Revert a change for breaking downstream third party libs

Abseil Team · copybara-github · commit fb2340658e8d · 2025-07-09T19:18:55.000-07:00
PiperOrigin-RevId: 781310397
Change-Id: I86e0c2662f95fee7047daa2d55dca1954850b77a
diff --git a/absl/strings/internal/cord_rep_btree_navigator.h b/absl/strings/internal/cord_rep_btree_navigator.h
@@ -16,6 +16,7 @@
 #define ABSL_STRINGS_INTERNAL_CORD_REP_BTREE_NAVIGATOR_H_
 
 #include <cassert>
+#include <iostream>
 
 #include "absl/strings/internal/cord_internal.h"
 #include "absl/strings/internal/cord_rep_btree.h"
