Permissions-Policy: window-management

The HTTP Permissions-Policy header window-management directive controls whether or not the current document is allowed to use the Window Management API to manage windows on multiple displays.

Where this policy forbids use of the API:

• The Promise returned by the Window.getScreenDetails() method will reject with a NotAllowedError exception.
• The Window.screen.isExtended property will always return false.

Permissions-Policy: window-management=<allowlist>;