Issue 3763 - Got rid of redundant "add-filters" message type

background.js

 /*
  * This file is part of Adblock Plus <https://adblockplus.org/>,
  * Copyright (C) 2006-2016 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 359 matching lines @@
       break;
     case "get-domain-enabled-state":
       // Returns whether this domain is in the exclusion list.
       // The browser action popup asks us this.
       if(sender.page)
       {
         sendResponse({enabled: !checkWhitelisted(sender.page)});
         return;
       }
       break;
-    case "add-filters":
-      var result = parseFilters(msg.text);
-
-      if (result.errors.length > 0)
-      {
-        sendResponse({status: "invalid", error: result.errors.join("\n")});
-        break;
-      }
-
-      for (var i = 0; i < result.filters.length; i++)
-        FilterStorage.addFilter(result.filters[i]);
-
-      sendResponse({status: "ok"});
-      break;
     case "add-sitekey":
       processKey(msg.token, sender.page, sender.frame);
       break;
     case "report-html-page":
       htmlPages.set(sender.page, null);
       refreshIconAndContextMenu(sender.page);
       break;
     case "compose-filters":
       sendResponse(composeFilters({
         tagName: msg.tagName,
@@ skipping 36 matching lines @@
   }
 });
 
 // update icon when page changes location
 ext.pages.onLoading.addListener(function(page)
 {
   page.sendMessage({type: "blockelement-finished"});
   refreshIconAndContextMenu(page);
   showNextNotificationForUrl(page.url);
 });