NSURL::NSURLSession_DownloadTaskWithURL_WithCancelResume is failing intermittently

[pradipd]

I see 2 different failures.
Sometimes we get:
File download should be in progress! Expected: (currentBytesDownloaded) > (lastBytesDownloaded), actual: 1.91231 vs 1.91231

Other times it is:
File download should have stopped! Value of: lastBytesDownloaded Actual: 1.47247 Expected: currentBytesDownloaded Which is: 1.47385

Also, we have only seen this on win32 release.