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

sync/api/sync_data.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 "sync/api/sync_data.h"
 
 #include <ostream>
 
 #include "base/json/json_writer.h"
 #include "base/memory/scoped_ptr.h"
@@ skipping 137 matching lines @@
 }
 
 bool SyncData::IsLocal() const { return id_ == kInvalidId; }
 
 std::string SyncData::ToString() const {
   if (!IsValid())
     return "<Invalid SyncData>";
 
   std::string type = ModelTypeToString(GetDataType());
   std::string specifics;
-  scoped_ptr<base::DictionaryValue> value(
-      EntitySpecificsToValue(GetSpecifics()));
-  base::JSONWriter::WriteWithOptions(
-      value.get(), base::JSONWriter::OPTIONS_PRETTY_PRINT, &specifics);
+  base::JSONWriter::WriteWithOptions(*EntitySpecificsToValue(GetSpecifics()),
+                                     base::JSONWriter::OPTIONS_PRETTY_PRINT,
+                                     &specifics);
 
   if (IsLocal()) {
     SyncDataLocal sync_data_local(*this);
     return "{ isLocal: true, type: " + type + ", tag: " +
            sync_data_local.GetTag() + ", title: " + GetTitle() +
            ", specifics: " + specifics + "}";
   }
 
   SyncDataRemote sync_data_remote(*this);
   std::string id = base::Int64ToString(sync_data_remote.GetId());
@@ skipping 40 matching lines @@
   return id_;
 }
 
 void SyncDataRemote::GetOrDownloadAttachments(
     const AttachmentIdList& attachment_ids,
     const AttachmentService::GetOrDownloadCallback& callback) {
   attachment_service_.GetOrDownloadAttachments(attachment_ids, callback);
 }
 
 }  // namespace syncer