persistented -> persisted

lib/browser/chrome-extension.js

@@ -132,7 +132,7 @@ app.once('ready', function() {
     return delete extensionInfoMap[name];
   };
 
-  // Load persistented extensions when devtools is opened.
+  // Load persisted extensions when devtools is opened.
   init = BrowserWindow.prototype._init;
   return BrowserWindow.prototype._init = function() {
     init.call(this);