Change for HAL's committee's feedback from http://ag/21528528

@VintfStability

union DestinationBuffer {

    /**

     * If type == SHARED_MEMORY, the descrambled data must be written

     * If the buffer is SharedBuffer, the descrambled data must be written

     * to user-space non-secure shared memory.

     */

    SharedBuffer nonsecureMemory;

    /**

     * If type == NATIVE_HANDLE, the descrambled data must be written

     * If the buffer is presented by NativeHandle, the descrambled data must be written

     * to secure memory referenced by the vendor's buffer allocator.

     */

    NativeHandle secureMemory;