am c9dca45a: am c9217022: am 911c8806: am eeea76c2: am 176d0c68: am a6dfbaf0: am ca789a98: Merge "docs: Code sample for game controller training class." into jb-mr2-docs

* commit 'c9dca45a4f6c06743d9118185114e9bbeaa49efb':
  docs: Code sample for game controller training class.