Remove obsolete CHROMEOS_REVISION setting in enter_chroot.

enter_chroot.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 enter the chroot environment
 
 # --- BEGIN COMMON.SH BOILERPLATE ---
 # Load common CrOS utilities.  Inside the chroot this file is installed in
@@ skipping 333 matching lines @@
 
 # Apply any hacks needed to update the chroot.
 chroot_hacks_from_outside "${FLAGS_chroot}"
 chroot_hacks_too
 
 
 # Make sure we unmount before exiting
 trap teardown_env EXIT
 setup_env
 
-# Get the git revision to pass into the chroot.
-#
-# This must be determined outside the chroot because (1) there is no
-# git inside the chroot, and (2) if there were it would likely be
-# the wrong version, which would mess up the .git directories.
-#
-# Note that this fixes $CHROMEOS_REVISION at the time the chroot is
-# entered.  That's ok for the main use case of automated builds,
-# which pass each command line into a separate call to enter_chroot
-# so always have up-to-date info.  For developer builds, there may not
-# be a single revision, since the developer may have
-# hand-sync'd some subdirs and edited files in others.
-# In that case, check against origin/HEAD and mark** revision.
-# Use git:8 chars of sha1
-REVISION=$(cd ${FLAGS_trunk}/src/scripts ; git rev-parse --short=8 HEAD)
-CHROOT_PASSTHRU="CHROMEOS_REVISION=$REVISION BUILDBOT_BUILD=$FLAGS_build_number CHROMEOS_OFFICIAL=$CHROMEOS_OFFICIAL"
+CHROOT_PASSTHRU="BUILDBOT_BUILD=$FLAGS_build_number CHROMEOS_OFFICIAL=$CHROMEOS_OFFICIAL"
 CHROOT_PASSTHRU="${CHROOT_PASSTHRU} \
 CHROMEOS_RELEASE_APPID=${CHROMEOS_RELEASE_APPID:-"{DEV-BUILD}"}"
 CHROOT_PASSTHRU="${CHROOT_PASSTHRU} \
 CHROMEOS_VERSION_TRACK=$CHROMEOS_VERSION_TRACK CHROMEOS_VERSION_AUSERVER=$CHROMEOS_VERSION_AUSERVER CHROMEOS_VERSION_DEVSERVER=$CHROMEOS_VERSION_DEVSERVER"
 
 if [ -d "$HOME/.subversion" ]; then
   TARGET="/home/${USER}/.subversion"
   mkdir -p "${FLAGS_chroot}${TARGET}"
   ensure_mounted "${HOME}/.subversion" "--bind" "${TARGET}"
 fi
@@ skipping 10 matching lines @@
 # Run command or interactive shell.  Also include the non-chrooted path to
 # the source trunk for scripts that may need to print it (e.g.
 # build_image.sh).
 sudo -- chroot "$FLAGS_chroot" sudo -i -u $USER $CHROOT_PASSTHRU \
   EXTERNAL_TRUNK_PATH="${FLAGS_trunk}" LANG=C SSH_AGENT_PID="${SSH_AGENT_PID}" \
   SSH_AUTH_SOCK="${SSH_AUTH_SOCK}" "$@"
 
 # Remove trap and explicitly unmount
 trap - EXIT
 teardown_env