Remove base::Value::CreateNullValue

base/json/json_writer_unittest.cc

 // Copyright (c) 2012 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.
 
 #include "base/json/json_writer.h"
 
 #include "base/memory/ptr_util.h"
 #include "base/values.h"
 #include "build/build_config.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace base {
 
 TEST(JSONWriterTest, BasicTypes) {
   std::string output_js;
 
   // Test null.
-  EXPECT_TRUE(JSONWriter::Write(*Value::CreateNullValue(), &output_js));
+  EXPECT_TRUE(JSONWriter::Write(Value(), &output_js));
   EXPECT_EQ("null", output_js);
 
   // Test empty dict.
   EXPECT_TRUE(JSONWriter::Write(DictionaryValue(), &output_js));
   EXPECT_EQ("{}", output_js);
 
   // Test empty list.
   EXPECT_TRUE(JSONWriter::Write(ListValue(), &output_js));
   EXPECT_EQ("[]", output_js);
 
@@ skipping 116 matching lines @@
 
   // Test allowing a double with no fractional part to be written as an integer.
   Value double_value(1e10);
   EXPECT_TRUE(JSONWriter::WriteWithOptions(
       double_value, JSONWriter::OPTIONS_OMIT_DOUBLE_TYPE_PRESERVATION,
       &output_js));
   EXPECT_EQ("10000000000", output_js);
 }
 
 }  // namespace base