am 186b3eae: Make the backup manager do nothing when backup is turned off.

Merge commit '186b3eaedd058baa9dfbfe17a3c3fc2b5fa44e3e'

* commit '186b3eaedd058baa9dfbfe17a3c3fc2b5fa44e3e':
  Make the backup manager do nothing when backup is turned off.