am 2a6bf82e: am 533149d5: am fe3e71be: Merge "Update ExoPlayer developer guide." into lmp-docs automerge: a40eb5d automerge: 1289d52
automerge: 6a71e81

* commit '6a71e814a3207fbe2cffe0650a1c37688f2aa62e':
  Update ExoPlayer developer guide.