Remove base::Value::CreateNullValue

components/dom_distiller/ios/distiller_page_ios.mm

Index: components/dom_distiller/ios/distiller_page_ios.mm
diff --git a/components/dom_distiller/ios/distiller_page_ios.mm b/components/dom_distiller/ios/distiller_page_ios.mm
index 04bfd9008bd156e9a5da91b44d6b29d20567d9a3..1b19a6fde56ef03b386c00a630ba826fabe2e687 100644
--- a/components/dom_distiller/ios/distiller_page_ios.mm
+++ b/components/dom_distiller/ios/distiller_page_ios.mm
@@ -66,7 +66,7 @@ std::unique_ptr<base::Value> ValueResultFromScriptResult(id wk_result,
     result.reset(new base::Value(static_cast<bool>([wk_result boolValue])));
     DCHECK(result->IsType(base::Value::Type::BOOLEAN));
   } else if (result_type == CFNullGetTypeID()) {
-    result = base::Value::CreateNullValue();
+    result = base::MakeUnique<base::Value>();
     DCHECK(result->IsType(base::Value::Type::NONE));
   } else if (result_type == CFDictionaryGetTypeID()) {
     std::unique_ptr<base::DictionaryValue> dictionary =
@@ -232,7 +232,7 @@ void DistillerPageIOS::OnLoadURLDone(
 }
 
 void DistillerPageIOS::HandleJavaScriptResult(id result) {
-  std::unique_ptr<base::Value> resultValue = base::Value::CreateNullValue();
+  auto resultValue = base::MakeUnique<base::Value>();
   if (result) {
     resultValue = ValueResultFromScriptResult(result);
   }