Iframe credentialless (WIP)

[ArthurSonzogni]

Explainer and spec:
https://arthursonzogni.github.io/anonymous-iframe/

Iframe credentialless require updating several specifications:

Spec	PR
HTML	whatwg/html#7695
Fetch	#1416 (this)
Storage	whatwg/storage#139
CHIPS/Cookies	XXX

Summary:

• Plumb environment'spartition-nonce in the network-partition-key. The value is filled
  from the HTML specification.

(See WHATWG Working Mode: Changes for more details.)

• At least two implementers are interested (and none opposed):
  • Chrome: https://chromestatus.com/feature/5729461725036544
  • …
• Tests are written and can be reviewed and commented upon at:
  • https://wpt.fyi/results/html/anonymous-iframe
• Implementation bugs are filed:
  • Chrome: https://crbug.com/1226469
  • Firefox: …
  • Safari: …
  • Deno: N/A
  • Node.js: N/A

(See WHATWG Working Mode: Changes for more details.)

---

Preview | Diff

[ArthurSonzogni]

This is still WIP. I am not requesting a review now, but you can take a look if you are curious.
I guess you can add: (addition/proposal) / (needs implementer interest)

I still need to figure out to describe how this integrate with storage-partitioning, CHIPS, etc...
I would like at the end to have a "WICG/anonymous-iframe" document with an introduction, a gathering of the different PR needed, and a Security/Privacy section, so that one can understand anonymous iframe in a single view.
Here is the WIP: https://arthursonzogni.github.io/anonymous-iframe/#spec-html