merge_pr_52983

[FedCM] Abort when an accounts fetch failed before OnClose

If we did get a signin status change and the accounts fetch failed, we
should abort the flow in OnClose, to avoid getting stuck with a useless
dialog.

Bug: 421889736
Change-Id: I330db6257c17804214f0e24e3220680d954d43b3
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/6617245
Commit-Queue: Christian Biesinger cbiesinger@chromium.org
Reviewed-by: Nicolás Peña npm@chromium.org
Cr-Commit-Position: refs/heads/main@{#1470061}