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

components/history/core/browser/delete_directive_handler.cc

 // Copyright (c) 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/history/core/browser/delete_directive_handler.h"
 
 #include "base/json/json_writer.h"
 #include "base/rand_util.h"
 #include "base/time/time.h"
 #include "base/values.h"
@@ skipping 14 matching lines @@
   for (size_t i = 0; i < length; ++i)
     result.push_back(static_cast<char>(base::RandInt(kMin, kMax)));
   return result;
 }
 
 std::string DeleteDirectiveToString(
     const sync_pb::HistoryDeleteDirectiveSpecifics& delete_directive) {
   scoped_ptr<base::DictionaryValue> value(
       syncer::HistoryDeleteDirectiveSpecificsToValue(delete_directive));
   std::string str;
-  base::JSONWriter::Write(value.get(), &str);
+  base::JSONWriter::Write(*value, &str);
   return str;
 }
 
 // Compare time range directives first by start time, then by end time.
 bool TimeRangeLessThan(const syncer::SyncData& data1,
                        const syncer::SyncData& data2) {
   const sync_pb::TimeRangeDirective& range1 =
       data1.GetSpecifics().history_delete_directive().time_range_directive();
   const sync_pb::TimeRangeDirective& range2 =
       data2.GetSpecifics().history_delete_directive().time_range_directive();
@@ skipping 377 matching lines @@
     syncer::SyncChangeList change_list;
     for (size_t i = 0; i < delete_directives.size(); ++i) {
       change_list.push_back(syncer::SyncChange(
           FROM_HERE, syncer::SyncChange::ACTION_DELETE, delete_directives[i]));
     }
     sync_processor_->ProcessSyncChanges(FROM_HERE, change_list);
   }
 }
 
 }  // namespace history