Have all trace points emit to ETW.

base/win/event_trace_provider.h

Index: base/win/event_trace_provider.h
diff --git a/base/win/event_trace_provider.h b/base/win/event_trace_provider.h
index 7907347b72451607bba2e026b6550e1f457d0e4e..4107ed3c6845dcf79b67aeb3f7f48918928175f7 100644
--- a/base/win/event_trace_provider.h
+++ b/base/win/event_trace_provider.h
@@ -43,6 +43,14 @@ template <size_t N> class EtwMofEvent: public EtwMofEventBase<N> {
     memset(static_cast<Super*>(this), 0, sizeof(Super));
   }
 
+  EtwMofEvent(const EtwEventClass& event_class, EtwEventLevel level) {
+    memset(static_cast<Super*>(this), 0, sizeof(Super));
+    header.Size = sizeof(Super);
+    header.Guid = event_class;
+    header.Class.Level = level;
+    header.Flags = WNODE_FLAG_TRACED_GUID | WNODE_FLAG_USE_MOF_PTR;
+  }
+
   EtwMofEvent(const EtwEventClass& event_class, EtwEventType type,
               EtwEventLevel level) {
     memset(static_cast<Super*>(this), 0, sizeof(Super));
@@ -64,6 +72,10 @@ template <size_t N> class EtwMofEvent: public EtwMofEventBase<N> {
     header.Flags = WNODE_FLAG_TRACED_GUID | WNODE_FLAG_USE_MOF_PTR;
   }
 
+  void SetType(EtwEventType type) {
+    header.Class.Type = type;
+  }
+
   void SetField(int field, size_t size, const void *data) {
     // DCHECK(field < N);
     if ((field < N) && (size <= kuint32max)) {