| Index: chrome/ext/popup.js | 
| diff --git a/chrome/ext/popup.js b/chrome/ext/popup.js | 
| index 40932374211505989553c15352d2e7215e7d07da..bb2be8eec4f3f82302bf47a4ab52dd0252654713 100644 | 
| --- a/chrome/ext/popup.js | 
| +++ b/chrome/ext/popup.js | 
| @@ -1,9 +1,10 @@ | 
| -(function() | 
| +"use strict"; | 
| + | 
| { | 
| -  var backgroundPage = chrome.extension.getBackgroundPage(); | 
| +  let backgroundPage = chrome.extension.getBackgroundPage(); | 
| window.ext = Object.create(backgroundPage.ext); | 
|  | 
| -  ext.closePopup = function() | 
| +  ext.closePopup = () => | 
| { | 
| window.close(); | 
| }; | 
| @@ -13,9 +14,6 @@ | 
| ext.backgroundPage = { | 
| sendMessage: chrome.runtime.sendMessage, | 
|  | 
| -    getWindow: function() | 
| -    { | 
| -      return backgroundPage; | 
| -    } | 
| +    getWindow: () => backgroundPage | 
| }; | 
| -})(); | 
| +} | 
|  |