Replace slots buffer with remembered set.

src/heap/incremental-marking.h

Index: src/heap/incremental-marking.h
diff --git a/src/heap/incremental-marking.h b/src/heap/incremental-marking.h
index 387dd0c74ad7778e5edde4c10660c91c9aba690a..dd53e19301ff0c3ca1480f1b99f50235aecb2e6f 100644
--- a/src/heap/incremental-marking.h
+++ b/src/heap/incremental-marking.h
@@ -165,15 +165,13 @@ class IncrementalMarking {
   // the incremental cycle (stays white).
   INLINE(bool BaseRecordWrite(HeapObject* obj, Object* value));
   INLINE(void RecordWrite(HeapObject* obj, Object** slot, Object* value));
-  INLINE(void RecordWriteIntoCode(HeapObject* obj, RelocInfo* rinfo,
-                                  Object* value));
+  INLINE(void RecordWriteIntoCode(Code* host, RelocInfo* rinfo, Object* value));
   INLINE(void RecordWriteOfCodeEntry(JSFunction* host, Object** slot,
                                      Code* value));
 
 
   void RecordWriteSlow(HeapObject* obj, Object** slot, Object* value);
-  void RecordWriteIntoCodeSlow(HeapObject* obj, RelocInfo* rinfo,
-                               Object* value);
+  void RecordWriteIntoCodeSlow(Code* host, RelocInfo* rinfo, Object* value);
   void RecordWriteOfCodeEntrySlow(JSFunction* host, Object** slot, Code* value);
   void RecordCodeTargetPatch(Code* host, Address pc, HeapObject* value);
   void RecordCodeTargetPatch(Address pc, HeapObject* value);