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We are deprecating GetTpmStatus APIs by cryptohome.
Also, GetLoginStatus is a better fit to reporting "lock to single user"
status.

BUG=b:172748724
TEST=unit_tests.

Cq-Depend: chromium:2586412
Change-Id: I096e09c8ecbc670b03f375f059f70d466f8839e8
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2586414
Commit-Queue: Leo Lai <cylai@google.com>
Reviewed-by: Maksim Ivanov <emaxx@chromium.org>
Cr-Commit-Position: refs/heads/master@{#836529}