Refactor AttestationRecordContext am: 903367c5ed am: f83f3741ac

Original change: https://android-review.googlesource.com/c/platform/system/keymaster/+/1530451

MUST ONLY BE SUBMITTED BY AUTOMERGER

Change-Id: Ida3e154cea068bc14b9a9eda4d580c3eb4a6cf54