Android 3-rd party source code

I think you know that Android has 3-rd party Java API.
For example it is Apache API in part of HttpClient 4.x.
That is good code.
But today I found out that Google didn't port HttpMime project from Apache.
Such API allows to send 'multipart/form-data' body content to the target server by HTTP POST request, for example.
Of course HttpMime project has a few external dependencies like mime4j.
But if I understand correctly all these dependencies concerned to Apache projects.

I would rather do it in the next platform releases.