/etc/xul-ext/google-tasks-sync.js is in xul-ext-google-tasks-sync 0.5.1-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 | // Place your preferences for xul-ext-google-tasks-sync in this file.
// You can override here the preferences specified in
// /usr/share/xul-ext/google-tasks-sync/defaults/preferences/defaults.js
|