Remove ScopedVector from ios/.

ios/chrome/browser/ui/webui/sync_internals/sync_internals_ui.cc

 // Copyright 2015 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 "ios/chrome/browser/ui/webui/sync_internals/sync_internals_ui.h"
 
+#include "base/memory/ptr_util.h"
 #include "components/grit/components_resources.h"
 #include "components/sync/driver/about_sync_util.h"
 #include "ios/chrome/browser/browser_state/chrome_browser_state.h"
 #include "ios/chrome/browser/chrome_url_constants.h"
 #include "ios/chrome/browser/ui/webui/sync_internals/sync_internals_message_handler.h"
 #include "ios/web/public/web_ui_ios_data_source.h"
 #include "ios/web/public/webui/web_ui_ios.h"
 
 namespace {
 
@@ skipping 25 matching lines @@
   source->SetDefaultResource(IDR_SYNC_DRIVER_SYNC_INTERNALS_INDEX_HTML);
   return source;
 }
 
 }  // namespace
 
 SyncInternalsUI::SyncInternalsUI(web::WebUIIOS* web_ui)
     : web::WebUIIOSController(web_ui) {
   web::WebUIIOSDataSource::Add(ios::ChromeBrowserState::FromWebUIIOS(web_ui),
                                CreateSyncInternalsHTMLSource());
-  web_ui->AddMessageHandler(new SyncInternalsMessageHandler);
+  web_ui->AddMessageHandler(base::MakeUnique<SyncInternalsMessageHandler>());
 }
 
 SyncInternalsUI::~SyncInternalsUI() {}