components: Add Exosphere component.

components/exo/wayland/scoped_wl_types.h

+// 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.
+
+#ifndef COMPONENTS_EXO_WAYLAND_SCOPED_WL_TYPES_H_
+#define COMPONENTS_EXO_WAYLAND_SCOPED_WL_TYPES_H_
+
+#include "base/scoped_generic.h"
+
+extern "C" {
+struct wl_display;
+}
+
+namespace exo {
+namespace wayland {
+namespace internal {
+
+struct ScopedWLDisplayTraits {
+  static wl_display* InvalidValue() { return nullptr; }
+  static void Free(wl_display* display);
+};
+
+}  // namespace internal
+
+using ScopedWLDisplay =
+    base::ScopedGeneric<wl_display*, internal::ScopedWLDisplayTraits>;
+
+}  // namespace wayland
+}  // namespace exo
+
+#endif  // COMPONENTS_EXO_WAYLAND_SCOPED_WL_TYPES_H_