Also note: "Sources close to the development said the deal was expected to be announced in the next few weeks. [...] When contacted, Facebook said "no comments", and an email sent to Little Eye Labs remained unanswered."
Pointing that out only because the headline makes it seem as though the deal has already been announced.
Little Eye Labs offers android app analysis & performance tools. It develops tools that provide detailed insights about the performance of the app. This happens without changing the code or integration. So a dev could debug an android app and find ways to optimize it quite easily without altering their code.