BOARDS | awk '{print $NF}')
 
 # Enable --fast by default.
 DEFAULT_FAST=${FLAGS_TRUE}
 
 
 # Standard filenames
 CHROMEOS_IMAGE_NAME="chromiumos_image.bin"
 CHROMEOS_TEST_IMAGE_NAME="chromiumos_test_image.bin"
-
+CHROMEOS_FACTORY_TEST_IMAGE_NAME="chromiumos_factory_image.bin"
 
 # Directory locations inside the dev chroot
 CHROOT_TRUNK_DIR="/home/$USER/trunk"
 
 # Install make for portage ebuilds.  Used by build_image and gmergefs.
 # TODO: Is /usr/local/autotest-chrome still used by anyone?
 DEFAULT_INSTALL_MASK="
   *.a
   *.la
   /etc/init.d
@@ skipping 469 matching lines @@
     args="${args} --force_copy"
   fi
 
   # Modify the image for test, creating a new test image
   "${SCRIPTS_DIR}/mod_image_for_test.sh" --board=${FLAGS_board} \
     --image="$1/$2" --noinplace ${args}
 
   # From now on we use the just-created test image
   CHROMEOS_RETURN_VAL="$1/${CHROMEOS_TEST_IMAGE_NAME}"
 }