The App Ops app, removed by Google in Android 4.4.2
Among these steps that EFF is asking for is a single switch (toggle or otherwise) that would allow Android users to shut down all identifying data by an app including phone numbers, IMEI numbers and information about individual accounts. The organization would also like to see a way to shutdown many apps' ability to access the cellular pipeline used by a phone's owner. Certain apps do not need to be able to access the network. EFF also wants a way to make App Ops less hidden and more integrated into the OS.
Assuming that Google isn't blowing smoke, and App Ops does break third party apps, there is no reason why Google couldn't rework it and have it eventually available in the Google Play Store. On the other hand, if Google is just loathe to give Android users' ultimate control over app permissions, then you have a better shot at finding Jimmy Hoffa than you do seeing App Ops on the Android OS again.
source: EFF, Reuters