Add Blob to accepted types for uploads

Add Blob to accepted types for uploads

From https://developer.mozilla.org/en-US/docs/Web/API/File :

A File object is specific kind of a Blob, and can be used in any
context that a Blob can. In particular, FileReader, URL.createObjectURL(),
createImageBitmap(), and XMLHttpRequest.send() accept both Blobs and Files.

Change-Id: I171f884fc4ada6180e5c605a44b27044fc03f26e