am bf0ea148: Shave about 1500 milliseconds off the time it takes to restore a large playlist, with corresponding reduction in music playback service startup time.

Merge commit 'bf0ea148eefcffd43e6f5023a6f8365d74fb829f'

* commit 'bf0ea148eefcffd43e6f5023a6f8365d74fb829f':
  Shave about 1500 milliseconds off the time it takes to restore a large playlist,