1323   Object* new_descriptors;  in AddFastProperty()  local
1326     if (!maybe_new_descriptors->ToObject(&new_descriptors)) {  in AddFastProperty()
1389   new_map->set_instance_descriptors(DescriptorArray::cast(new_descriptors));  in AddFastProperty()
1403   Object* new_descriptors;  in AddConstantFunctionProperty()  local
1406     if (!maybe_new_descriptors->ToObject(&new_descriptors)) {  in AddConstantFunctionProperty()
1417   DescriptorArray* descriptors = DescriptorArray::cast(new_descriptors);  in AddConstantFunctionProperty()
1445     if (!maybe_new_descriptors->ToObject(&new_descriptors)) {  in AddConstantFunctionProperty()
1450   old_map->set_instance_descriptors(DescriptorArray::cast(new_descriptors));  in AddConstantFunctionProperty()
1595   Object* new_descriptors;  in ConvertDescriptorToFieldAndMapTransition()  local
1598     if (!maybe_new_descriptors->ToObject(&new_descriptors)) {  in ConvertDescriptorToFieldAndMapTransition()
1602   old_map->set_instance_descriptors(DescriptorArray::cast(new_descriptors));  in ConvertDescriptorToFieldAndMapTransition()
1630   DescriptorArray* new_descriptors =  in ConvertDescriptorToField()  local
1641   new_map->set_instance_descriptors(new_descriptors);  in ConvertDescriptorToField()
1938     Object* new_descriptors;  in GetExternalArrayElementsMap()  local
1942     if (!maybe_new_descriptors->ToObject(&new_descriptors)) {  in GetExternalArrayElementsMap()
1945     descriptors = DescriptorArray::cast(new_descriptors);  in GetExternalArrayElementsMap()
4304   DescriptorArray* new_descriptors = DescriptorArray::cast(result);  in CopyInsert()  local
4317   new_descriptors->SetNextEnumerationIndex(enumeration_index);  in CopyInsert()
4332     new_descriptors->CopyFrom(to_index++, this, from_index);  in CopyInsert()
4335   new_descriptors->Set(to_index++, descriptor);  in CopyInsert()
4341     new_descriptors->CopyFrom(to_index++, this, from_index);  in CopyInsert()
4344   ASSERT(to_index == new_descriptors->number_of_descriptors());  in CopyInsert()
4345   SLOW_ASSERT(new_descriptors->IsSortedNoDuplicates());  in CopyInsert()
4347   return new_descriptors;  in CopyInsert()
4367   DescriptorArray* new_descriptors = DescriptorArray::cast(result);  in RemoveTransitions()  local
4372     if (IsProperty(i)) new_descriptors->CopyFrom(next_descriptor++, this, i);  in RemoveTransitions()
4374   ASSERT(next_descriptor == new_descriptors->number_of_descriptors());  in RemoveTransitions()
4376   return new_descriptors;  in RemoveTransitions()