Merge "Resolve feedback from API review"

            kOfflineLicenseStateUnknown,

            // Offline license state is usable, the keys may be used for decryption.

            kOfflineLicenseStateUsable,

            // Offline license state is inactive, the keys have been marked for

            // Offline license state is released, the keys have been marked for

            // release using getKeyRequest() with kKeyType_Release but the

            // key response has not been received.

            kOfflineLicenseStateInactive

            kOfflineLicenseStateReleased

        };

        DrmPlugin() {}