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

components/policy/core/common/policy_test_utils.cc

 // Copyright 2013 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 "components/policy/core/common/policy_test_utils.h"
 
 #include <string>
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
@@ skipping 204 matching lines @@
   for (policy::PolicyMap::const_iterator iter = policies.begin();
        iter != policies.end(); ++iter) {
     os << "  \"" << iter->first << "\": " << iter->second << "," << std::endl;
   }
   os << "}";
   return os;
 }
 
 std::ostream& operator<<(std::ostream& os, const policy::PolicyMap::Entry& e) {
   std::string value;
-  base::JSONWriter::WriteWithOptions(e.value,
-                                     base::JSONWriter::OPTIONS_PRETTY_PRINT,
-                                     &value);
+  base::JSONWriter::WriteWithOptions(
+      *e.value, base::JSONWriter::OPTIONS_PRETTY_PRINT, &value);
   os << "{" << std::endl
      << "  \"level\": " << e.level << "," << std::endl
      << "  \"scope\": " << e.scope << "," << std::endl
      << "  \"value\": " << value
      << "}";
   return os;
 }
 
 std::ostream& operator<<(std::ostream& os, const policy::PolicyNamespace& ns) {
   os << ns.domain << "/" << ns.component_id;
   return os;
 }