GitLab

With this change, the caBLE authenticator will advertise with it's
long-term keys and (always) exchange pairing information when doing QR
handshakes. This removes the need to do a QR pairing for every
operation.

BUG=1002262

Change-Id: I1999e3de347f278a460f126c491d185d1cb18e95
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2101288
Commit-Queue: Adam Langley <agl@chromium.org>
Auto-Submit: Adam Langley <agl@chromium.org>
Reviewed-by: Martin Kreichgauer <martinkr@google.com>
Cr-Commit-Position: refs/heads/master@{#750613}