This is called from Settings that has a button to clear secure
adb public keys installed on the device.
Change-Id: I63ef499c049766ef13ea6cb0594ed6719f35e5f3
The UsbDebuggingManager listens to adbd requests and displays a dialog
when the public key authentification fails, for the user to confirm if it
wants to allow USB debugging from the attached host. If the user chooses
to always allow USB debugging, the UsbDebuggingManager writes the public
key to adbd's config file so that the public key authenfication succeeds
next time.
Change-Id: I115c828331d8e326c380844ee33915d5dff22260
