As per discussion with Mihai, Dice is not blocked on this for now.

We'll monitor the AccountReconcilor metrics and can decide to block Dice on this later if we see that there is too much churn on the accounts at startup.

For posterity, I started a CL to add support for oauth multilogin in google_apis:
https://chromium-review.googlesource.com/c/chromium/src/+/702483

I'm not actively working on it, but it could be a good starting point when we pick up this bug again in the future.

Could we include a metric for how many times we "unnecessarily" reconcile (and end up back in the same state)? Maybe a histogram which is a distribution over time for how long these unnecessary reconciles take?

--Chrome Identity automated triaging--

This bug is Assigned and has gone one month without any activity, so it is being moved to Available to indicate that it is not actively being worked on. If you are working on this bug, please mark yourself as the owner and move back to Assigned. Please see https://goo.gl/78kbny for more details. Please remove the Services>SignIn or UI>Browser>Profiles components if this bug isn't related to Chrome Identity.

For more details visit https://www.chromium.org/issue-tracking/autotriage - Your friendly Sheriffbot

 Issue 501352  has been merged into this issue.

 Issue 764305  has been merged into this issue.

Valeriya is going to work on this.