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diff --git a/src/core/chromium_gpu_helper.h b/src/core/chromium_gpu_helper.h
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+/****************************************************************************
+**
+** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).
+** Contact: http://www.qt-project.org/legal
+**
+** 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 Digia.  For licensing terms and
+** conditions see http://qt.digia.com/licensing.  For further information
+** use the contact form at http://qt.digia.com/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 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Digia gives you certain additional
+** rights.  These rights are described in the Digia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef CHROMIUM_GPU_HELPER_H
+#define CHROMIUM_GPU_HELPER_H
+
+#include "base/callback.h"
+
+namespace base {
+class MessageLoop;
+}
+
+namespace content {
+class SyncPointManager;
+}
+
+namespace gpu {
+namespace gles2 {
+class MailboxManager;
+class MailboxName;
+class Texture;
+}
+}
+
+// These functions wrap code that needs to include headers that are
+// incompatible with Qt GL headers.
+// From the outside, types from incompatible headers referenced in these
+// functions should only be forward-declared and considered as opaque types.
+
+base::MessageLoop *gpu_message_loop();
+content::SyncPointManager *sync_point_manager();
+gpu::gles2::MailboxManager *mailbox_manager();
+
+void AddSyncPointCallbackOnGpuThread(base::MessageLoop *gpuMessageLoop, content::SyncPointManager *syncPointManager, uint32 sync_point, const base::Closure& callback);
+gpu::gles2::Texture* ConsumeTexture(gpu::gles2::MailboxManager *mailboxManager, unsigned target, const gpu::gles2::MailboxName& name);
+unsigned int service_id(gpu::gles2::Texture *tex);
+
+#endif // CHROMIUM_GPU_HELPER_H