Use the LookupIterator for SetElement and friends

test/cctest/test-migrations.cc

 // Copyright 2015 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include <stdlib.h>
 #include <utility>
 
 #include "src/v8.h"
 
 #include "src/code-stubs.h"
@@ skipping 490 matching lines @@
 
   Handle<Object> obj_value =
       Object::GetProperty(isolate->global_object(), obj_name).ToHandleChecked();
   CHECK(obj_value->IsJSObject());
   Handle<JSObject> obj = Handle<JSObject>::cast(obj_value);
 
   CHECK_EQ(1, obj->map()->NumberOfOwnDescriptors());
   CHECK(obj->map()->instance_descriptors()->GetValue(0)->IsAccessorPair());
 
   Handle<Object> value(Smi::FromInt(42), isolate);
-  JSObject::SetOwnPropertyIgnoreAttributes(
-      obj, foo_str, value, NONE, JSObject::DONT_FORCE_FIELD).ToHandleChecked();
+  JSObject::SetOwnPropertyIgnoreAttributes(obj, foo_str, value, NONE).Check();
 
   // Check that the property contains |value|.
   CHECK_EQ(1, obj->map()->NumberOfOwnDescriptors());
   FieldIndex index = FieldIndex::ForDescriptor(obj->map(), 0);
   Object* the_value = obj->RawFastPropertyAt(index);
   CHECK(the_value->IsSmi());
   CHECK_EQ(42, Smi::cast(the_value)->value());
 }
 
 
@@ skipping 1551 matching lines @@
   Handle<AccessorPair> pair = CreateAccessorPair(true, true);
   TransitionToAccessorConstantOperator transition_op(pair);
 
   SameMapChecker checker;
   TestTransitionTo(transition_op, transition_op, checker);
 }
 
 
 // TODO(ishell): add this test once IS_ACCESSOR_FIELD_SUPPORTED is supported.
 // TEST(TransitionAccessorConstantToAnotherAccessorConstant)