Deprecate obsolete JSFunction::unchecked_shared accessor.

src/mark-compact.cc

 // Copyright 2012 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 2400 matching lines @@
     if (map->IsFreeSpace()) continue;
 
     ASSERT(map->IsMap());
     if (!map->CanTransition()) continue;
 
     if (map_mark.Get() &&
         map->attached_to_shared_function_info()) {
       // This map is used for inobject slack tracking and has been detached
       // from SharedFunctionInfo during the mark phase.
       // Since it survived the GC, reattach it now.
-      map->unchecked_constructor()->unchecked_shared()->AttachInitialMap(map);
+      map->unchecked_constructor()->shared()->AttachInitialMap(map);
     }
 
     ClearNonLivePrototypeTransitions(map);
     ClearNonLiveMapTransitions(map, map_mark);
 
     if (map_mark.Get()) {
       ClearNonLiveDependentCode(map);
     } else {
       ClearAndDeoptimizeDependentCode(map);
     }
@@ skipping 1833 matching lines @@
   while (buffer != NULL) {
     SlotsBuffer* next_buffer = buffer->next();
     DeallocateBuffer(buffer);
     buffer = next_buffer;
   }
   *buffer_address = NULL;
 }
 
 
 } }  // namespace v8::internal