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

chrome/browser/extensions/api/storage/settings_apitest.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/bind.h"
 #include "base/json/json_writer.h"
 #include "base/memory/ref_counted.h"
 #include "base/run_loop.h"
 #include "base/values.h"
 #include "chrome/browser/extensions/api/storage/settings_sync_util.h"
@@ skipping 156 matching lines @@
         CreateMessage(settings_namespace, normal_action, is_final_action));
     listener_incognito.Reply(
         CreateMessage(settings_namespace, incognito_action, is_final_action));
     return extension;
   }
 
   std::string CreateMessage(
       Namespace settings_namespace,
       const std::string& action,
       bool is_final_action) {
-    scoped_ptr<base::DictionaryValue> message(new base::DictionaryValue());
-    message->SetString("namespace", ToString(settings_namespace));
-    message->SetString("action", action);
-    message->SetBoolean("isFinalAction", is_final_action);
+    base::DictionaryValue message;
+    message.SetString("namespace", ToString(settings_namespace));
+    message.SetString("action", action);
+    message.SetBoolean("isFinalAction", is_final_action);
     std::string message_json;
-    base::JSONWriter::Write(message.get(), &message_json);
+    base::JSONWriter::Write(message, &message_json);
     return message_json;
   }
 
   void InitSyncWithSyncableService(
       syncer::SyncChangeProcessor* sync_processor,
       syncer::SyncableService* settings_service) {
     EXPECT_FALSE(
         settings_service->MergeDataAndStartSyncing(
                               kModelType,
                               syncer::SyncDataList(),
@@ skipping 379 matching lines @@
   // ENABLE_CONFIGURATION_POLICY is not defined.
   StorageFrontend* frontend = StorageFrontend::Get(browser()->profile());
   frontend->DisableStorageForTesting(MANAGED);
   EXPECT_FALSE(frontend->IsStorageEnabled(MANAGED));
   // Now run the extension.
   ASSERT_TRUE(RunExtensionTest("settings/managed_storage_disabled"))
       << message_;
 }
 
 }  // namespace extensions