Create the skeleton of the C++ -> Rust migration tool.
PiperOrigin-RevId: 448016954
diff --git a/migrator/rs_from_cc/rs_from_cc_lib.h b/migrator/rs_from_cc/rs_from_cc_lib.h
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+// Part of the Crubit project, under the Apache License v2.0 with LLVM
+// Exceptions. See /LICENSE for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+
+#ifndef CRUBIT_MIGRATOR_RS_FROM_CC_RS_FROM_CC_LIB_H_
+#define CRUBIT_MIGRATOR_RS_FROM_CC_RS_FROM_CC_LIB_H_
+
+#include <string>
+
+#include "absl/container/flat_hash_map.h"
+#include "absl/status/statusor.h"
+#include "absl/strings/string_view.h"
+#include "absl/types/span.h"
+
+namespace crubit_rs_from_cc {
+
+// Converts C++ source code into Rust.
+//
+// Parameters:
+// * `cc_file_content`: a string with the C++ source code to convert.
+// * `cc_file_name`: name of the C++ file we're converting. Can be omitted for
+// tests.
+// * `args`: additional command line arguments for Clang (if any)
+//
+absl::StatusOr<std::string> RsFromCc(
+ absl::string_view cc_file_content,
+ absl::string_view cc_file_name = "testing/file_name.cc",
+ absl::Span<const absl::string_view> args = {});
+
+} // namespace crubit_rs_from_cc
+
+#endif // CRUBIT_MIGRATOR_RS_FROM_CC_RS_FROM_CC_LIB_H_
