Convert //extensions/browser from scoped_ptr to std::unique_ptr

extensions/browser/updater/update_service.h

 // 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.
 
 #ifndef EXTENSIONS_BROWSER_UPDATER_UPDATE_SERVICE_H_
 #define EXTENSIONS_BROWSER_UPDATER_UPDATE_SERVICE_H_
 
+#include <memory>
 #include <string>
 #include <vector>
 
 #include "base/callback.h"
 #include "base/macros.h"
-#include "base/memory/scoped_ptr.h"
 #include "components/keyed_service/core/keyed_service.h"
 
 namespace base {
 class Version;
 }
 
 namespace content {
 class BrowserContext;
 }
 
@@ skipping 37 matching lines @@
 
   scoped_refptr<update_client::UpdateClient> update_client_;
   scoped_refptr<UpdateDataProvider> update_data_provider_;
 
   DISALLOW_COPY_AND_ASSIGN(UpdateService);
 };
 
 }  // namespace extensions
 
 #endif  // EXTENSIONS_BROWSER_UPDATER_UPDATE_SERVICE_H_