[runtime] Port simple String.prototype.indexOf cases to TF Builtin

src/runtime/runtime-array.cc

Index: src/runtime/runtime-array.cc
diff --git a/src/runtime/runtime-array.cc b/src/runtime/runtime-array.cc
index 4e8a96a6d8dfe533ff5aeb12a60253621815e879..78a346f79a45f996c02d98728a1b4a202aac2f34 100644
--- a/src/runtime/runtime-array.cc
+++ b/src/runtime/runtime-array.cc
@@ -537,7 +537,7 @@ RUNTIME_FUNCTION(Runtime_ArrayIndexOf) {
   CONVERT_ARG_HANDLE_CHECKED(Object, from_index, 2);
 
   // Let O be ? ToObject(this value).
-  Handle<Object> receiver_obj = args.at<Object>(0);
+  Handle<Object> receiver_obj = args.at(0);
   if (receiver_obj->IsNull(isolate) || receiver_obj->IsUndefined(isolate)) {
     THROW_NEW_ERROR_RETURN_FAILURE(
         isolate, NewTypeError(MessageTemplate::kCalledOnNullOrUndefined,
@@ -545,8 +545,8 @@ RUNTIME_FUNCTION(Runtime_ArrayIndexOf) {
                                   "Array.prototype.indexOf")));
   }
   Handle<JSReceiver> object;
-  ASSIGN_RETURN_FAILURE_ON_EXCEPTION(
-      isolate, object, Object::ToObject(isolate, args.at<Object>(0)));
+  ASSIGN_RETURN_FAILURE_ON_EXCEPTION(isolate, object,
+                                     Object::ToObject(isolate, args.at(0)));
 
   // Let len be ? ToLength(? Get(O, "length")).
   int64_t len;