Include the 5 most recent update engine logs, up to 2000 lines in chrome:system.

scripts/get_log

 #!/bin/sh
 
 # 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 looks to see if a log file is zero length, or non
 # existent before writing something to stdout, so that we don't end up
 # with empty entries that just look broken.
 
 max_lines=${2:-1000}
+file=$1
 
-file=$1
+[ "$file" = "/dev/stdin" ] && tail --lines=$max_lines "$file" && exit
+
 if [ -h "$file" ]; then
   file="$(readlink -f $file)"
 fi
 
 if [ -r "$file" -a -f "$file" ]; then
   size=$(/bin/ls -s "$file")
   # Get the first field.
   size=${size%% *}
   if [ $size -gt 0 ]; then
     /usr/bin/tail --lines=$max_lines "$file"
   else
     echo "<empty>"
   fi
 else
   echo "<not available>"
 fi