I found some application use permission com.android.vending.BILLING,
uses-permission:'com.android.vending.BILLING'
I cannot find any infomation in source code and Google.
What is it? How to use it?
This is for In-App billing.
In-app Billing on Google Play provides a straightforward, simple interface for sending In-app Billing requests and managing In-app Billing transactions using Google Play. The information below covers the basics of how to make calls from your application to the In-app Billing service using the Version 3 API.
Ref : Documentation and how to use and Administering In-app Billing