Implement immutable prototype chains

src/objects-printer.cc

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "src/objects.h"
 
 #include "src/disasm.h"
 #include "src/disassembler.h"
 #include "src/interpreter/bytecodes.h"
 #include "src/objects-inl.h"
@@ skipping 1126 matching lines @@
 }
 
 
 void ObjectTemplateInfo::ObjectTemplateInfoPrint(std::ostream& os) {  // NOLINT
   HeapObject::PrintHeader(os, "ObjectTemplateInfo");
   os << "\n - tag: " << Brief(tag());
   os << "\n - serial_number: " << Brief(serial_number());
   os << "\n - property_list: " << Brief(property_list());
   os << "\n - property_accessors: " << Brief(property_accessors());
   os << "\n - constructor: " << Brief(constructor());
-  os << "\n - internal_field_count: " << Brief(internal_field_count());
+  os << "\n - internal_field_count: " << internal_field_count();
+  os << "\n - immutable_proto: " << (immutable_proto() ? "true" : "false");
   os << "\n";
 }
 
 
 void AllocationSite::AllocationSitePrint(std::ostream& os) {  // NOLINT
   HeapObject::PrintHeader(os, "AllocationSite");
   os << "\n - weak_next: " << Brief(weak_next());
   os << "\n - dependent code: " << Brief(dependent_code());
   os << "\n - nested site: " << Brief(nested_site());
   os << "\n - memento found count: "
@@ skipping 232 matching lines @@
 void JSObject::PrintTransitions(std::ostream& os) {  // NOLINT
   Object* transitions = map()->raw_transitions();
   int num_transitions = TransitionArray::NumberOfTransitions(transitions);
   if (num_transitions == 0) return;
   os << "\n - transitions";
   TransitionArray::PrintTransitions(os, transitions, false);
 }
 #endif  // defined(DEBUG) || defined(OBJECT_PRINT)
 }  // namespace internal
 }  // namespace v8