GitLab

This avoids a blocker on removing HASH_VALUE_SHA1 and was unnecessary.
The |key_hash| field can just as easily be a der::Input and BoringSSL
already has abstractions for computing a digest. It also allows us to
fill in missing hash functions.

Bug: 564281
Change-Id: Ib044df61bb7bdfc4c5b021861c8f0561635dc6a8
Reviewed-on: https://chromium-review.googlesource.com/545017Reviewed-by: Matt Mueller <mattm@chromium.org>
Commit-Queue: David Benjamin <davidben@chromium.org>
Cr-Commit-Position: refs/heads/master@{#481929}