Issue 5184 - Support Firefox-specific webRequest types

ext/background.js

 /*
  * This file is part of Adblock Plus <https://adblockplus.org/>,
  * Copyright (C) 2006-2017 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 472 matching lines @@
 
   chrome.windows.onFocusChanged.addListener(windowId =>
   {
     if (windowId != chrome.windows.WINDOW_ID_NONE)
       updateContextMenu();
   });
 
 
   /* Web requests */
 
+  const resourceTypeMap = Object.freeze(Object.assign(Object.create(null),
+    {
+      web_manifest: "OTHER",
+      xml_dtd: "OTHER",
+      xslt: "OTHER",
+      imageset: "IMAGE",
+      beacon: "PING"
+    }
+  ));
+
   let framesOfTabs = Object.create(null);
 
   ext.getFrame = (tabId, frameId) =>
   {
     return (framesOfTabs[tabId] || {})[frameId];
   };
 
   let handlerBehaviorChangedQuota =
     chrome.webRequest.MAX_HANDLER_BEHAVIOR_CHANGED_CALLS_PER_10_MINUTES;
 
@@ skipping 83 matching lines @@
     let {frameId, type} = details;
     if (type == "sub_frame")
     {
       frameId = details.parentFrameId;
       type = "SUBDOCUMENT";
     }
 
     let frame = ext.getFrame(details.tabId, frameId);
     if (frame)
     {
+      type = resourceTypeMap[type] || type.toUpperCase();
+
       let results = ext.webRequest.onBeforeRequest._dispatch(
-        url, type.toUpperCase(), new Page({id: details.tabId}), frame
+        url, type, new Page({id: details.tabId}), frame
       );
 
       if (results.indexOf(false) != -1)
         return {cancel: true};
     }
   }, {urls: ["<all_urls>"]}, ["blocking"]);
 
 
   /* Message passing */
 
@@ skipping 123 matching lines @@
   ext.windows = {
     create(createData, callback)
     {
       chrome.windows.create(createData, createdWindow =>
       {
         afterTabLoaded(callback)(createdWindow.tabs[0]);
       });
     }
   };
 }());