Merge "Merge "Merge "Merge "Update samples for new DownloadRequest API" am: 10f4fb6469" into stage-aosp-master am: 936cf912c4" into oc-dev-plus-aosp am: 29e6fa6f11" into oc-dr1-dev-plus-aosp
am: 97985bbd14

Change-Id: I7c76a4016544075f0b7e427d04ab0aa9d9dedd27