CSP: frame-ancestors Demo
<iframe>
Content-Security-Policy: frame-ancestors 'self'
Content-Security-Policy: frame-ancestors 'none'
<object type="text/html">
Content-Security-Policy: frame-ancestors 'self'
Content-Security-Policy: frame-ancestors 'none'
<object type="image/png">
Content-Security-Policy: frame-ancestors 'self'
Content-Security-Policy: frame-ancestors 'none'
<img>
Content-Security-Policy: frame-ancestors 'self'
Content-Security-Policy: frame-ancestors 'none'
