Add ContactsManager.json. (#6277)
Add ContactsManager.json. (#6277)

* Add ContactsManager.json.

* Update api/ContactsManager.json

Co-authored-by: Florian Scholz <4e7ec6b90be64848476e4adf230da1ba98b663c8@mozilla.com>

Co-authored-by: Florian Scholz <4e7ec6b90be64848476e4adf230da1ba98b663c8@mozilla.com>
chrisdavidmills/browser-compat-data,chrisdavidmills/browser-compat-data,mdn/browser-compat-data,mdn/browser-compat-data