GitLab

We are deprecating attestation methods by CryptohomeClient.

BUG=b:158955123
TEST=unit_tests and browser_tests.

Change-Id: I4a302a38cf48060352477f48775aa5d2a0f27b35
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2466004Reviewed-by: Maksim Ivanov <emaxx@chromium.org>
Commit-Queue: Leo Lai <cylai@google.com>
Cr-Commit-Position: refs/heads/master@{#819709}