Add initial semi-working producers profile.

src/heap-profiler.h

 // Copyright 2009 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 238 matching lines @@
   void DebugPrintStats(Printer* printer);
   void StoreReference(const JSObjectsCluster& cluster, HeapObject* ref);
 
  private:
   ZoneScope zscope_;
   JSObjectsRetainerTree retainers_tree_;
   ClustersCoarser coarser_;
 };
 
 
+class ProducerHeapProfile : public AllStatic {
+ public:
+  static void Setup();
+  static void RecordJSObjectAllocation(Object* obj);
+ private:
+  static bool can_log_;
+};
+
 #endif  // ENABLE_LOGGING_AND_PROFILING
 
 } }  // namespace v8::internal
 
 #endif  // V8_HEAP_PROFILER_H_