GitLab

Changed registration API to work for one network at once.
Fixed comments.
Replaced argument GCDDevice with just string id.

BUG=383167
R=alexsemenov@chromium.org, asargent@chromium.org, asvitkine@chromium.org, noamsml@chromium.org

Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=282099

Review URL: https://codereview.chromium.org/363883002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@282273 0039d316-1c4b-4281-b951-d872f2087c98