Convert JsonWriter::Write to taking a const ref for the in-param

base/values.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/values.h"
 
 #include <string.h>
 
 #include <algorithm>
 #include <cmath>
@@ skipping 1150 matching lines @@
 }
 
 ValueSerializer::~ValueSerializer() {
 }
 
 ValueDeserializer::~ValueDeserializer() {
 }
 
 std::ostream& operator<<(std::ostream& out, const Value& value) {
   std::string json;
-  JSONWriter::WriteWithOptions(&value,
-                               JSONWriter::OPTIONS_PRETTY_PRINT,
-                               &json);
+  JSONWriter::WriteWithOptions(value, JSONWriter::OPTIONS_PRETTY_PRINT, &json);
   return out << json;
 }
 
 }  // namespace base