If your browser supports origin-keyed agent clusters, then following iframe:
- should be in a separate process; check with, e.g., the Chrome Task Manager, Shift+Esc.
- when you click the WebAssembly.Module button, should display that it got a
messageerror event.
- when you click the sync script button, should display an error.
Note that the iframe does not send the Origin-Agent-Cluster header. This demo shows how the outer page can origin-key itself, even without the cooperation of the iframe.