GitLab

CTAP HID transport specification adds KEEP_ALIVE command. Add logic for
handling keep alive messages. That is, message from HID device should be
re-read after 100 milliseconds.

Change-Id: Iecb002f141d1a57f5753d25d728a5f1d851323db
Reviewed-on: https://chromium-review.googlesource.com/947193
Commit-Queue: Jun Choi <hongjunchoi@chromium.org>
Reviewed-by: Jan Wilken Dörrie <jdoerrie@chromium.org>
Cr-Commit-Position: refs/heads/master@{#548626}