Restart Mac pref-pane if version mismatch detected

remoting/host/installer/mac/PrivilegedHelperTools/org.chromium.chromoting.me2me.sh

Index: remoting/host/installer/mac/PrivilegedHelperTools/org.chromium.chromoting.me2me.sh
diff --git a/remoting/host/installer/mac/PrivilegedHelperTools/org.chromium.chromoting.me2me.sh b/remoting/host/installer/mac/PrivilegedHelperTools/org.chromium.chromoting.me2me.sh
index 664087bcb5297c32b9d24fb5bf65736b743d4de4..7b5e3b16080ff21284185c07d9cdb25d58cfc508 100755
--- a/remoting/host/installer/mac/PrivilegedHelperTools/org.chromium.chromoting.me2me.sh
+++ b/remoting/host/installer/mac/PrivilegedHelperTools/org.chromium.chromoting.me2me.sh
@@ -10,6 +10,7 @@ HOST_EXE=$CONFIG_DIR/$NAME.me2me_host.app/Contents/MacOS/remoting_me2me_host
 PLIST_FILE=$CONFIG_DIR/$NAME.me2me_host.app/Contents/Info.plist
 ENABLED_FILE=$CONFIG_DIR/$NAME.me2me_enabled
 CONFIG_FILE=$CONFIG_DIR/$NAME.json
+PREF_PANE_BUNDLE=/Library/PreferencePanes/$NAME.prefPane
 
 # The exit code returned by 'wait' when a process is terminated by SIGTERM.
 SIGTERM_EXIT_CODE=143
@@ -85,6 +86,11 @@ elif [[ "$1" = "--save-config" ]]; then
   cat > "$CONFIG_FILE"
 elif [[ "$1" = "--host-version" ]]; then
   PlistBuddy -c "Print CFBundleVersion" "$PLIST_FILE"
+elif [[ "$1" = "--launch-prefpane" ]]; then

[Jamie, 2012/05/23 01:17:17]

Nit: relaunch-prefpane?

[Lambros, 2012/05/24 00:54:50]

Done.

+  # Wait for the parent (System Preferences applet) to die, by reading from
+  # stdin until the pipe is broken.
+  cat

[Jamie, 2012/05/23 01:17:17]

Yuck :(

Also, we don't currently use "set -e" in this script, but "cat | true" would
make this safe in case we ever did (and this code path could easily be missed
otherwise). I'm assuming here that cat returns an error when the parent quits.
Similarly, you might want to pipe its stderr to /dev/null.

[Lambros, 2012/05/24 00:54:50]

Done.

+  open "$PREF_PANE_BUNDLE"
 elif [[ "$1" = "--run-from-launchd" ]]; then
   run_host
 else