Intent to Prototype: Cross-origin opener policy reporting API

[Camille Lamy]

Contact emails cl...@chromium.org Explainer https://github.com/camillelamy/explainers/blob/master/coop_reporting.md Design docs/spec Specification (first spec PR): https://github.com/whatwg/html/pull/5518 TAG review https://github.com/w3ctag/design-reviews/issues/527 Summary Provide a reporting API developers can use to help deploy cross-origin opener policy. Debuggability This should help with COOP debuggability as DevTools will be able to hook in the same places as we send reports and use this to surface useful information to developers trying to enable COOP. Will this feature be supported on all six Blink platforms (Windows, Mac, Linux, Chrome OS, Android, and Android WebView)? No All platforms will be supported except Android WebView. The underlying COOP feature requires multiple renderer processes which Android WebView cannot provide. Is this feature fully tested by web-platform-tests? Yes We plan on fully testing this feature using WebPlatform tests. Our tests are part of the cross-origin opener policy suite (tests marked as reporting), and we are currently expending them. https://wpt.fyi/results/html/cross-origin-opener-policy?label=experimental&label=master&aligned Link to entry on the Chrome Platform Status https://www.chromestatus.com/feature/5755687994916864