Merge commit '550206226b59ff116cc677121c82aa61eac966bc' * commit '550206226b59ff116cc677121c82aa61eac966bc': Un-@hide new download manager public API.
Merge commit '550206226b59ff116cc677121c82aa61eac966bc' * commit '550206226b59ff116cc677121c82aa61eac966bc': Un-@hide new download manager public API.