Google released a blog post about limiting private API availability in Chromium. The company discovered that some third-party Chromium-based browsers were able to integrate Google features, such as Chrome sync and Click to Call.
The limitation will start on March 15
Users who accessed Google features (like Chrome sync) through a third-party Chromium-based browser, their data will continue to be available in their Google Account, and data that they have stored locally will continue to be available locally.
Google explained the limitations, saying,
“During a recent audit, we discovered that some third-party Chromium-based browsers were able to integrate Google features, such as Chrome sync and Click to Call, that is only intended for Google’s use. This meant that a small fraction of users could sign into their Google Account and store their personal Chrome sync data, such as bookmarks, not just with Google Chrome, but also with some third-party Chromium-based browsers. We are limiting access to our private Chrome APIs starting on March 15, 2021.”