Issue 5760 - Use relative require paths

lib/csp.js

 /*
  * This file is part of Adblock Plus <https://adblockplus.org/>,
  * Copyright (C) 2006-present 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
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  * GNU General Public License for more details.
  *
  * You should have received a copy of the GNU General Public License
  * along with Adblock Plus.  If not, see <http://www.gnu.org/licenses/>.
  */
 
 "use strict";
 
-const {defaultMatcher} = require("matcher");
-const {RegExpFilter, WhitelistFilter} = require("filterClasses");
+const {defaultMatcher} = require("../adblockpluscore/lib/matcher");
+const {RegExpFilter, WhitelistFilter} =
+  require("../adblockpluscore/lib/filterClasses");
 const {extractHostFromFrame, getDecodedHostname,
-       isThirdParty, stringifyURL} = require("url");
-const {checkWhitelisted} = require("whitelisting");
+       isThirdParty, stringifyURL} = require("./url");
+const {checkWhitelisted} = require("./whitelisting");
 const {FilterNotifier} = require("filterNotifier");
-const devtools = require("devtools");
+const devtools = require("./devtools");
 
 const {typeMap} = RegExpFilter;
 
 browser.webRequest.onHeadersReceived.addListener(details =>
 {
   let url = new URL(details.url);
   let urlString = stringifyURL(url);
   let parentFrame = ext.getFrame(details.tabId, details.parentFrameId);
   let hostname = extractHostFromFrame(parentFrame) || getDecodedHostname(url);
   let thirdParty = isThirdParty(url, hostname);
@@ skipping 33 matching lines @@
       name: "Content-Security-Policy",
       value: cspMatch.csp
     });
 
     return {responseHeaders: details.responseHeaders};
   }
 }, {
   urls: ["http://*/*", "https://*/*"],
   types: ["main_frame", "sub_frame"]
 }, ["blocking", "responseHeaders"]);