GitLab

Extend interface of the PinDialogManager class to allow dynamically
adding and removing custom PIN dialog host implementations.

This will be used in follow-up CLs for supporting showing the PIN
request on Chrome OS Login/Lock screens.

Bug: 964069
Change-Id: I238a3af5b110bf434d9af7bbbfa109d6575721cb
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1730896
Commit-Queue: Maksim Ivanov <emaxx@chromium.org>
Reviewed-by: Igor <igorcov@chromium.org>
Cr-Commit-Position: refs/heads/master@{#683430}