Removed unused ext.browserAction.setTitle function

chrome/ext/background.js

 /*
  * This file is part of Adblock Plus <http://adblockplus.org/>,
  * Copyright (C) 2006-2013 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 186 matching lines @@
 
   var BrowserAction = function(tabId)
   {
     this._tabId = tabId;
   };
   BrowserAction.prototype = {
     setIcon: function(path)
     {
       chrome.browserAction.setIcon({tabId: this._tabId, path: path});
     },
-    setTitle: function(title)
-    {
-      chrome.browserAction.setTitle({tabId: this._tabId, title: title});
-    },
     setBadge: function(badge)
     {
       if (!badge)
       {
         chrome.browserAction.setBadgeText({
           tabId: this._tabId,
           text: ""
         });
         return;
       }
@@ skipping 348 matching lines @@
       if (isContextMenuHidden)
         return;
 
       chrome.contextMenus.removeAll();
       isContextMenuHidden = true;
     }
   };
 
   ext.onMessage = new BackgroundMessageEventTarget();
 })();