| Index: lib/whitelisting.js | 
| diff --git a/lib/whitelisting.js b/lib/whitelisting.js | 
| index 93a5a5a20bdb17d166d852bcd1e14da0fcb06914..f5dc81ae4e1508bbb422c0d77e628118b67475ad 100644 | 
| --- a/lib/whitelisting.js | 
| +++ b/lib/whitelisting.js | 
| @@ -21,7 +21,6 @@ | 
|  | 
| const {defaultMatcher} = require("matcher"); | 
| const {RegExpFilter} = require("filterClasses"); | 
| -const {DownloadableSubscription} = require("subscriptionClasses"); | 
| const {FilterNotifier} = require("filterNotifier"); | 
| const {stringifyURL, getDecodedHostname, | 
| extractHostFromFrame, isThirdParty} = require("url"); | 
| @@ -44,9 +43,11 @@ function match(page, url, typeMask, docDomain, sitekey) | 
| ); | 
|  | 
| if (filter && devtools) | 
| +  { | 
| devtools.logWhitelistedDocument( | 
| page, urlString, typeMask, docDomain, filter | 
| ); | 
| +  } | 
|  | 
| return filter; | 
| } | 
| @@ -72,7 +73,7 @@ exports.checkWhitelisted = (page, frame, typeMask) => | 
|  | 
| while (frame && !filter) | 
| { | 
| -      let parent = frame.parent; | 
| +      let {parent} = frame; | 
| let docDomain = extractHostFromFrame(parent); | 
| let sitekey = getKey(page, frame); | 
|  | 
| @@ -190,6 +191,7 @@ function onHeadersReceived(details) | 
| } | 
|  | 
| if (typeof chrome == "object") | 
| +{ | 
| chrome.webRequest.onHeadersReceived.addListener( | 
| onHeadersReceived, | 
| { | 
| @@ -198,3 +200,4 @@ if (typeof chrome == "object") | 
| }, | 
| ["responseHeaders"] | 
| ); | 
| +} | 
|  |