Merge commit '47b46648b5a9b8c518b96db37618fc49c5e5f2d1' * commit '47b46648b5a9b8c518b96db37618fc49c5e5f2d1': Initial implementation of the download manager public API.
Merge commit '47b46648b5a9b8c518b96db37618fc49c5e5f2d1' * commit '47b46648b5a9b8c518b96db37618fc49c5e5f2d1': Initial implementation of the download manager public API.