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diff --git a/src/core/extensions/extension_system_factory_qt.cpp b/src/core/extensions/extension_system_factory_qt.cpp
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+++ b/src/core/extensions/extension_system_factory_qt.cpp
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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.
+
+#include "extension_system_factory_qt.h"
+
+#include "components/keyed_service/content/browser_context_dependency_manager.h"
+#include "extensions/browser/declarative_user_script_manager_factory.h"
+#include "extensions/browser/event_router_factory.h"
+#include "extensions/browser/extension_prefs_factory.h"
+#include "extensions/browser/extension_registry_factory.h"
+#include "extensions/browser/extension_system.h"
+#include "extensions/browser/extensions_browser_client.h"
+#include "extensions/browser/process_manager_factory.h"
+#include "extensions/browser/renderer_startup_helper.h"
+
+namespace extensions {
+
+// static
+ExtensionSystem *ExtensionSystemFactoryQt::GetForBrowserContext(content::BrowserContext *context)
+{
+    return static_cast<ExtensionSystem *>(GetInstance()->GetServiceForBrowserContext(context, true));
+}
+
+// static
+ExtensionSystemFactoryQt *ExtensionSystemFactoryQt::GetInstance()
+{
+    return base::Singleton<ExtensionSystemFactoryQt>::get();
+}
+
+ExtensionSystemFactoryQt::ExtensionSystemFactoryQt()
+        : ExtensionSystemProvider("ExtensionSystem", BrowserContextDependencyManager::GetInstance())
+{
+    DCHECK(ExtensionsBrowserClient::Get()) << "ExtensionSystemFactory must be initialized after BrowserProcess";
+    DependsOn(ExtensionPrefsFactory::GetInstance());
+    DependsOn(ExtensionRegistryFactory::GetInstance());
+}
+
+ExtensionSystemFactoryQt::~ExtensionSystemFactoryQt()
+{
+}
+
+KeyedService *ExtensionSystemFactoryQt::BuildServiceInstanceFor(content::BrowserContext *context) const
+{
+    return new ExtensionSystemQt(context);
+}
+
+content::BrowserContext *ExtensionSystemFactoryQt::GetBrowserContextToUse(content::BrowserContext *context) const
+{
+    // Separate instance in incognito.
+    return context;
+}
+
+bool ExtensionSystemFactoryQt::ServiceIsCreatedWithBrowserContext() const
+{
+    return true;
+}
+
+} // namespace extensions