Fixing clang-format.
diff --git a/src/core/lib/security/credentials/credentials.h b/src/core/lib/security/credentials/credentials.h
index c6df6cd..b097233 100644
--- a/src/core/lib/security/credentials/credentials.h
+++ b/src/core/lib/security/credentials/credentials.h
@@ -156,12 +156,9 @@
 /* --- grpc_call_credentials. --- */
 
 /* error_details must be NULL if status is GRPC_CREDENTIALS_OK. */
-typedef void (*grpc_credentials_metadata_cb)(grpc_exec_ctx *exec_ctx,
-                                             void *user_data,
-                                             grpc_credentials_md *md_elems,
-                                             size_t num_md,
-                                             grpc_credentials_status status,
-                                             const char *error_details);
+typedef void (*grpc_credentials_metadata_cb)(
+    grpc_exec_ctx *exec_ctx, void *user_data, grpc_credentials_md *md_elems,
+    size_t num_md, grpc_credentials_status status, const char *error_details);
 
 typedef struct {
   void (*destruct)(grpc_call_credentials *c);