[modules] When debug-printing a module, print its origin if possible.

BUG=v8:1569

Review-Url: https://codereview.chromium.org/2711123002
Cr-Commit-Position: refs/heads/master@{#43392}

src/objects-printer.cc

@@ -1235,10 +1235,19 @@ void ModuleInfoEntry::ModuleInfoEntryPrint(std::ostream& os) {  // NOLINT
 
 void Module::ModulePrint(std::ostream& os) {  // NOLINT
   HeapObject::PrintHeader(os, "Module");
+  // TODO(neis): Simplify once modules have a script field.
+  if (!evaluated()) {
+    SharedFunctionInfo* shared = code()->IsSharedFunctionInfo()
+                                     ? SharedFunctionInfo::cast(code())
+                                     : JSFunction::cast(code())->shared();
+    Object* origin = Script::cast(shared->script())->GetNameOrSourceURL();
+    os << "\n - origin: " << Brief(origin);
+  }
   os << "\n - code: " << Brief(code());
   os << "\n - exports: " << Brief(exports());
   os << "\n - requested_modules: " << Brief(requested_modules());
-  os << "\n - evaluated: " << evaluated();
+  os << "\n - instantiated, evaluated: " << instantiated() << ", "
+     << evaluated();
   os << "\n";
 }