Issue 1674 - Use String.trim() to strip leading and trailing whitespaces (Chrome/Opera/Safari)

include.postload.js

 /*
  * This file is part of Adblock Plus <http://adblockplus.org/>,
  * Copyright (C) 2006-2014 Eyeo GmbH
  *
  * Adblock Plus is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License version 3 as
  * published by the Free Software Foundation.
  *
  * Adblock Plus is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
@@ skipping 646 matching lines @@
       }
     }
     if (!url)
       return;
 
     // Default title to the URL
     if (!title)
       title = url;
 
     // Trim spaces in title and URL
-    title = title.replace(/^\s+/, "").replace(/\s+$/, "");
-    url = url.replace(/^\s+/, "").replace(/\s+$/, "");
+    title = title.trim();
+    url = url.trim();
     if (!/^(https?|ftp):/.test(url))
       return;
 
     ext.backgroundPage.sendMessage({
       type: "add-subscription",
       title: title,
       url: url
     });
   }, true);
 
@@ skipping 85 matching lines @@
         break;
       default:
         sendResponse({});
         break;
     }
   });
 
   if (window == window.top)
     ext.backgroundPage.sendMessage({type: "report-html-page"});
 }