Widevine persistent data is stored in /data/mediadrm, HALs are not allowed to access files in /data. Move persistent data to /data/vendor/mediadrm/widevine for older devices, and persistent data will not be saved under /data/vendor. Test: Play Movies & Tv, Netflix bug: 36601695 Change-Id: I31fdd43b7db327bf6d8343dc95e9883ae6bce70d