Convert Ozone GL OSMesa implementation.

ui/ozone/common/gl_ozone_osmesa.h

+// Copyright 2017 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 UI_OZONE_COMMON_GL_OZONE_OSMESA_H_
+#define UI_OZONE_COMMON_GL_OZONE_OSMESA_H_
+
+#include "base/macros.h"
+#include "ui/gl/gl_implementation.h"
+#include "ui/ozone/public/gl_ozone.h"
+
+namespace ui {
+
+// GLOzone implementation that uses OSMesa.
+class GLOzoneOSMesa : public GLOzone {
+ public:
+  GLOzoneOSMesa();
+  ~GLOzoneOSMesa() override;
+
+  // GLOzone:
+  bool InitializeGLOneOffPlatform() override;
+  bool InitializeStaticGLBindings(gl::GLImplementation implementation) override;
+  void InitializeDebugGLBindings() override;
+  void ShutdownGL() override;
+  bool GetGLWindowSystemBindingInfo(
+      gl::GLWindowSystemBindingInfo* info) override;
+  scoped_refptr<gl::GLContext> CreateGLContext(
+      gl::GLShareGroup* share_group,
+      gl::GLSurface* compatible_surface,
+      const gl::GLContextAttribs& attribs) override;
+  scoped_refptr<gl::GLSurface> CreateViewGLSurface(
+      gfx::AcceleratedWidget window) override;
+  scoped_refptr<gl::GLSurface> CreateSurfacelessViewGLSurface(
+      gfx::AcceleratedWidget window) override;
+  scoped_refptr<gl::GLSurface> CreateOffscreenGLSurface(
+      const gfx::Size& size) override;
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(GLOzoneOSMesa);
+};
+
+}  // namespace ui
+
+#endif  // UI_OZONE_COMMON_GL_OZONE_OSMESA_H_