Implement the Encrypted Media Extensions as defined at http://dvcs.w3.org/hg/html-media/raw-file/tip/encrypted-media/encrypted-media.html. This is an umbrella bug for the overall feature. Individual patches will be dependencies.
Please send an e-mail to webkit-dev announcing this feature. We need to give everyone a chance to discuss whether this is something we needs, as well as implementation strategy.
Sent: https://lists.webkit.org/pipermail/webkit-dev/2012-April/020174.html
For some definition of implemented, this has been done. This particular bug arc is now out of date, being based on old versions of the spec.