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 'c9217022a6fb254f459a6ab14c900ac7ef2d03f1':
  docs: Code sample for game controller training class.