Follow-up I9c7aa3b2 (b28c7a8): fix one more validation error

"size" attribute of <input> is not allowed when type is "file".

Change-Id: Id8291d2c2e2ddc3e0c462c0eaa3817634d088c6b
Merge "Follow-up I9c7aa3b2 (b28c7a8): fix one more validation error"