[UPM-Desktop] Add PasswordManager logos to the app manifest.

This CL add the password manager logo to the WebApp manifest.
Branded and unbranded builds are using different logos, and
branded builds are using a logo from the chromium-internal repository.

Bug: 1358448
Change-Id: I78aa3911391e53c677fee0ada0fc97040344f232
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/4014139


Reviewed-by: Nico Weber <thakis@chromium.org>
Reviewed-by: Viktor Semeniuk <vsemeniuk@google.com>
Reviewed-by: Demetrios Papadopoulos <dpapad@chromium.org>
Commit-Queue: Maria Kazinova <kazinova@google.com>
Cr-Commit-Position: refs/heads/main@{#1072149}