Revert 247831 "Use the proper name for the app info protobuf to ..."
It seems to be causing sync to fail for the official build on a fresh directory.

> Use the proper name for the app info protobuf to mach the sync server
> 
> BUG=339094
> 
> Review URL: https://codereview.chromium.org/149723003

TBR=petewil@chromium.org

Review URL: https://codereview.chromium.org/153113002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@248568 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 248568