Task #4143: tracking: file.data improvements
file.data: inspect File objects for HTTP
file.data for HTTP currently inspects the HtpBody instead of File(s). These will usually contain the same data, except for the multipart case.
Switching to File(s) would make the implementation simpler and make the implementation more correct.
David Wharton and Jae Williams have offered to run test runs for their rule collections to validate that this change won't break anything.