Global Privacy Control (GPC) "Sec-GPC" HTTP header

[skotfred]

Some browsers are starting to support the "Sec-GPC" HTTP Header

https://globalprivacycontrol.org/#download

[Schweinepriester]

• Spec: https://globalprivacycontrol.github.io/gpc-spec/
• Wiki: https://en.wikipedia.org/wiki/Do_Not_Track#Global_Privacy_Control
• Chrome: https://bugs.chromium.org/p/chromium/issues/detail?id=1171730
• Firefox:
  • https://bugzilla.mozilla.org/show_bug.cgi?id=1670058
  • Can be enabled in 95 (not sure if we should regard that as "behind a flag"): https://blog.mozilla.org/netpolicy/2021/10/28/implementing-global-privacy-control/
• Tests: https://global-privacy-control.glitch.me/ (via https://globalprivacycontrol.org/)