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-rw-r--r--base/event_trace_controller_win.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/base/event_trace_controller_win.h b/base/event_trace_controller_win.h
index 5267c86..5f66b97 100644
--- a/base/event_trace_controller_win.h
+++ b/base/event_trace_controller_win.h
@@ -19,6 +19,7 @@
// as well as potentially from multiple binary trace files.
#ifndef BASE_EVENT_TRACE_CONTROLLER_WIN_H_
#define BASE_EVENT_TRACE_CONTROLLER_WIN_H_
+#pragma once
#include <windows.h>
#include <wmistr.h>