Remove raw base::DictionaryValue::Set

ui/app_list/search/history_data_store.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 "ui/app_list/search/history_data_store.h"
 
 #include <stddef.h>
 #include <stdint.h>
 
 #include <utility>
@@ skipping 110 matching lines @@
     : data_store_(data_store) {
   Init(data_store_->cached_dict());
 }
 
 HistoryDataStore::~HistoryDataStore() {
 }
 
 void HistoryDataStore::Init(base::DictionaryValue* cached_dict) {
   DCHECK(cached_dict);
   cached_dict->SetString(kKeyVersion, kCurrentVersion);
-  cached_dict->Set(kKeyAssociations, new base::DictionaryValue);
+  cached_dict->Set(kKeyAssociations, base::MakeUnique<base::DictionaryValue>());
 }
 
 void HistoryDataStore::Flush(
     DictionaryDataStore::OnFlushedCallback on_flushed) {
   if (data_store_)
     data_store_->Flush(std::move(on_flushed));
   else
     std::move(on_flushed).Run();
 }
 
@@ skipping 74 matching lines @@
     OnLoadedCallback callback,
     std::unique_ptr<base::DictionaryValue> dict) {
   if (!dict) {
     callback.Run(nullptr);
   } else {
     callback.Run(Parse(std::move(dict)));
   }
 }
 
 }  // namespace app_list