Fallback to native cc_proto_aspect

This is needed to support older Bazel versions.

PiperOrigin-RevId: 689104697

bazel/private/BUILD

@@ -150,7 +150,9 @@ bzl_library(
 
 bzl_library(
     name = "cc_proto_aspect_bzl",
-    srcs = ["cc_proto_aspect.bzl"],
+    srcs = [
+        "cc_proto_aspect.bzl",
+    ],
     deps = [":bazel_cc_proto_library_bzl"],
 )
 

bazel/private/cc_proto_aspect.bzl

@@ -1,5 +1,6 @@
 """Exposes cc_proto_aspect to rules_rust"""
 
-load("//bazel/private:bazel_cc_proto_library.bzl", _cc_proto_aspect = "cc_proto_aspect")
+load("//bazel/private:bazel_cc_proto_library.bzl", _cc_proto_aspect = "cc_proto_aspect")  # buildifier: disable=bzl-visibility
+load("//bazel/private:native.bzl", _native_cc_proto_aspect = "native_cc_proto_aspect")  # buildifier: disable=bzl-visibility
 
-cc_proto_aspect = _cc_proto_aspect
+cc_proto_aspect = _cc_proto_aspect if not hasattr(native, "cc_proto_library") else _native_cc_proto_aspect

bazel/private/native.bzl

@@ -1,3 +1,5 @@
 """Renames toplevel symbols so they can be exported in Starlark under the same name"""
 
 native_proto_common = proto_common_do_not_use
+
+native_cc_proto_aspect = cc_proto_aspect