Bug 938896 - Add MockDeviceStorage.
Bug 938896 - Add MockGeolocation.
Bug 938896 - Add minimal MockPermissionSettings.
Bug 938905 - Add a message panel to the lock screen.
Bug 938901 - Integrate Find My Device into the System app.
Bug 938898 - Integrate Find My Device into the Settings app.
Bug 938896 - Add a very simple test app for Find My Device.