CONSOLE MESSAGE: Refused to display 'https://localhost:9443/common/blank.html' in a frame because of Cross-Origin-Embedder-Policy.
CONSOLE MESSAGE: Sandbox access violation: Blocked a frame at "https://localhost:9443" from accessing a frame at "null".  The frame being accessed is sandboxed and lacks the "allow-same-origin" flag.


PASS Wait for the DOM to be built.
PASS about:srcdoc can always be embedded by a 'require-corp' document
PASS A(B(C)) A=require-corp, B=about:srcdoc, C=no-require-corp => C can't load