Previously it skips the device permission check by referring package
name. The CL removes the special case and use general MANAGE_USB
system-only permission to skip USB device permission dialog.
BUG=26048722
Change-Id: I3702393a50696209499d1e5f6549dab9fb2cefe4
Now default configuration of proguard can handle internal VisibleForTesting
annotation. We don't need to have local configuration.
BUG=20274999
Change-Id: Ib21e07336e48dda71d0d2644ddd86422414f7524
These methods will be called in the following CL from the service that handles
USB attach and detach intent.
BUG=20274999
Change-Id: I7b3c658afc5750d6a2713c07f40c59b26dcd1460