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diff --git a/src/core/ozone/gl_surface_egl_qt.h b/src/core/ozone/gl_surface_egl_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.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef GL_SURFACE_EGL_QT_H_
+#define GL_SURFACE_EGL_QT_H_
+
+#include "gl_surface_qt.h"
+#include <EGL/egl.h>
+#include <EGL/eglext.h>
+
+namespace gl {
+
+class GLSurfaceEGLQt: public GLSurfaceQt {
+public:
+    explicit GLSurfaceEGLQt(const gfx::Size& size);
+
+    static bool InitializeOneOff();
+    static bool InitializeExtensionSettingsOneOff();
+
+    bool Initialize(GLSurfaceFormat format) override;
+    void Destroy() override;
+    void* GetHandle() override;
+    bool Resize(const gfx::Size& size, float scale_factor,
+                ColorSpace color_space, bool has_alpha) override;
+
+protected:
+    ~GLSurfaceEGLQt();
+
+public:
+   static bool g_egl_surfaceless_context_supported;
+
+private:
+   EGLSurface m_surfaceBuffer;
+   static bool s_initialized;
+   DISALLOW_COPY_AND_ASSIGN(GLSurfaceEGLQt);
+};
+
+// The following comment is cited from chromium/ui/gl/gl_surface_egl.cc:
+// SurfacelessEGL is used as Offscreen surface when platform supports
+// KHR_surfaceless_context and GL_OES_surfaceless_context. This would avoid the
+// need to create a dummy EGLsurface in case we render to client API targets.
+
+class GLSurfacelessQtEGL : public GLSurfaceQt {
+public:
+    explicit GLSurfacelessQtEGL(const gfx::Size& size);
+
+public:
+    bool Initialize(GLSurfaceFormat format) override;
+    void Destroy() override;
+    bool IsSurfaceless() const override;
+    bool Resize(const gfx::Size& size, float scale_factor,
+                ColorSpace color_space, bool has_alpha) override;
+    EGLSurface GetHandle() override;
+    void* GetShareHandle() override;
+
+private:
+    DISALLOW_COPY_AND_ASSIGN(GLSurfacelessQtEGL);
+};
+}
+
+#endif