[modules] Turn JSModule into Module.

src/objects-printer.cc

Index: src/objects-printer.cc
diff --git a/src/objects-printer.cc b/src/objects-printer.cc
index adcc63bc46224e4f092402d00391b1e22e6c50ac..1248f946eb96ba59ea5557bcbe77548c84294b8e 100644
--- a/src/objects-printer.cc
+++ b/src/objects-printer.cc
@@ -1145,6 +1145,11 @@ void Box::BoxPrint(std::ostream& os) {  // NOLINT
   os << "\n";
 }
 
+void Module::ModulePrint(std::ostream& os) {  // NOLINT
+  HeapObject::PrintHeader(os, "Module");
+  os << "\n - exports: " << Brief(exports());
+  os << "\n";
+}
 
 void PrototypeInfo::PrototypeInfoPrint(std::ostream& os) {  // NOLINT
   HeapObject::PrintHeader(os, "PrototypeInfo");