urlmon: Use file content to verify MIME type reported by file protocol handler

[Jacek Caban]

On 06/06/12 13:58, Marvin wrote:
> Hi,
>
> While running your changed tests on Windows, I think I found new failures.
> Being a bot and all I'm not very good at pattern recognition, so I might be
> wrong, but could you please double-check?
> Full results can be found at
> http://testbot.winehq.org/JobDetails.pl?Key=18815
>
> Your paranoid android.
>
>
> === WXPPROSP3 (32 bit protocol) ===
> protocol.c:1046: Test failed: unexpected call ReportResult
> protocol.c:1051: Test failed: hrResult = 00000000, expected: 80004004
> protocol.c:2838: Test failed: Read failed: 00000001

This is unrelated to my patch.

Jacek