While the core of MediaStream API is being implemented, it is not implemented in EFL port. As of now, the latest spec link is here: http://dev.w3.org/2011/webrtc/editor/webrtc.html
Closing this bug because the EFL port has been removed from trunk. If you feel this bug applies to a different upstream WebKit port and was closed in error, please either update the title and reopen the bug, or leave a comment to request this.