Pass chroot flag into enter_chroot.

src/scripts/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 230 matching lines @@
     local verbose=""
     if [[ ${FLAGS_verbose} -eq $FLAGS_TRUE ]]; then
       verbose="--verbose"
     fi
 
     RAN_ANY_TESTS=${FLAGS_TRUE}
 
     local enter_chroot=""
     local autotest="${GCLIENT_ROOT}/src/scripts/autotest"
     if [[ ${INSIDE_CHROOT} -eq 0 ]]; then
-      enter_chroot="./enter_chroot.sh --"
+      enter_chroot="./enter_chroot.sh --chroot ${FLAGS_chroot} --"
       autotest="./autotest"
     fi
 
     ${enter_chroot} ${autotest} --board "${FLAGS_board}" -m "${FLAGS_remote}" \
       "${option}" "${control_file}" -r "${results_dir}" ${verbose}
 
     results_dir="${TMP}/${results_dir_name}"
     local test_status="${results_dir}/status.log"
     local test_result_dir="${results_dir}/${short_name}"
     local keyval_file="${test_result_dir}/results/keyval"
     echo ""
     if is_successful_test "${test_status}"; then
       echo_color "green" ">>> SUCCESS: ${control_file}"
       if [[ -f "${keyval_file}" ]]; then
         echo ">>> Keyval was:"
         cat "${keyval_file}"
       fi
     else
       echo_color "red" ">>> FAILED: ${control_file}"
       cat "${test_status}"
     fi
     local end_time=$(date '+%s')
   done
 }
 
 main $@