Fix redefining of attributes on aliased arguments.

src/objects-printer.cc

Index: src/objects-printer.cc
diff --git a/src/objects-printer.cc b/src/objects-printer.cc
index d6e892083826e2232abbb83529457377d524570a..d5c02f4321a0de7dd5f9fa1125adf38e7b101eae 100644
--- a/src/objects-printer.cc
+++ b/src/objects-printer.cc
@@ -563,6 +563,12 @@ void TypeFeedbackInfo::TypeFeedbackInfoPrint(FILE* out) {
 }
 
 
+void AliasedArgumentsEntry::AliasedArgumentsEntryPrint(FILE* out) {
+  HeapObject::PrintHeader(out, "AliasedArgumentsEntry");
+  PrintF(out, "\n - aliased_context_slot: %d", aliased_context_slot());
+}
+
+
 void FixedArray::FixedArrayPrint(FILE* out) {
   HeapObject::PrintHeader(out, "FixedArray");
   PrintF(out, " - length: %d", length());