Issue 3687 - Add experimental support for Safari content blockers

safari/ext/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 402 matching lines @@
             event.message = (results.indexOf(false) == -1);
             break;
           case "request":
             var response = null;
             var sendResponse = function(message) { response = message; };
 
             ext.onMessage._dispatch(message.payload, sender, sendResponse);
 
             event.message = response;
             break;
+          case "useContentBlockerAPI":
+            event.message = require("prefs").Prefs["safariContentBlocker"];
+            break;
         }
         break;
       case "request":
         sender.page._messageProxy.handleRequest(message, sender);
         break;
       case "response":
         // All documents within a page have the same pageId and that's all we
         // care about here.
         var pageId = tab._documentLookup[message.targetDocuments[0]].pageId;
         pages[pageId]._messageProxy.handleResponse(message);
@@ skipping 154 matching lines @@
   /* Windows */
   ext.windows = {
     // Safari doesn't provide as rich a windows API as Chrome does, so instead
     // of chrome.windows.create we have to fall back to just opening a new tab.
     create: function(createData, callback)
     {
       ext.pages.open(createData.url, callback);
     }
   };
 })();