/usr/share/xul-ext/google-tasks-sync/resources/ is in xul-ext-google-tasks-sync 0.5.1-1.
This file is owned by root:root, with mode 0o755.
..
/usr/share/xul-ext/google-tasks-sync/resources/jsio/
/usr/share/xul-ext/google-tasks-sync/resources/jsio/jsio.js
/usr/share/xul-ext/google-tasks-sync/resources/oauthorizer/
/usr/share/xul-ext/google-tasks-sync/resources/oauthorizer/LICENSE
/usr/share/xul-ext/google-tasks-sync/resources/oauthorizer/README.md
/usr/share/xul-ext/google-tasks-sync/resources/oauthorizer/content/
/usr/share/xul-ext/google-tasks-sync/resources/oauthorizer/content/authorize.xhtml
/usr/share/xul-ext/google-tasks-sync/resources/oauthorizer/content/authorizeDialog.css
/usr/share/xul-ext/google-tasks-sync/resources/oauthorizer/content/loginPanel.js
/usr/share/xul-ext/google-tasks-sync/resources/oauthorizer/content/loginPanel.xul
/usr/share/xul-ext/google-tasks-sync/resources/oauthorizer/content/overlay.xul
/usr/share/xul-ext/google-tasks-sync/resources/oauthorizer/locale/
/usr/share/xul-ext/google-tasks-sync/resources/oauthorizer/locale/en-US/
/usr/share/xul-ext/google-tasks-sync/resources/oauthorizer/locale/en-US/login.dtd
/usr/share/xul-ext/google-tasks-sync/resources/oauthorizer/locale/en-US/login.properties
/usr/share/xul-ext/google-tasks-sync/resources/oauthorizer/modules/
/usr/share/xul-ext/google-tasks-sync/resources/oauthorizer/modules/log4moz.js
/usr/share/xul-ext/google-tasks-sync/resources/oauthorizer/modules/oauth.jsm
/usr/share/xul-ext/google-tasks-sync/resources/oauthorizer/modules/oauthconsumer.js
/usr/share/xul-ext/google-tasks-sync/resources/oauthorizer/oauth/
/usr/share/xul-ext/google-tasks-sync/resources/oauthorizer/oauth/oauth.js
/usr/share/xul-ext/google-tasks-sync/resources/oauthorizer/oauth/sha1.js
/usr/share/xul-ext/google-tasks-sync/resources/oauthorizer/skin/
/usr/share/xul-ext/google-tasks-sync/resources/oauthorizer/skin/oauth.css