[ Merge from http://go/wvgerrit/17429 ] This is to correct for when HDCP validation failure at the OEMCrypto level ends up returning a CryptoException through MediaCrypto with error code Unknown Error (-2998). b/27849488 Change-Id: Ib3a9b1c3a17b9323f3d079a678cf88dedeec3b4b