First phase of migration to new named property query callbacks.

src/objects.cc

Index: src/objects.cc
diff --git a/src/objects.cc b/src/objects.cc
index 3f7d92f65d85c19893f74869d6e5e5a67bb93772..1aa60af4f88a570eb35796d10c25e2f3a2164276 100644
--- a/src/objects.cc
+++ b/src/objects.cc
@@ -2013,19 +2013,25 @@ PropertyAttributes JSObject::GetPropertyAttributeWithInterceptor(
   CustomArguments args(interceptor->data(), receiver, this);
   v8::AccessorInfo info(args.end());
   if (!interceptor->query()->IsUndefined()) {
-    v8::NamedPropertyQuery query =
-        v8::ToCData<v8::NamedPropertyQuery>(interceptor->query());
+    v8::NamedPropertyQueryImpl query =
+        v8::ToCData<v8::NamedPropertyQueryImpl>(interceptor->query());
     LOG(ApiNamedPropertyAccess("interceptor-named-has", *holder_handle, name));
-    v8::Handle<v8::Boolean> result;
+    v8::Handle<v8::Value> result;
     {
       // Leaving JavaScript.
       VMState state(EXTERNAL);
       result = query(v8::Utils::ToLocal(name_handle), info);
     }
     if (!result.IsEmpty()) {
-      // Convert the boolean result to a property attribute
-      // specification.
-      return result->IsTrue() ? NONE : ABSENT;
+      // Temporary complicated logic, would be removed soon.
+      if (result->IsBoolean()) {
+        // Convert the boolean result to a property attribute
+        // specification.
+        return result->IsTrue() ? NONE : ABSENT;
+      } else {
+        ASSERT(result->IsInt32());
+        return static_cast<PropertyAttributes>(result->Int32Value());
+      }
     }
   } else if (!interceptor->getter()->IsUndefined()) {
     v8::NamedPropertyGetter getter =