[2]
sourceBuffer
[1] Add about:html-kind for use in MP4 and DASH (annevk著, 8/29/2016, 6:57:56 PM) <https://github.com/whatwg/html/commit/56ea222aa35502dc2e8d7a83eb007e7f43559af7>
[3] Use [Exposed=Window] even more (annevk著, 9/6/2017, 8:34:18 AM) <https://github.com/whatwg/html/commit/f2a32c045aa7764533cda58b4452fe2bbc6652a0>
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