am 0cb965a6: am 5020a873: Merge "cherrypick from jb-mr2-docs docs: Training class for game controllers. Change-Id: I697770aee8604c965c3730691459c1e8f10705da" into klp-docs

* commit '0cb965a69aac9c2a83798960a0efeaa6e596e445':
  cherrypick from jb-mr2-docs docs: Training class for game controllers. Change-Id: I697770aee8604c965c3730691459c1e8f10705da