am 6888bee5: am 5a0cc789: am 2ed5f771: am 47231936: am 02bc4b04: am 4a62a6dc: am 451ed5f0: am 3ecaa88d: am ecb013db: Merge "Use hidden API to validate APK chains" into jb-dev

* commit '6888bee598b8c88f7a93ef2da06dd5659cc92dc6':
  Use hidden API to validate APK chains