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diff --git a/src/core/extensions/extension_system_factory_qt.h b/src/core/extensions/extension_system_factory_qt.h
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+/****************************************************************************
+**
+** Copyright (C) 2018 The Qt Company Ltd.
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of the QtWebEngine module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see https://www.qt.io/terms-conditions. For further
+** information use the contact form at https://www.qt.io/contact-us.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 3 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL3 included in the
+** packaging of this file. Please review the following information to
+** ensure the GNU Lesser General Public License version 3 requirements
+** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 2.0 or (at your option) the GNU General
+** Public license version 3 or any later version approved by the KDE Free
+** Qt Foundation. The licenses are as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
+** included in the packaging of this file. Please review the following
+** information to ensure the GNU General Public License requirements will
+** be met: https://www.gnu.org/licenses/gpl-2.0.html and
+** https://www.gnu.org/licenses/gpl-3.0.html.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+// Copyright (c) 2012 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 EXTENSION_SYSTEM_FACTORY_QT_H_
+#define EXTENSION_SYSTEM_FACTORY_QT_H_
+
+#include "base/macros.h"
+#include "base/memory/singleton.h"
+#include "components/keyed_service/content/browser_context_keyed_service_factory.h"
+#include "extensions/browser/extension_system_provider.h"
+#include "extension_system_qt.h"
+
+namespace extensions {
+class ExtensionSystem;
+
+// BrowserContextKeyedServiceFactory for ExtensionSystemImpl.
+// TODO(yoz): Rename to ExtensionSystemImplFactory.
+class ExtensionSystemFactoryQt : public ExtensionSystemProvider
+{
+public:
+    // ExtensionSystem provider implementation:
+    ExtensionSystem *GetForBrowserContext(content::BrowserContext *context) override;
+
+    static ExtensionSystemFactoryQt *GetInstance();
+
+private:
+    friend struct base::DefaultSingletonTraits<ExtensionSystemFactoryQt>;
+
+    ExtensionSystemFactoryQt();
+    ~ExtensionSystemFactoryQt() override;
+
+    // BrowserContextKeyedServiceFactory implementation:
+    KeyedService *BuildServiceInstanceFor(content::BrowserContext *context) const override;
+    content::BrowserContext *GetBrowserContextToUse(content::BrowserContext *context) const override;
+    bool ServiceIsCreatedWithBrowserContext() const override;
+
+    DISALLOW_COPY_AND_ASSIGN(ExtensionSystemFactoryQt);
+};
+
+} // namespace extensions
+
+#endif // EXTENSION_SYSTEM_FACTORY_QT_H_