HeapProfiler: integrate FindUntrackedObjects into js code.

src/builtins.cc

 // 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 262 matching lines @@
     MemoryChunk::IncrementLiveBytesFromMutator(elms->address(), -size_delta);
   }
 
   FixedArrayBase* new_elms = FixedArrayBase::cast(HeapObject::FromAddress(
       elms->address() + size_delta));
   HeapProfiler* profiler = heap->isolate()->heap_profiler();
   if (profiler->is_profiling()) {
     profiler->ObjectMoveEvent(elms->address(),
                               new_elms->address(),
                               new_elms->Size());
+    if (profiler->is_tracking_allocations()) {
+      // Report filler object as a new allocation.
+      // Otherwise it will become an untracked object.
+      profiler->NewObjectEvent(elms->address(), elms->Size());
+    }
   }
   return new_elms;
 }
 
 
 static bool ArrayPrototypeHasNoElements(Heap* heap,
                                         Context* native_context,
                                         JSObject* array_proto) {
   // This method depends on non writability of Object and Array prototype
   // fields.
@@ skipping 1523 matching lines @@
 }
 BUILTIN_LIST_C(DEFINE_BUILTIN_ACCESSOR_C)
 BUILTIN_LIST_A(DEFINE_BUILTIN_ACCESSOR_A)
 BUILTIN_LIST_H(DEFINE_BUILTIN_ACCESSOR_H)
 BUILTIN_LIST_DEBUG_A(DEFINE_BUILTIN_ACCESSOR_A)
 #undef DEFINE_BUILTIN_ACCESSOR_C
 #undef DEFINE_BUILTIN_ACCESSOR_A
 
 
 } }  // namespace v8::internal