Remove raw base::DictionaryValue::Set in //extensions

extensions/browser/api/app_runtime/app_runtime_api.cc

 // Copyright 2014 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 "extensions/browser/api/app_runtime/app_runtime_api.h"
 
 #include <stddef.h>
 
 #include <utility>
 
@@ skipping 173 matching lines @@
     // TODO: The launch item type should be documented in the idl so that this
     // entire function can be strongly typed and built using an
     // app_runtime::LaunchData instance.
     launch_item->SetString("fileSystemId", file_entries[i].filesystem_id);
     launch_item->SetString("baseName", file_entries[i].registered_name);
     launch_item->SetString("mimeType", entries[i].mime_type);
     launch_item->SetString("entryId", file_entries[i].id);
     launch_item->SetBoolean("isDirectory", entries[i].is_directory);
     items->Append(std::move(launch_item));
   }
-  launch_data->Set("items", items.release());
+  launch_data->Set("items", std::move(items));
   DispatchOnLaunchedEventImpl(extension->id(), source_enum,
                               std::move(launch_data), context);
 }
 
 // static
 void AppRuntimeEventRouter::DispatchOnLaunchedEventWithUrl(
     BrowserContext* context,
     const Extension* extension,
     const std::string& handler_id,
     const GURL& url,
     const GURL& referrer_url) {
   app_runtime::LaunchData launch_data;
   app_runtime::LaunchSource source_enum =
       app_runtime::LAUNCH_SOURCE_URL_HANDLER;
   launch_data.id.reset(new std::string(handler_id));
   launch_data.url.reset(new std::string(url.spec()));
   launch_data.referrer_url.reset(new std::string(referrer_url.spec()));
   if (extensions::FeatureSwitch::trace_app_source()->IsEnabled()) {
     launch_data.source = source_enum;
   }
   DispatchOnLaunchedEventImpl(extension->id(), source_enum,
                               launch_data.ToValue(), context);
 }
 
 }  // namespace extensions