Merge "Add clarifying documentation to Context.BIND_EXTERNAL_SERVICE." into nyc-dev am: f45bc095c6 am: ffc715b8f5
am: 4b7f83870b

* commit '4b7f83870be5a0fae07ff7a254b25cf258a24f39':
  Add clarifying documentation to Context.BIND_EXTERNAL_SERVICE.

Change-Id: I3562273285d115aa5b9822a3586b2730c59a1203