am 05940b2c: Merge "Download manager support for file URIs + last modified time" into gingerbread

Merge commit '05940b2c04041d6b3b8d222f4acfd12faeeb6c9c' into gingerbread-plus-aosp

* commit '05940b2c04041d6b3b8d222f4acfd12faeeb6c9c':
  Download manager support for file URIs + last modified time