An early draft of an async cookies API explainer is now available in the GitHub repo:

https://github.com/bsittler/async-cookies-api/blob/master/explainer.md

Your feedback on the draft is certainly valued! At this stage (prior to any implementation in chromium) the GitHub issue tracker is the best place to discuss issues and enhancements relating to the proposal.

The discussion has been moved to WICG GitHub now:

https://github.com/WICG/async-cookies-api

Related WICG discourse forum topic:

https://discourse.wicg.io/t/rfc-proposal-for-an-asynchronous-cookies-api/1652

The explainer is somewhat improved since the last time it was linked here:

https://github.com/WICG/async-cookies-api/blob/gh-pages/explainer.md

There is also a document-based polyfill:

https://github.com/WICG/async-cookies-api/blob/gh-pages/cookies.js

As always, feedback is very much appreciated!

OWP launch tracking bug
https://crbug.com/729800
 
Link to entry on the feature dashboard
https://www.chromestatus.com/feature/5658847691669504

Blink Intent to Implement discussion: https://groups.google.com/a/chromium.org/d/msg/blink-dev/gU-tSdjR4rA/hAYgmxiHCAAJ

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/9eaf6c8c7ed01ca9d60138961a643284f4297be7

commit 9eaf6c8c7ed01ca9d60138961a643284f4297be7
Author: Benjamin C. Wiley Sittler <bsittler@chromium.org>
Date: Wed Nov 08 22:04:58 2017

Async Cookies API: First layout tests.

R=pwnall@chromium.org

Bug: 602752
Bug: 729800
Change-Id: I3f6ff95ab82e7c00f9dfff1b612aa2be9761c91f
Reviewed-on: https://chromium-review.googlesource.com/594890
Commit-Queue: Benjamin Wiley Sittler <bsittler@chromium.org>
Reviewed-by: Victor Costan <pwnall@chromium.org>
Cr-Commit-Position: refs/heads/master@{#514961}
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