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

autotest_run.sh

 #!/bin/bash
 
 # 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.
 
 # This script is intended as a wrapper to execute autotest tests for a given
 # board.
 
 # Load common constants.  This should be the first executable line.
@@ skipping 13 matching lines @@
 
 # Define a directory which will not be cleaned by portage automatically. So we
 # could achieve incremental build between two autoserv runs.
 BUILD_RUNTIME="/build/${FLAGS_board}/usr/local/autotest/"
 
 # Hack: set the CHROMEOS_ROOT variable by hand here
 CHROMEOS_ROOT=/home/${USER}/trunk/
 
 # Ensure the configures run by autotest pick up the right config.site
 CONFIG_SITE=/usr/share/config.site
-AUTOTEST_SRC="${CHROMEOS_ROOT}/src/third_party/autotest/files"
 
 [ -z "${FLAGS_board}" ] && \
   die "You must specify --board="
 
 function setup_ssh() {
   eval $(ssh-agent) > /dev/null
   ssh-add \
     ${CHROMEOS_ROOT}/src/scripts/mod_for_test_scripts/ssh_keys/testing_rsa
 }
 
 function teardown_ssh() {
   ssh-agent -k > /dev/null
 }
 
-function copy_src() {
-  local dst=$1
-  mkdir -p "${dst}"
-  cp -fpru "${AUTOTEST_SRC}"/{client,conmux,server,tko,utils} "${dst}" || die
-  cp -fpru "${AUTOTEST_SRC}/shadow_config.ini" "${dst}" || die
-}
-
 src_test() {
-  # claim ownership of the staging area
-  sudo chown -R ${USER} "${BUILD_RUNTIME}"
-  sudo chmod -R 755 "${BUILD_RUNTIME}"
-
-  local third_party="${CHROMEOS_ROOT}/src/third_party"
-  copy_src "${BUILD_RUNTIME}"
-  cp -fpru "${AUTOTEST_SRC}/global_config.ini" "${BUILD_RUNTIME}"
-
-  # ensure that no tests are ever built
-  sed -e 's/enable_server_prebuild: .*/enable_server_prebuild: False/' -i \
-    "${BUILD_RUNTIME}"/global_config.ini
+  # TODO: These places currently need to be writeable but shouldn't be
+  sudo chmod a+w ${BUILD_RUNTIME}/server/{tests,site_tests}
 
   setup_ssh
   cd "${BUILD_RUNTIME}"
 
   local args=()
   if [[ -n ${AUTOSERV_TEST_ARGS} ]]; then
     args=("-a" "${AUTOSERV_TEST_ARGS}")
   fi
 
   local timestamp=$(date +%Y-%m-%d-%H.%M.%S)
 
   # Do not use sudo, it'll unset all your environment
   LOGNAME=${USER} ./server/autoserv -r /tmp/results.${timestamp} \
     ${AUTOSERV_ARGS} "${args[@]}"
 
   teardown_ssh
 }
 
 src_test