Remove last LookupOwnRealNamedProperty usage from runtime.cc

src/runtime.cc

 // Copyright 2012 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 <limits>
 
 #include "src/v8.h"
 
 #include "src/accessors.h"
@@ skipping 5008 matching lines @@
   CONVERT_SMI_ARG_CHECKED(unchecked, 3);
   RUNTIME_ASSERT((unchecked & ~(READ_ONLY | DONT_ENUM | DONT_DELETE)) == 0);
   PropertyAttributes attr = static_cast<PropertyAttributes>(unchecked);
 
   // Check access rights if needed.
   if (js_object->IsAccessCheckNeeded() &&
       !isolate->MayNamedAccess(js_object, name, v8::ACCESS_SET)) {
     return isolate->heap()->undefined_value();
   }
 
-  LookupResult lookup(isolate);
-  js_object->LookupOwnRealNamedProperty(name, &lookup);
+  LookupIterator it(js_object, name, LookupIterator::CHECK_PROPERTY);
 
   // Take special care when attributes are different and there is already
-  // a property. For simplicity we normalize the property which enables us
-  // to not worry about changing the instance_descriptor and creating a new
-  // map.
-  if (lookup.IsFound() &&
-      (attr != lookup.GetAttributes() || lookup.IsPropertyCallbacks())) {
+  // a property.
+  if (it.IsFound() && it.HasProperty() &&
+      it.property_kind() == LookupIterator::ACCESSOR) {
     // Use IgnoreAttributes version since a readonly property may be
     // overridden and SetProperty does not allow this.
     Handle<Object> result;
     ASSIGN_RETURN_FAILURE_ON_EXCEPTION(
         isolate, result,
         JSObject::SetOwnPropertyIgnoreAttributes(
             js_object, name, obj_value, attr,
             JSObject::DONT_FORCE_FIELD));
     return *result;
   }
@@ skipping 10578 matching lines @@
   }
   return NULL;
 }
 
 
 const Runtime::Function* Runtime::FunctionForId(Runtime::FunctionId id) {
   return &(kIntrinsicFunctions[static_cast<int>(id)]);
 }
 
 } }  // namespace v8::internal