| <html> | |
| <body> | |
| <!-- An empty webpage whose response headers include Accept-CH | |
| header. Fetching this webpage should cause | |
| user-agent to persist origin preferences for the client hints | |
| specified in the Accept-CH header until a Clear-Site-Data header | |
| is sent or user action is take to clear the session or data about | |
| the origin.--> | |
| <script> | |
| window.top.opener.postMessage('Loaded', '*'); | |
| </script> | |
| </body> | |
| </html> |