GitLab

Make lacros-chrome able to query the id of an active device.

BUG=b:173113548

Change-Id: I0169592ddf95d8cadca6806ac1a671eb06bc87fc
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2536662
Commit-Queue: Yu-Hsuan Hsu <yuhsuan@chromium.org>
Reviewed-by: Dale Curtis <dalecurtis@chromium.org>
Cr-Commit-Position: refs/heads/master@{#828555}