Implement immutable prototype chains

src/objects-debug.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/bootstrapper.h"
 #include "src/disasm.h"
 #include "src/disassembler.h"
 #include "src/field-type.h"
@@ skipping 970 matching lines @@
   VerifyPointer(instance_template());
   VerifyPointer(signature());
   VerifyPointer(access_check_info());
 }
 
 
 void ObjectTemplateInfo::ObjectTemplateInfoVerify() {
   CHECK(IsObjectTemplateInfo());
   TemplateInfoVerify();
   VerifyPointer(constructor());
-  VerifyPointer(internal_field_count());
+  VerifyPointer(data());
 }
 
 
 void AllocationSite::AllocationSiteVerify() {
   CHECK(IsAllocationSite());
 }
 
 
 void AllocationMemento::AllocationMementoVerify() {
   CHECK(IsAllocationMemento());
@@ skipping 328 matching lines @@
 
   // Both are done at the same time.
   CHECK_EQ(new_it.done(), old_it.done());
 }
 
 
 #endif  // DEBUG
 
 }  // namespace internal
 }  // namespace v8