Geoff Chappell, Software Analyst
The public symbol file NTKRPAMP.PDB for the original release of Windows 10 tells that the kernel is built with the ETW_X.H header at
and draws from it the following type definition:
|347||enum _TRACE_INFORMATION_CLASS||line 31617 in WDM.H
line 15998 in NTOSP.H
The header ETW_X.H is not known in any Device Driver Kit (DDK) or Windows Driver Kit (WDK).