https://security.googleblog.com/2016/05/evolving-safe-browsing-api.html https://developers.google.com/safe-browsing/ https://developers.google.com/safe-browsing/v4/ I'd suggest interested parties take a critical look at this. Particularly the Update API (v4).
Yes, with the caveat that Firefox uses Google's safebrowsing service plus its own safe browsing service for tracking protection. I haven't found a bug report or related discussion that sheds light on Mozilla's thoughts on this situation. Edit: Add support for version 4 of the Safe Browsing protocol https://bugzilla.mozilla.org/showdependencytree.cgi?id=1167038