am bb0d23b5: Have DownloadManager pass file URIs for legacy external downloads

Merge commit 'bb0d23b5475cb516fa6f61ee3fe4e7b79cd980f8' into gingerbread-plus-aosp

* commit 'bb0d23b5475cb516fa6f61ee3fe4e7b79cd980f8':
  Have DownloadManager pass file URIs for legacy external downloads