#import <FileAPI/Blob.idl> [Exposed=(Window,Worker), Serializable, UseNewAKString] interface File : Blob { constructor(sequence<BlobPart> fileBits, USVString fileName, optional FilePropertyBag options = {}); readonly attribute DOMString name; readonly attribute long long lastModified; }; dictionary FilePropertyBag : BlobPropertyBag { long long lastModified; };