device/fido: complete some TODOs in HID code.

Change-Id: Ibf22af9d53824ecc1762492543ed505898dc0e28
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1560511
Commit-Queue: Adam Langley <agl@chromium.org>
Reviewed-by: Martin Kreichgauer <martinkr@google.com>
Cr-Commit-Position: refs/heads/master@{#650629}
2 files changed