Safari 10.1 and requestMediaKeySystemAccess

Hi all,

OS : macOS 10.12.4 and 10.12.5

browser: Safari 10.1.

I observed since Safari 10,1 that the function "requestMediaKeySystemAccess" from EME is not more available.

If I type "navigator.requestMediaKeySystemAccess() in the console, I got this error :

TypeError: requestMediaKeySystemAccess is not a function.

Is it normal ?

Thank you

Sebastien