Clone of chromium aad1ce808763f59c7a3753e08f1500a104ecc6fd refs/remotes/origin/HEAD
diff --git a/base/debug/alias.h b/base/debug/alias.h
new file mode 100644
index 0000000..3b2ab64
--- /dev/null
+++ b/base/debug/alias.h
@@ -0,0 +1,21 @@
+// Copyright (c) 2011 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef BASE_DEBUG_ALIAS_H_
+#define BASE_DEBUG_ALIAS_H_
+
+#include "base/base_export.h"
+
+namespace base {
+namespace debug {
+
+// Make the optimizer think that var is aliased. This is to prevent it from
+// optimizing out variables that that would not otherwise be live at the point
+// of a potential crash.
+void BASE_EXPORT Alias(const void* var);
+
+} // namespace debug
+} // namespace base
+
+#endif // BASE_DEBUG_ALIAS_H_
