/usr/share/ubuntu/settings/system/ is in ubuntu-system-settings-online-accounts 0.7+16.04.20160322-0ubuntu1.
This file is owned by root:root, with mode 0o755.
..
/usr/share/ubuntu/settings/system/icons/
/usr/share/ubuntu/settings/system/icons/settings-accounts.svg
/usr/share/ubuntu/settings/system/online-accounts.settings
/usr/share/ubuntu/settings/system/qml-plugins/
/usr/share/ubuntu/settings/system/qml-plugins/online-accounts/
/usr/share/ubuntu/settings/system/qml-plugins/online-accounts/AccountEditPage.qml
/usr/share/ubuntu/settings/system/qml-plugins/online-accounts/AccountItem.qml
/usr/share/ubuntu/settings/system/qml-plugins/online-accounts/AccountsPage.qml
/usr/share/ubuntu/settings/system/qml-plugins/online-accounts/AddAccountLabel.qml
/usr/share/ubuntu/settings/system/qml-plugins/online-accounts/MainPage.qml
/usr/share/ubuntu/settings/system/qml-plugins/online-accounts/NewAccountPage.qml
/usr/share/ubuntu/settings/system/qml-plugins/online-accounts/NoAccountsPage.qml
/usr/share/ubuntu/settings/system/qml-plugins/online-accounts/NormalStartupPage.qml
/usr/share/ubuntu/settings/system/qml-plugins/online-accounts/ProviderPluginList.qml
/usr/share/ubuntu/settings/system/qml-plugins/online-accounts/ProvidersList.qml