am 8449490a: am 4f564cde: Tweaks to download manager API based on API review feedback

Merge commit '8449490a94fb5ab02be2a67d4b57c017d8abd75a'

* commit '8449490a94fb5ab02be2a67d4b57c017d8abd75a':
  Tweaks to download manager API based on API review feedback