/usr/share/xul-ext/https-everywhere/chrome/content/ is in xul-ext-https-everywhere 4.0.2-3.
This file is owned by root:root, with mode 0o755.
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/usr/share/xul-ext/https-everywhere/chrome/content/about.xul
/usr/share/xul-ext/https-everywhere/chrome/content/code/
/usr/share/xul-ext/https-everywhere/chrome/content/code/AndroidUI.jsm
/usr/share/xul-ext/https-everywhere/chrome/content/code/ApplicableList.js
/usr/share/xul-ext/https-everywhere/chrome/content/code/ChannelReplacement.js
/usr/share/xul-ext/https-everywhere/chrome/content/code/Cookie.js
/usr/share/xul-ext/https-everywhere/chrome/content/code/HTTPS.js
/usr/share/xul-ext/https-everywhere/chrome/content/code/HTTPSRules.js
/usr/share/xul-ext/https-everywhere/chrome/content/code/IOUtil.js
/usr/share/xul-ext/https-everywhere/chrome/content/code/NSS.js
/usr/share/xul-ext/https-everywhere/chrome/content/code/Root-CAs.js
/usr/share/xul-ext/https-everywhere/chrome/content/code/STS.js
/usr/share/xul-ext/https-everywhere/chrome/content/code/Thread.js
/usr/share/xul-ext/https-everywhere/chrome/content/code/X509ChainWhitelist.js
/usr/share/xul-ext/https-everywhere/chrome/content/code/sha256.js
/usr/share/xul-ext/https-everywhere/chrome/content/fetch-source.js
/usr/share/xul-ext/https-everywhere/chrome/content/fetch-source.xul
/usr/share/xul-ext/https-everywhere/chrome/content/meta-preferences.xul
/usr/share/xul-ext/https-everywhere/chrome/content/observatory-popup.xul
/usr/share/xul-ext/https-everywhere/chrome/content/observatory-preferences.xul
/usr/share/xul-ext/https-everywhere/chrome/content/observatory-warning.xul
/usr/share/xul-ext/https-everywhere/chrome/content/observatory-xul.js
/usr/share/xul-ext/https-everywhere/chrome/content/preferences.css
/usr/share/xul-ext/https-everywhere/chrome/content/preferences.js
/usr/share/xul-ext/https-everywhere/chrome/content/preferences.xul
/usr/share/xul-ext/https-everywhere/chrome/content/rules/
/usr/share/xul-ext/https-everywhere/chrome/content/rules/00README
/usr/share/xul-ext/https-everywhere/chrome/content/ruleset-tests-status.css
/usr/share/xul-ext/https-everywhere/chrome/content/ruleset-tests-status.js
/usr/share/xul-ext/https-everywhere/chrome/content/ruleset-tests-status.xul
/usr/share/xul-ext/https-everywhere/chrome/content/ruleset-tests.js
/usr/share/xul-ext/https-everywhere/chrome/content/toolbar_button.js
/usr/share/xul-ext/https-everywhere/chrome/content/toolbar_button.xul
/usr/share/xul-ext/https-everywhere/chrome/content/toolbar_button_binding.xml