The extension's name is Chrome Zero and is currently only available on GitHub, and not through the official Chrome Web Store.
Experts said that despite the extension's intrusive behavior, tests showed a minimum performance impact of only 1.54% on resource usage, and an indiscernible page loading latency ranging from 0.01064s and 0.08908s —depending on the number of protection policies active at runtime.
Furthermore, as a side-effect of the extension's "protective measures," the research team says Chrome Zero would have been able to block 50% of the Chrome zero-days detected in the real world since the release of Chrome 49.
The extension may be very well able to thwart even future and unknown Chrome zero-days as well, mainly because of its habit of rewriting dangerous functions to safer versions.
Since the extension is not yet on the Chrome Web Store, users can install it by (1) downloading the extension's source code from GitHub, (2) going to Chrome's extensions management page (chrome://extensions), (3) enabling "Developer Mode," (4) clicking "Load Unpacked," and (5) selecting the folder "/chromezero" from inside the extension's source code.
Once the extension has been loaded and enabled, users can select their desired protection level.