chromium/third_party/blink/web_tests/virtual/coop-noopener-allow-popups/README.md

This virtual test suite runs tentative COOP: noopener-allow-popups wpts with the
CoopNoopenerAllowPopups flag enabled.

See [Explainer](https://gist.github.com/yoavweiss/c7b61e97e6f8d207be619f87ab96ead5) and
[HTML PR](https://github.com/whatwg/html/pull/10394).