Add Chromium-only Blender WebEngine parity work

blender-5.2.0/source/blender/blenlib/BLI_tempfile.h

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+/* SPDX-FileCopyrightText: 2023 Blender Authors
+ *
+ * SPDX-License-Identifier: GPL-2.0-or-later */
+
+/** \file
+ * \ingroup bli
+ */
+
+#pragma once
+
+#include "BLI_compiler_attrs.h"
+#include "BLI_sys_types.h"
+
+namespace blender {
+
+/**
+ * Sets `tempdir` from `dirpath` when it's a valid directory.
+ * Simple sanitize operations are performed and a trailing slash is ensured.
+ */
+bool BLI_temp_directory_path_copy_if_valid(char *tempdir,
+                                           const size_t tempdir_maxncpy,
+                                           const char *dirpath) ATTR_NONNULL(1, 3);
+
+/**
+ * Get the path to a directory suitable for temporary files.
+ *
+ * The return path is guaranteed to exist and to be a directory, as well as to contain a trailing
+ * directory separator.
+ *
+ * At maximum the `tempdir_maxncpy` number of characters is written to the `tempdir`.
+ * The directory path is always null-terminated.
+ */
+void BLI_temp_directory_path_get(char *tempdir, const size_t tempdir_maxncpy) ATTR_NONNULL(1);
+
+}  // namespace blender