am a142be8e: (-s ours) am 33b8f417: am 11f03b4b: (-s ours) DO NOT MERGE cherrypick from jb-dev Change-Id: I9579a7eb04cb39d3b457dde390b6b2a7b240a429 docs: android training - Data Storage

* commit 'a142be8ea9003442b486e0a0f8558361b1525c93':
  DO NOT MERGE cherrypick from jb-dev Change-Id: I9579a7eb04cb39d3b457dde390b6b2a7b240a429 docs: android training - Data Storage