Use 1077efec-c0b2-4d02-ace3-3c1e52e2fb4b instead of 58147ec8-0423-4659-92e6-f52c5ce8c3cc, as is specified in W3C. https://www.w3.org/TR/eme-initdata-cenc/#common-system-definition
Created attachment 327554 [details] Patch
Comment on attachment 327554 [details] Patch Clearing flags on attachment: 327554 Committed r225164: <https://trac.webkit.org/changeset/225164>
All reviewed patches have been landed. Closing bug.