Iframe credentialless (WIP)

[ArthurSonzogni]

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

Anonymous iframe require updating several specifications:	Spec	PR
HTML	https://github.com/whatwg/html/pull/7695
Fetch	https://github.com/whatwg/fetch/pull/1416
Storage	https://github.com/whatwg/storage/pull/139 (this)
CHIPS/Cookies	XXX

Summary: This patch adds the environment's partition-nonce to the storage-key. from the HTML specification.

• [ ] At least two implementers are interested (and none opposed):
  • Chrome: https://chromestatus.com/feature/5729461725036544
  • …
• [X] 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.)

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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 am working on a WICG/anonymous iframe document gathering every PR needed to implement anonymou iframe.