Issue 1853 - Moved filter generation into background page

background.js

 /*
  * This file is part of Adblock Plus <https://adblockplus.org/>,
  * Copyright (C) 2006-2015 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 38 matching lines @@
 }
 var FilterStorage = require("filterStorage").FilterStorage;
 var ElemHide = require("elemHide").ElemHide;
 var defaultMatcher = require("matcher").defaultMatcher;
 var Prefs = require("prefs").Prefs;
 var Synchronizer = require("synchronizer").Synchronizer;
 var Utils = require("utils").Utils;
 var NotificationStorage = require("notification").Notification;
 var initAntiAdblockNotification = require("antiadblockInit").initAntiAdblockNotification;
 var parseFilters = require("filterValidation").parseFilters;
+var composeFilters = require("filterComposer").composeFilters;
 
 // Some types cannot be distinguished
 RegExpFilter.typeMap.OBJECT_SUBREQUEST = RegExpFilter.typeMap.OBJECT;
 RegExpFilter.typeMap.MEDIA = RegExpFilter.typeMap.FONT = RegExpFilter.typeMap.OTHER;
 
 // Chrome on Linux does not fully support chrome.notifications until version 35
 // https://code.google.com/p/chromium/issues/detail?id=291485
 var canUseChromeNotifications = require("info").platform == "chromium"
   && "notifications" in chrome
   && (navigator.platform.indexOf("Linux") == -1 || parseInt(require("info").applicationVersion, 10) > 34);
@@ skipping 480 matching lines @@
         page.sendMessage(msg);
       });
       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(
+        msg.tagName, msg.id, msg.src, msg.style,
+        msg.classes, msg.urls, new URL(msg.baseURL)
+      ));
+      break;
     case "forward":
       if (sender.page)
       {
         if (msg.expectsResponse)
         {
           sender.page.sendMessage(msg.payload, sendResponse);
           return true;
         }
 
         sender.page.sendMessage(msg.payload);
       }
       break;
   }
 });
 
 // update icon when page changes location
 ext.pages.onLoading.addListener(function(page)
 {
   page.sendMessage({type: "clickhide-deactivate"});
   refreshIconAndContextMenu(page);
 });
 
 setTimeout(function()
 {
   var notificationToShow = NotificationStorage.getNextToShow();
   if (notificationToShow)
     showNotification(notificationToShow);
 }, 3 * 60 * 1000);