Provide baseline for new GC infrastructure.

src/objects.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 918 matching lines @@
 
   // True if this map word's overflow bit is set.
   inline bool IsOverflowed();
 
   // Return this map word but with its overflow bit set.
   inline void SetOverflow();
 
   // Return this map word but with its overflow bit cleared.
   inline void ClearOverflow();
 
-
   // Compacting phase of a full compacting collection: the map word of live
   // objects contains an encoding of the original map address along with the
   // forwarding address (represented as an offset from the first live object
   // in the same page as the (old) object address).
 
   // Create a map word from a map address and a forwarding address offset.
   static inline MapWord EncodeAddress(Address map_address, int offset);
 
   // Return the map address encoded in this map word.
   inline Address DecodeMapAddress(MapSpace* map_space);
@@ skipping 5151 matching lines @@
     } else {
       value &= ~(1 << bit_position);
     }
     return value;
   }
 };
 
 } }  // namespace v8::internal
 
 #endif  // V8_OBJECTS_H_