Ozone integration.

ui/ozone/platform/drm/gpu/gbm_device.cc

+// Copyright 2015 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/platform/drm/gpu/gbm_device.h"
+
+#include <gbm.h>
+
+namespace ui {
+
+GbmDevice::GbmDevice(const base::FilePath& device_path, base::File file)
+    : DrmDevice(device_path, file.Pass()) {
+}
+
+GbmDevice::~GbmDevice() {
+  if (device_)
+    gbm_device_destroy(device_);
+}
+
+bool GbmDevice::Initialize(bool use_atomic) {
+  if (!DrmDevice::Initialize(use_atomic))
+    return false;
+
+  device_ = gbm_create_device(get_fd());
+  if (!device_) {
+    PLOG(ERROR) << "Unable to initialize GBM for " << device_path().value();
+    return false;
+  }
+
+  return true;
+}
+
+}  // namespace ui