fix up function style

The "function" keyword is superfluous, not in POSIX, is inconsistent
between bash files, and generally makes me angry.  So convert every
instance to the form:
	foo() {

BUG=None
TEST=`cbuildbot x86-generic-paladin` works

Change-Id: I97f5ca30a3edfef7222b1e08ac23917dc613b556
Reviewed-on: https://gerrit.chromium.org/gerrit/22467
Reviewed-by: David James <davidjames@chromium.org>
Commit-Ready: Mike Frysinger <vapier@chromium.org>
Tested-by: Mike Frysinger <vapier@chromium.org>
diff --git a/sdk_lib/make_chroot.sh b/sdk_lib/make_chroot.sh
index 6d5014e..d99eca9 100755
--- a/sdk_lib/make_chroot.sh
+++ b/sdk_lib/make_chroot.sh
@@ -87,14 +87,14 @@
 )
 
 # Invoke enter_chroot.  This can only be used after sudo has been installed.
-function enter_chroot {
+enter_chroot() {
   "$ENTER_CHROOT" --chroot "$FLAGS_chroot" -- "${ENTER_CHROOT_ARGS[@]}" "$@"
 }
 
 # Invoke enter_chroot running the command as root, and w/out sudo.
 # This should be used prior to sudo being merged.
 early_env=()
-function early_enter_chroot() {
+early_enter_chroot() {
   "$ENTER_CHROOT" --chroot "$FLAGS_chroot" --early_make_chroot \
     -- "${ENTER_CHROOT_ARGS[@]}" "${early_env[@]}" "$@"
 }
@@ -106,12 +106,12 @@
   sudo chroot "${FLAGS_chroot}" "$@"
 }
 
-function cleanup {
+cleanup() {
   # Clean up mounts
   safe_umount_tree "${FLAGS_chroot}"
 }
 
-function delete_existing {
+delete_existing() {
   # Delete old chroot dir.
   if [[ ! -e "$FLAGS_chroot" ]]; then
     return
@@ -123,7 +123,7 @@
   info "Done."
 }
 
-function init_users () {
+init_users () {
    info "Set timezone..."
    # date +%Z has trouble with daylight time, so use host's info.
    sudo rm -f "${FLAGS_chroot}/etc/localtime"
@@ -147,7 +147,7 @@
    sudo sed -e '1{h;d};$!{H;d};$G' -i "${FLAGS_chroot}/etc/passwd"
 }
 
-function init_setup () {
+init_setup () {
    info "Running init_setup()..."
    sudo mkdir -p -m 755 "${FLAGS_chroot}/usr" \
      "${FLAGS_chroot}/usr/local/portage" \