Heap profiler: use Heap::CommittedMemory to report the "total" memory size.

src/heap-profiler.cc

 // 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 585 matching lines @@
   SmartPointer<char> s_name(
       constructor->ToCString(DISALLOW_NULLS, ROBUST_STRING_TRAVERSAL));
   LOG(HeapSampleJSProducerEvent(GetConstructorName(*s_name),
                                 reinterpret_cast<Address*>(trace)));
 }
 
 
 void HeapProfiler::WriteSample() {
   LOG(HeapSampleBeginEvent("Heap", "allocated"));
   LOG(HeapSampleStats(
-      "Heap", "allocated", Heap::Capacity(), Heap::SizeOfObjects()));
+      "Heap", "allocated", Heap::CommittedMemory(), Heap::SizeOfObjects()));
 
   HistogramInfo info[LAST_TYPE+1];
 #define DEF_TYPE_NAME(name) info[name].set_name(#name);
   INSTANCE_TYPE_LIST(DEF_TYPE_NAME)
 #undef DEF_TYPE_NAME
 
   ConstructorHeapProfile js_cons_profile;
   RetainerHeapProfile js_retainer_profile;
   HeapIterator iterator;
   while (iterator.has_next()) {
@@ skipping 56 matching lines @@
   GlobalHandles::MakeWeak(handle.location(),
                           static_cast<void*>(stack.start()),
                           StackWeakReferenceCallback);
 }
 
 
 #endif  // ENABLE_LOGGING_AND_PROFILING
 
 
 } }  // namespace v8::internal