Remove base::Value::CreateNullValue

content/browser/gpu/gpu_internals_ui.cc

Index: content/browser/gpu/gpu_internals_ui.cc
diff --git a/content/browser/gpu/gpu_internals_ui.cc b/content/browser/gpu/gpu_internals_ui.cc
index 10a95170def094c68ad117daac1ff50e10adbb27..da9bf2eeb9f281ec342dc5b0b52b4a177fdbf5ce 100644
--- a/content/browser/gpu/gpu_internals_ui.cc
+++ b/content/browser/gpu/gpu_internals_ui.cc
@@ -247,7 +247,7 @@ base::DictionaryValue* GpuInfoAsDictionaryValue() {
   info->Set("basic_info", basic_info);
 
 #if defined(OS_WIN)
-  std::unique_ptr<base::Value> dx_info = base::Value::CreateNullValue();
+  auto dx_info = base::MakeUnique<base::Value>();
   if (gpu_info.dx_diagnostics.children.size())
     dx_info.reset(DxDiagNodeToList(gpu_info.dx_diagnostics));
   info->Set("diagnostics", std::move(dx_info));