autotest_run: kill the destructive stuff that's pwning the autotest installation

run_remote_tests.sh

 #!/bin/bash
 
 # Copyright (c) 2009 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.
 
 # Script to run client or server tests on a live remote image.
 
 # Load common constants.  This should be the first executable line.
 # The path to common.sh should be relative to your script's location.
@@ skipping 251 matching lines @@
     local args=()
     if [[ -n "${FLAGS_args}" ]]; then
       local with_spaces=""
       with_spaces=${FLAGS_args//,/ }
       args=("-a" "${with_spaces}")
     fi
 
     RAN_ANY_TESTS=${FLAGS_TRUE}
 
     # HACK: Temporary hack for cros-workon conversion
-    [[ -n "${WORKON_AUTOTEST}" ]] && WORKON_SUFFIX=_workon
+    [[ -n "${CROS_WORKON_SRCROOT}" ]] && WORKON_SUFFIX=_workon
 
     local enter_chroot=""
     local autotest="${GCLIENT_ROOT}/src/scripts/autotest${WORKON_SUFFIX}"
     if [[ ${INSIDE_CHROOT} -eq 0 ]]; then
       enter_chroot="./enter_chroot.sh --chroot ${FLAGS_chroot} --"
       autotest="./autotest${WORKON_SUFFIX}"
     fi
 
     ${enter_chroot} ${autotest} --board "${FLAGS_board}" -m "${FLAGS_remote}" \
       --ssh-port ${FLAGS_ssh_port} \
@@ skipping 13 matching lines @@
       fi
     else
       echo_color "red" ">>> FAILED: ${control_file}"
       cat "${test_status}"
     fi
     local end_time=$(date '+%s')
   done
 }
 
 main $@