[heap] introduce ArrayBufferTracker

src/objects.cc

Index: src/objects.cc
diff --git a/src/objects.cc b/src/objects.cc
index 8caa732ba6c39981dff49dcbe4f4c591ebd544dc..056d687049f18f079dbefaf66591dd650cc894a8 100644
--- a/src/objects.cc
+++ b/src/objects.cc
@@ -15942,15 +15942,14 @@ void JSArrayBuffer::Setup(Handle<JSArrayBuffer> array_buffer, Isolate* isolate,
   array_buffer->set_is_neuterable(shared == SharedFlag::kNotShared);
   array_buffer->set_is_shared(shared == SharedFlag::kShared);
 
-  if (data && !is_external) {
-    isolate->heap()->RegisterNewArrayBuffer(
-        isolate->heap()->InNewSpace(*array_buffer), data, allocated_length);
-  }
-
   Handle<Object> byte_length =
       isolate->factory()->NewNumberFromSize(allocated_length);
   CHECK(byte_length->IsSmi() || byte_length->IsHeapNumber());
   array_buffer->set_byte_length(*byte_length);
+
+  if (data && !is_external) {
+    isolate->heap()->RegisterNewArrayBuffer(*array_buffer);
+  }
 }
 
 
@@ -15998,9 +15997,7 @@ Handle<JSArrayBuffer> JSTypedArray::MaterializeArrayBuffer(
           fixed_typed_array->DataSize());
   buffer->set_backing_store(backing_store);
   buffer->set_is_external(false);
-  isolate->heap()->RegisterNewArrayBuffer(isolate->heap()->InNewSpace(*buffer),
-                                          backing_store,
-                                          fixed_typed_array->DataSize());
+  isolate->heap()->RegisterNewArrayBuffer(*buffer);
   memcpy(buffer->backing_store(),
          fixed_typed_array->DataPtr(),
          fixed_typed_array->DataSize());