Replace #include <iostream> with #include <ostream> in int128.cc
@@ -31,7 +31,7 @@
#include <google/protobuf/stubs/int128.h>
#include <iomanip>
-#include <iostream> // NOLINT(readability/streams)
+#include <ostream> // NOLINT(readability/streams)
#include <sstream>
namespace google {