diff --git a/base/check.h b/base/check.h
index 4bf8146..02da6306 100644
--- a/base/check.h
+++ b/base/check.h
@@ -84,6 +84,11 @@
   static CheckError DumpWillBeCheck(
       const char* condition,
       const base::Location& location = base::Location::Current());
+  // Takes ownership over (free()s after using) `log_message_str`, for use with
+  // DUMP_WILL_BE_CHECK_op macros.
+  static CheckError DumpWillBeCheckOp(
+      char* log_message_str,
+      const base::Location& location = base::Location::Current());
 
   static CheckError PCheck(
       const char* condition,
@@ -95,6 +100,9 @@
       const char* condition,
       const base::Location& location = base::Location::Current());
 
+  static CheckError DumpWillBeNotReachedNoreturn(
+      const base::Location& location = base::Location::Current());
+
   static CheckError NotImplemented(
       const char* function,
       const base::Location& location = base::Location::Current());