[Ozone-Dri] Create GbmWrapper

ui/ozone/platform/dri/gbm_wrapper.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/dri/gbm_wrapper.h"
+
+#include <gbm.h>
+
+namespace ui {
+
+GbmWrapper::GbmWrapper(const char* device_path, bool use_sync_flips)
+    : DriWrapper(device_path, use_sync_flips), device_(nullptr) {
+}
+
+GbmWrapper::~GbmWrapper() {
+  if (device_)
+    gbm_device_destroy(device_);
+}
+
+void GbmWrapper::Initialize() {
+  DriWrapper::Initialize();
+  device_ = gbm_create_device(get_fd());
+  if (!device_)
+    LOG(FATAL) << "Unable to initialize GBM";
+}
+
+}  // namespace ui