Expose gpr_asprintf and gpr_strdup
diff --git a/BUILD b/BUILD
index 8b8072e..291ca5d 100644
--- a/BUILD
+++ b/BUILD
@@ -102,6 +102,7 @@
     "include/grpc/support/port_platform.h",
     "include/grpc/support/slice.h",
     "include/grpc/support/slice_buffer.h",
+    "include/grpc/support/string_util.h",
     "include/grpc/support/subprocess.h",
     "include/grpc/support/sync.h",
     "include/grpc/support/sync_generic.h",