Default to --nacl --arm in install-build-deps.sh

build/install-build-deps.sh

 #!/bin/bash -e
 
 # Copyright (c) 2012 The Chromium 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 install everything needed to build chromium (well, ideally, anyway)
 # See http://code.google.com/p/chromium/wiki/LinuxBuildInstructions
 # and http://code.google.com/p/chromium/wiki/LinuxBuild64Bit
 
@@ skipping 15 matching lines @@
   echo "Script will prompt interactively if options not given."
   exit 1
 }
 
 # Checks whether a particular package is available in the repos.
 # USAGE: $ package_exists <package name>
 package_exists() {
   apt-cache pkgnames | grep -x "$1" > /dev/null 2>&1
 }
 
+# These default to on because (some) bots need them and it keeps things
+# simple for the bot setup if all bots just run the script in its default
+# mode.  Developers who don't want stuff they don't need installed on their
+# own workstations can pass --no-arm --no-nacl when running the script.
+do_inst_arm=1
+do_inst_nacl=1
+
 while test "$1" != ""
 do
   case "$1" in
   --syms)                   do_inst_syms=1;;
   --no-syms)                do_inst_syms=0;;
   --lib32)                  do_inst_lib32=1;;
   --no-lib32)               do_inst_lib32=0;;
   --arm)                    do_inst_arm=1;;
   --no-arm)                 do_inst_arm=0;;
   --chromeos-fonts)         do_inst_chromeos_fonts=1;;
@@ skipping 530 matching lines @@
              sed -e 's/[.]so[.][0-9].*/.so/' |
              sort -u); do
     [ "x${i##*/}" = "xld-linux.so" ] && continue
     [ -r "$i" ] && continue
     j="$(ls "$i."* | sed -e 's/.*[.]so[.]\([^.]*\)$/\1/;t;d' |
          sort -n | tail -n 1)"
     [ -r "$i.$j" ] || continue
     sudo ln -s "${i##*/}.$j" "$i"
   done
 fi