Add the possibility for a code stub to be non-movable...

src/factory.h

 // Copyright 2010 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 234 matching lines @@
       Handle<Map> function_map,
       PretenureFlag pretenure);
 
   static Handle<JSFunction> NewFunctionFromSharedFunctionInfo(
       Handle<SharedFunctionInfo> function_info,
       Handle<Context> context,
       PretenureFlag pretenure = TENURED);
 
   static Handle<Code> NewCode(const CodeDesc& desc,
                               Code::Flags flags,
-                              Handle<Object> self_reference);
+                              Handle<Object> self_reference,
+                              bool immovable = false);
 
   static Handle<Code> CopyCode(Handle<Code> code);
 
   static Handle<Code> CopyCode(Handle<Code> code, Vector<byte> reloc_info);
 
   static Handle<Object> ToObject(Handle<Object> object);
   static Handle<Object> ToObject(Handle<Object> object,
                                  Handle<Context> global_context);
 
   // Interface for creating error objects.
@@ skipping 157 matching lines @@
   // Update the map cache in the global context with (keys, map)
   static Handle<MapCache> AddToMapCache(Handle<Context> context,
                                         Handle<FixedArray> keys,
                                         Handle<Map> map);
 };
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_FACTORY_H_