GitLab

We are deprecating attestation methods by CryptohomeClient.

BUG=b:158955123
TEST=unit_tests.

Change-Id: I24821c0ddf1226effbecb687eded8b2523d526e7
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2500388
Commit-Queue: Leo Lai <cylai@google.com>
Reviewed-by: Maksim Ivanov <emaxx@chromium.org>
Cr-Commit-Position: refs/heads/master@{#823063}