[1] Web Applications 1.0 r7824 Move FileCallback into the spec rather than referencing File System API just for that. ( ( 版)) <http://html5.org/tools/web-apps-tracker?from=7823&to=7824>
[2] Rename FileCallback to BlobCallback (used by canvas.toBlob()) · whatwg/html@6c334ac ( 版) <https://github.com/whatwg/html/commit/6c334ac29cfe698fed5b5281dda4ff34c39112b9>