Firefox Sync on the Chromium backend

[javifernandez]

Is your feature request related to a problem? Please describe.
Wolvic (Chromium) 0.9 doesn't offer the Firefox Sync service anymore

Describe the solution you'd like
Being able to sync bookmarks, history and logins with Firefox desktop app

Describe alternatives you've considered

Additional context

[javifernandez]

I've been trying to implement this feature using the mozilla android components, but the problem is that they use an extension to handle the communication with the browser via WebChannels. Since the Chromium backend doesn't have support for web extensions yet, we would need to fogure out an alternate approach.