Implement heap profiler memory usage reporting.

src/heap-profiler.h

 // Copyright 2009-2010 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 31 matching lines @@
     if (profiler != NULL && profiler->is_profiling()) {                      \
       profiler->call;                                                        \
     }                                                                        \
   } while (false)
 
 class HeapProfiler {
  public:
   static void SetUp();
   static void TearDown();
 
+  static size_t GetMemorySizeUsedByProfiler();
+
   static HeapSnapshot* TakeSnapshot(const char* name,
                                     int type,
                                     v8::ActivityControl* control);
   static HeapSnapshot* TakeSnapshot(String* name,
                                     int type,
                                     v8::ActivityControl* control);
 
   static void StartHeapObjectsTracking();
   static void StopHeapObjectsTracking();
   static SnapshotObjectId PushHeapObjectsStats(OutputStream* stream);
@@ skipping 30 matching lines @@
   SnapshotObjectId PushHeapObjectsStatsImpl(OutputStream* stream);
 
   HeapSnapshotsCollection* snapshots_;
   unsigned next_snapshot_uid_;
   List<v8::HeapProfiler::WrapperInfoCallback> wrapper_callbacks_;
 };
 
 } }  // namespace v8::internal
 
 #endif  // V8_HEAP_PROFILER_H_