This module is intended to be used with MageSpecialist Chrome Toolbar.
Readme and installation guide can be found here: https://github.com/magespecialist/mage-chrome-toolbar
This module is also available for Magento 1: https://github.com/magespecialist/m1-MSP_DevTools/
Please refer to this page: https://github.com/magespecialist/mage-chrome-toolbar#installing-on-magento-2