Convert Ozone GL OSMesa implementation.

ui/ozone/common/gl_ozone_osmesa.cc

+// 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.
+
+#include "ui/ozone/common/gl_ozone_osmesa.h"
+
+#include "ui/gl/gl_bindings.h"
+#include "ui/gl/gl_context.h"
+#include "ui/gl/gl_context_osmesa.h"
+#include "ui/gl/gl_gl_api_implementation.h"
+#include "ui/gl/gl_implementation_osmesa.h"
+#include "ui/gl/gl_osmesa_api_implementation.h"
+#include "ui/gl/gl_share_group.h"
+#include "ui/gl/gl_surface.h"
+#include "ui/gl/gl_surface_format.h"
+#include "ui/gl/gl_surface_osmesa.h"
+
+namespace ui {
+
+GLOzoneOSMesa::GLOzoneOSMesa() {}
+
+GLOzoneOSMesa::~GLOzoneOSMesa() {}
+
+bool GLOzoneOSMesa::InitializeGLOneOffPlatform() {
+  return true;
+}
+
+bool GLOzoneOSMesa::InitializeStaticGLBindings(
+    gl::GLImplementation implementation) {
+  return gl::InitializeStaticGLBindingsOSMesaGL();
+}
+
+void GLOzoneOSMesa::InitializeDebugGLBindings() {
+  gl::InitializeDebugGLBindingsGL();
+  gl::InitializeDebugGLBindingsOSMESA();
+}
+
+void GLOzoneOSMesa::ShutdownGL() {
+  gl::ClearBindingsGL();
+  gl::ClearBindingsOSMESA();
+}
+
+bool GLOzoneOSMesa::GetGLWindowSystemBindingInfo(
+    gl::GLWindowSystemBindingInfo* info) {
+  return false;
+}
+
+scoped_refptr<gl::GLContext> GLOzoneOSMesa::CreateGLContext(
+    gl::GLShareGroup* share_group,
+    gl::GLSurface* compatible_surface,
+    const gl::GLContextAttribs& attribs) {
+  return gl::InitializeGLContext(new gl::GLContextOSMesa(share_group),
+                                 compatible_surface, attribs);
+}
+
+scoped_refptr<gl::GLSurface> GLOzoneOSMesa::CreateViewGLSurface(
+    gfx::AcceleratedWidget window) {
+  return gl::InitializeGLSurface(new gl::GLSurfaceOSMesaHeadless());
+}
+
+scoped_refptr<gl::GLSurface> GLOzoneOSMesa::CreateSurfacelessViewGLSurface(
+    gfx::AcceleratedWidget window) {
+  return nullptr;
+}
+
+scoped_refptr<gl::GLSurface> GLOzoneOSMesa::CreateOffscreenGLSurface(
+    const gfx::Size& size) {
+  return gl::InitializeGLSurface(
+      new gl::GLSurfaceOSMesa(gl::GLSurfaceFormat::PIXEL_LAYOUT_BGRA, size));
+}
+
+}  // namespace ui