Integrate map marking into static marking visitor.

src/heap.h

 // 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 1471 matching lines @@
   // mark or if we've already filled the bottom 1/16th of the to space,
   // we try to promote this object.
   inline bool ShouldBePromoted(Address old_address, int object_size);
 
   int MaxObjectSizeInNewSpace() { return kMaxObjectSizeInNewSpace; }
 
   void ClearJSFunctionResultCaches();
 
   void ClearNormalizedMapCaches();
 
-  // Clears the cache of ICs related to this map.
-  void ClearCacheOnMap(Map* map) {
-    if (FLAG_cleanup_code_caches_at_gc) {
-      map->ClearCodeCache(this);
-    }
-  }
-
   GCTracer* tracer() { return tracer_; }
 
   // Returns the size of objects residing in non new spaces.
   intptr_t PromotedSpaceSizeOfObjects();
 
   double total_regexp_code_generated() { return total_regexp_code_generated_; }
   void IncreaseTotalRegexpCodeGenerated(int size) {
     total_regexp_code_generated_ += size;
   }
 
@@ skipping 1289 matching lines @@
   AssertNoAllocation no_alloc;  // i.e. no gc allowed.
 
  private:
   DISALLOW_IMPLICIT_CONSTRUCTORS(PathTracer);
 };
 #endif  // DEBUG || LIVE_OBJECT_LIST
 
 } }  // namespace v8::internal
 
 #endif  // V8_HEAP_H_