Remove ScopedVector from ios/.

ios/chrome/browser/ui/webui/version_ui.mm

 // 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/version_ui.h"
 
 #include "base/command_line.h"
+#include "base/memory/ptr_util.h"
 #include "base/strings/string_number_conversions.h"
 #include "base/strings/stringprintf.h"
 #include "build/build_config.h"
 #include "components/grit/components_resources.h"
 #include "components/strings/grit/components_chromium_strings.h"
 #include "components/strings/grit/components_google_chrome_strings.h"
 #include "components/strings/grit/components_strings.h"
 #include "components/version_info/version_info.h"
 #include "components/version_ui/version_ui_constants.h"
 #include "ios/chrome/browser/browser_state/chrome_browser_state.h"
@@ skipping 83 matching lines @@
   html_source->AddResourcePath(version_ui::kVersionJS, IDR_VERSION_UI_JS);
   html_source->AddResourcePath(version_ui::kAboutVersionCSS,
                                IDR_VERSION_UI_CSS);
   html_source->SetDefaultResource(IDR_VERSION_UI_HTML);
   return html_source;
 }
 
 }  // namespace
 
 VersionUI::VersionUI(web::WebUIIOS* web_ui) : web::WebUIIOSController(web_ui) {
-  web_ui->AddMessageHandler(new VersionHandler());
+  web_ui->AddMessageHandler(base::MakeUnique<VersionHandler>());
   web::WebUIIOSDataSource::Add(ios::ChromeBrowserState::FromWebUIIOS(web_ui),
                                CreateVersionUIDataSource());
 }
 
 VersionUI::~VersionUI() {}