Implemented kernel32.GetIoProcessCounters and stubbed
ntdll.NtQueryProcessInformation(ProcessIoCounters).

include/winnt.h

diff --git a/include/winnt.h b/include/winnt.h
index 4102b89..6dba3e2 100644
--- a/include/winnt.h
+++ b/include/winnt.h
@@ -3600,4 +3600,14 @@
 
 typedef VOID (NTAPI * WAITORTIMERCALLBACKFUNC) (PVOID, BOOLEAN );
 
+typedef struct _IO_COUNTERS {
+    ULONGLONG   ReadOperationCount;
+    ULONGLONG   WriteOperationCount;
+    ULONGLONG   OtherOperationCount;
+    ULONGLONG   ReadTransferCount;
+    ULONGLONG   WriteTransferCount;
+    ULONGLONG   OtherTransferCount;
+} IO_COUNTERS;
+typedef IO_COUNTERS *PIO_COUNTERS;
+
 #endif  /* __WINE_WINNT_H */