/usr/share/ is in xul-ext-searchload-options 0.8.0-2.
This file is owned by root:root, with mode 0o755.
..
/usr/share/mozilla/
/usr/share/mozilla/extensions/
/usr/share/mozilla/extensions/{ec8030f7-c20a-464f-9b0e-13a3a9e97384}/
/usr/share/doc/
/usr/share/doc/xul-ext-searchload-options/
/usr/share/doc/xul-ext-searchload-options/copyright
/usr/share/doc/xul-ext-searchload-options/changelog.gz
/usr/share/doc/xul-ext-searchload-options/changelog.Debian.gz
/usr/share/xul-ext/
/usr/share/xul-ext/searchload-options/
/usr/share/xul-ext/searchload-options/bootstrap.js
/usr/share/xul-ext/searchload-options/skin/
/usr/share/xul-ext/searchload-options/skin/classic/
/usr/share/xul-ext/searchload-options/skin/classic/search-options.css
/usr/share/xul-ext/searchload-options/skin/classic/icon.png
/usr/share/xul-ext/searchload-options/skin/classic/menuitem-icon.png
/usr/share/xul-ext/searchload-options/locale/
/usr/share/xul-ext/searchload-options/locale/ja-JP/
/usr/share/xul-ext/searchload-options/locale/ja-JP/searchbar.properties
/usr/share/xul-ext/searchload-options/locale/ja-JP/search-options.dtd
/usr/share/xul-ext/searchload-options/locale/de/
/usr/share/xul-ext/searchload-options/locale/de/searchbar.properties
/usr/share/xul-ext/searchload-options/locale/de/search-options.dtd
/usr/share/xul-ext/searchload-options/locale/nl/
/usr/share/xul-ext/searchload-options/locale/nl/searchbar.properties
/usr/share/xul-ext/searchload-options/locale/nl/search-options.dtd
/usr/share/xul-ext/searchload-options/locale/zh-TW/
/usr/share/xul-ext/searchload-options/locale/zh-TW/searchbar.properties
/usr/share/xul-ext/searchload-options/locale/zh-TW/search-options.dtd
/usr/share/xul-ext/searchload-options/locale/uk-UA/
/usr/share/xul-ext/searchload-options/locale/uk-UA/searchbar.properties
/usr/share/xul-ext/searchload-options/locale/uk-UA/search-options.dtd
/usr/share/xul-ext/searchload-options/locale/lt-LT/
/usr/share/xul-ext/searchload-options/locale/lt-LT/searchbar.properties
/usr/share/xul-ext/searchload-options/locale/lt-LT/search-options.dtd
/usr/share/xul-ext/searchload-options/locale/pt-BR/
/usr/share/xul-ext/searchload-options/locale/pt-BR/searchbar.properties
/usr/share/xul-ext/searchload-options/locale/pt-BR/search-options.dtd
/usr/share/xul-ext/searchload-options/locale/tr/
/usr/share/xul-ext/searchload-options/locale/tr/searchbar.properties
/usr/share/xul-ext/searchload-options/locale/tr/search-options.dtd
/usr/share/xul-ext/searchload-options/locale/zh-CN/
/usr/share/xul-ext/searchload-options/locale/zh-CN/searchbar.properties
/usr/share/xul-ext/searchload-options/locale/zh-CN/search-options.dtd
/usr/share/xul-ext/searchload-options/locale/el/
/usr/share/xul-ext/searchload-options/locale/el/searchbar.properties
/usr/share/xul-ext/searchload-options/locale/el/search-options.dtd
/usr/share/xul-ext/searchload-options/locale/en-US/
/usr/share/xul-ext/searchload-options/locale/en-US/searchbar.properties
/usr/share/xul-ext/searchload-options/locale/en-US/search-options.dtd
/usr/share/xul-ext/searchload-options/content/
/usr/share/xul-ext/searchload-options/content/search-options.js
/usr/share/xul-ext/searchload-options/content/search-options.xul
/usr/share/xul-ext/searchload-options/install.rdf
/usr/share/xul-ext/searchload-options/chrome.manifest
/usr/share/mozilla/extensions/{ec8030f7-c20a-464f-9b0e-13a3a9e97384}/searchloadoptions@esteban.torres