Source: Improving extension transparency for users from Chromium
Later this summer, inline installation will be retired on all platforms. Going forward, users will only be able to install extensions from within the Chrome Web Store, where they can view all information about an extension’s functionality prior to installing.
This change will roll out in three phases:
If you distribute an extension using inline installation, you will need to update install buttons on your website to link to your extension’s Chrome Web Store page prior to the stable release of Chrome 71. And if you haven’t already, be sure to read up on how to create a high quality store listing, and consider using our install badge on your site.
We’re proud of the choices the Chrome Web Store provides users in enhancing their browsing experience. At the same time, it’s crucial that users have robust information about extensions prior to installation, so that they fully understand how their browsing experience will be impacted. We’re confident this change will improve transparency for all users about their extension choices in Chrome.
Posted by James Wagner, Extensions Platform Product Manager