- Open
Settings>Extensions. - Check "Developer mode".
- Alternatively, use the URL
chrome://extensions/in your address bar - At the top, click
Load Unpacked Extension. - Navigate to your
metamask-plugin/dist/chromefolder. - Click
Select. - Change to your locale via
chrome://settings/languages - Restart the browser and test the plugin in your locale
You now have the plugin, and can click 'inspect views: background plugin' to view its dev console.