Internal Code Change

PiperOrigin-RevId: 550797615

upb/conformance/BUILD

@@ -61,14 +61,18 @@ upb_proto_reflection_library(
 upb_proto_reflection_library(
     name = "test_messages_proto2_upbdefs",
     testonly = 1,
-    visibility = ["//:__subpackages__"],
+    visibility = [
+        "//visibility:private",  # Only private by automation, not intent. Owner may accept CLs adding visibility. See go/scheuklappen#explicit-private.
+    ],
     deps = ["@com_google_protobuf//src/google/protobuf:test_messages_proto2_proto"],
 )
 
 upb_proto_reflection_library(
     name = "test_messages_proto3_upbdefs",
     testonly = 1,
-    visibility = ["//:__subpackages__"],
+    visibility = [
+        "//visibility:private",  # Only private by automation, not intent. Owner may accept CLs adding visibility. See go/scheuklappen#explicit-private.
+    ],
     deps = ["@com_google_protobuf//src/google/protobuf:test_messages_proto3_proto"],
 )