am a5e5a459: am e7df2e3f: am f6457d05: Merge "Retroactively add EffectiveNavigation and TabCompat sample code." into jb-dev

* commit 'a5e5a459c06c4897dc61a508ba63e3ba239c7c3b':
  Retroactively add EffectiveNavigation and TabCompat sample code.