| Index: _locales/en_US/messages.json | 
| =================================================================== | 
| --- a/_locales/en_US/messages.json | 
| +++ b/_locales/en_US/messages.json | 
| @@ -117,6 +117,15 @@ | 
| "out_of_date_lists": { | 
| "message": "Out-of-date lists are updated periodically." | 
| }, | 
| + "overlay_notification_closing_button_hide": { | 
| + "message": "Close this notification" | 
| + }, | 
| + "overlay_notification_closing_button_optout": { | 
| + "message": "Stop showing notifications" | 
| + }, | 
| + "overlay_shownotifications_label": { | 
| + "message": "Show useful notifications" | 
| + }, | 
| "remove_button": { | 
| "description": "This is the label for the 'Remove selected' buttons.", | 
| "message": "Remove selected" |