Reland "stateful_update: Deprecate/Delete"

This reverts commit d13a1beb844955af939956534c20e52ccbd19d5d.

Reason for revert: <Don't use this anymore in provisioning>

Original change's description:
> Revert "stateful_update: Deprecate/Delete"
>
> This reverts commit 48c2e8a369c07d0b4ee1eaa2eba1e4ae13ee0123.
>
> Reason for revert: autoupdater in Autotest is suspected to still need this, and this may be causing increased provision failures.  Revert since it's just removing an otherwise presumed unused file.
>
> Original change's description:
> > stateful_update: Deprecate/Delete
> >
> > stateful_update has been chromitized. We don't need this script anymore.
> >
> > BUG=chromium:1026933
> > TEST=CQ passes
> >
> > Cq-Depend: chromium:2054077
> > Change-Id: Ibb707672a3d421bbc779c042afa9ddb143ef2efc
> > Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/dev-util/+/2054755
> > Tested-by: Amin Hassani <ahassani@chromium.org>
> > Commit-Queue: Amin Hassani <ahassani@chromium.org>
> > Reviewed-by: Mike Frysinger <vapier@chromium.org>
>
> Bug: chromium:1026933
> Change-Id: If45b6812d35b4cd8f67ee9451013269cbc260d62
> Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/dev-util/+/2133291
> Reviewed-by: Allen Li <ayatane@chromium.org>
> Reviewed-by: Amin Hassani <ahassani@chromium.org>
> Commit-Queue: Allen Li <ayatane@chromium.org>
> Tested-by: Allen Li <ayatane@chromium.org>

BUG=chromium:1067434
TEST=None

Change-Id: Ifdf5f960f8f6a8ae790fc81ce95552a44cba03f7
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/dev-util/+/2399744
Tested-by: Amin Hassani <ahassani@chromium.org>
Commit-Queue: Mike Frysinger <vapier@chromium.org>
Reviewed-by: Mike Frysinger <vapier@chromium.org>
Reviewed-by: Amin Hassani <ahassani@chromium.org>
diff --git a/Makefile b/Makefile
index dbc9d34..e584dcc 100644
--- a/Makefile
+++ b/Makefile
@@ -22,13 +22,9 @@
 		setup_chromite.py \
 		"${DESTDIR}/usr/lib/devserver"
 
-	install -m 0755 stateful_update "${DESTDIR}/usr/bin"
-
   # The dut-scripts content is only used when installed on Moblab.
   # Mode 0644 for these files because they're for serving to DUTs
   # over HTTP, not for local execution.
-	install -m 0644 stateful_update \
-		"${DESTDIR}/usr/lib/devserver/dut-scripts"
 	install -m 0644 quick-provision/quick-provision \
 		"${DESTDIR}/usr/lib/devserver/dut-scripts"
 
