Remove base::Value::CreateNullValue

components/policy/core/common/mac_util.cc

Index: components/policy/core/common/mac_util.cc
diff --git a/components/policy/core/common/mac_util.cc b/components/policy/core/common/mac_util.cc
index 04167e00a1e78877a85d70b411e20c210e1f254f..911453d517a402d5555de3146b1862442ee4fc0d 100644
--- a/components/policy/core/common/mac_util.cc
+++ b/components/policy/core/common/mac_util.cc
@@ -8,6 +8,7 @@
 #include <utility>
 
 #include "base/mac/foundation_util.h"
+#include "base/memory/ptr_util.h"
 #include "base/strings/sys_string_conversions.h"
 #include "base/values.h"
 
@@ -46,7 +47,7 @@ void ArrayEntryToValue(const void* value, void* context) {
 
 std::unique_ptr<base::Value> PropertyToValue(CFPropertyListRef property) {
   if (CFCast<CFNullRef>(property))
-    return base::Value::CreateNullValue();
+    return base::MakeUnique<base::Value>();
 
   if (CFBooleanRef boolean = CFCast<CFBooleanRef>(property)) {
     return std::unique_ptr<base::Value>(