fido: implement authenticatorCredentialManagement in VirtualCtap2Device

Bug: 955859
Change-Id: I624c7dc6b6fc4693f67de0db4d25018e46ea2016
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1580591
Reviewed-by: Adam Langley <agl@chromium.org>
Commit-Queue: Martin Kreichgauer <martinkr@google.com>
Cr-Commit-Position: refs/heads/master@{#653690}
12 files changed