diff --git a/stateful_update b/stateful_update
deleted file mode 100755
index a705402..0000000
--- a/stateful_update
+++ /dev/null
@@ -1,152 +0,0 @@
-#!/bin/sh
-
-# Copyright (c) 2012 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 scripts performs update of stateful partition directories useful for
-# dev_mode.
-
-# in order to support developers going from older images with the old shflags
-# we'll check for both new shflags and old shflags
-if [ -f /usr/share/misc/shflags ] ; then
-  . /usr/share/misc/shflags
-elif [ -f /usr/lib/shflags ] ; then
-  . /usr/lib/shflags
-else
-  echo >&2 "$0 Unable to source shflags"
-  exit 1
-fi
-
-# Constants for states.
-CLEAN_STATE="clean"
-OLD_STATE="old"
-RESET_STATE="reset"
-
-LSB_RELEASE="/etc/lsb-release"
-STATEFUL_DIR="/mnt/stateful_partition"
-UPDATE_STATE_FILE=".update_available"
-
-DEFINE_string stateful_change "${OLD_STATE}" \
-  "The state of the new stateful partition - used in update testing."
-
-FLAGS "$@" || exit 1
-
-# Die on error.
-set -e
-
-remove_quotes() {
-  echo "$1" | sed -e "s/^'//; s/'$//"
-}
-
-download_stateful_payload(){
-  # Download and unzip directories onto the stateful partition.
-  eval "curl --silent --max-time 300 \"${stateful_update_url}\"" |
-      tar --ignore-command-error --overwrite --directory=${STATEFUL_DIR} -xz
-}
-
-update_dev_image () {
-  local base_update_url devserver_url
-  local local_payload_path
-  local path=$(remove_quotes "${FLAGS_ARGV}")
-
-  if [ -z "${path}" ]; then
-    if [ -f "${STATEFUL_DIR}${LSB_RELEASE}" ]; then
-      devserver_url=$(grep CHROMEOS_DEVSERVER ${STATEFUL_DIR}${LSB_RELEASE} |
-          cut -f 2 -d '=')
-    fi
-    if [ -z "${devserver_url}" ]; then
-      devserver_url=$(grep CHROMEOS_DEVSERVER ${LSB_RELEASE} | cut -f 2 -d '=')
-    fi
-    # Sanity check.
-    if [ -z "${devserver_url}" ]; then
-      echo >&2 "No CHROMEOS_DEVSERVER URL found in lsb-release file."
-      exit 1
-    fi
-    # Devserver URL should never contain "/update"
-    devserver_url=$(echo ${devserver_url} | sed -e 's#/update##')
-    base_update_url="${devserver_url}/static"
-  # Determine whether the path is local.
-  elif [ -f "${path}" ] || [ "${path}" = "-" ]; then
-    local_payload_path=${path}
-  else
-    base_update_url=${path}
-  fi
-
-  if [ -n "${base_update_url}" ]; then
-    local stateful_update_url="${base_update_url}/stateful.tgz"
-    local download_exit_code=0
-    for i in `seq 1 2`; do
-      if [ $i -eq 1 ]; then
-        echo >&2 "Downloading stateful payload from ${stateful_update_url}"
-      else
-        echo >&2 "Downloading failed, retrying."
-      fi
-      if download_stateful_payload; then
-        download_exit_code=$?
-        echo >&2 "Downloading command returns code ${download_exit_code}."
-        break
-      else
-        download_exit_code=$?
-        echo >&2 "Downloading command returns code ${download_exit_code}."
-      fi
-    done
-    if [ ${download_exit_code} -ne 0 ]; then
-      return ${download_exit_code}
-    fi
-    echo >&2 "Successfully downloaded update."
-  else
-    echo >&2 "Reading local payload ${local_payload_path}"
-    # Set timeout to four minutes to avoid waiting on stdin indefinitely.
-    timeout 240s tar --ignore-command-error --overwrite \
-        --directory=${STATEFUL_DIR} -xzf ${local_payload_path}
-    exit_code=$?
-    if [ "${exit_code}" -ne 0 ]; then
-      echo >&2 "Failed to unzip and write the stateful update."
-      return "${exit_code}"
-    fi
-    echo >&2 "Successfully retrieved update."
-  fi
-
-  if [ ! -d "${STATEFUL_DIR}/var_new" ] ||
-      [ ! -d "${STATEFUL_DIR}/dev_image_new" ]; then
-    echo >&2 "Missing var or dev_image in stateful payload."
-    return 1
-  fi
-}
-
-reset_state () {
-  echo >&2 "Resetting stateful update state."
-  rm -f "${STATEFUL_DIR}/${UPDATE_STATE_FILE}"
-  rm -rf "${STATEFUL_DIR}/var_new"
-  rm -rf "${STATEFUL_DIR}/dev_image_new"
-}
-
-update_old_state () {
-  echo >&2 "Performing standard stateful update."
-  echo -n "" > "${STATEFUL_DIR}/${UPDATE_STATE_FILE}"
-}
-
-update_clean_state () {
-  echo >&2 "Restoring state to factory_install with dev_image."
-  echo -n "clobber" > "${STATEFUL_DIR}/${UPDATE_STATE_FILE}"
-}
-
-main () {
-  if [ "${FLAGS_stateful_change}" = "${RESET_STATE}" ]; then
-    reset_state
-  elif update_dev_image; then
-    if [ "${FLAGS_stateful_change}" = "${OLD_STATE}" ]; then
-      update_old_state
-    elif [ "${FLAGS_stateful_change}" = "${CLEAN_STATE}" ]; then
-      update_clean_state
-    else
-      echo >&2 "Invalid state given to stateful update.  Aborting..."
-      return 1
-    fi
-  else
-    return 1
-  fi
-}
-
-main $@