GitLab

Add `ShowAddAccountDialog` and `ShowReauthAccountDialog`
methods to `AccountManagerFacade`.

Bug: 1140469
Change-Id: I0d3d1d25b30d872412972fba039379f349fe59f2
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2550669
Commit-Queue: Anastasiia N <anastasiian@chromium.org>
Reviewed-by: Kush Sinha <sinhak@chromium.org>
Reviewed-by: James Cook <jamescook@chromium.org>
Reviewed-by: Boris Sazonov <bsazonov@chromium.org>
Cr-Commit-Position: refs/heads/master@{#841424}