Required-CSP:

Required-CSP:

[1] Renamed `embedding-csp` header to `required-csp` (#218) (andypaicu著, ) <https://github.com/w3c/webappsec-csp/commit/2bc3e195524dccfe1c593fdfb9805c046ec098f7>

[2] Renamed Required-CSP to Sec-Required-CSP (#220) (andypaicu著, ) <https://github.com/w3c/webappsec-csp/commit/17304f702172dbe819781b7055a2c38f70ff621a>