Refactor embedded pointer visitors for the serializer

src/mark-compact.cc

 // Copyright 2011 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 903 matching lines @@
       collector->RecordSlot(start, p, o);
       HeapObject* obj = HeapObject::cast(o);
       MarkBit mark = Marking::MarkBitFrom(obj);
       if (mark.Get()) continue;
       VisitUnmarkedObject(collector, obj);
     }
     return true;
   }
 
   static inline void VisitExternalReference(Address* p) { }
+  static inline void VisitExternalReference(RelocInfo* rinfo) { }
   static inline void VisitRuntimeEntry(RelocInfo* rinfo) { }
 
  private:
   class DataObjectVisitor {
    public:
     template<int size>
     static void VisitSpecialized(Map* map, HeapObject* object) {
     }
 
     static void Visit(Map* map, HeapObject* object) {
@@ skipping 2840 matching lines @@
   while (buffer != NULL) {
     SlotsBuffer* next_buffer = buffer->next();
     DeallocateBuffer(buffer);
     buffer = next_buffer;
   }
   *buffer_address = NULL;
 }
 
 
 } }  // namespace v8::internal