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..0a4f0f3735f47be0055743a1acc565c95e1088c0 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 [[ "$1" = "--relaunch-prefpane" ]]; then
+  # Wait for the parent (System Preferences applet) to die, by reading from
+  # stdin until the pipe is broken.
+  cat 2>/dev/null || true
+  open "$PREF_PANE_BUNDLE"
 elif [[ "$1" = "--run-from-launchd" ]]; then
   run_host
 else