Fill name column while exporting Android credentials

For Android credentials `credential.GetURL().host()` returns an
empty string, but app name is expected.
Same behaviour is already implemented on GMS Core and in
the settings UI.

Fixed: 1377291
Change-Id: I107ba6158bcc77b33677ec51799eb01b5a1575d8
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/3970666


Commit-Queue: Andrii Natiahlyi <natiahlyi@google.com>
Reviewed-by: Mohamed Amir Yosef <mamir@chromium.org>
Cr-Commit-Position: refs/heads/main@{#1072215}