title: Giving an Android app root permission
body: <p>Using adb.exe that comes with the Android SDK, I can get root access to an Android device.
  For testing purposes, I would like to give an Android app root permissions as well.
  I know that app is running under a particular account called app_68.
  Is there an adb shell command to add app_68 to the "root group"?</p>
  
  <p>Thanks in advance for your comments/solutions.</p>