Add Object::IsNullOrUndefined(Isolate*) helper method

src/runtime/runtime-array.cc

 // Copyright 2014 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 "src/runtime/runtime-utils.h"
 
 #include "src/arguments.h"
 #include "src/code-stubs.h"
 #include "src/conversions-inl.h"
 #include "src/elements.h"
@@ skipping 520 matching lines @@
 }
 
 RUNTIME_FUNCTION(Runtime_ArrayIndexOf) {
   HandleScope shs(isolate);
   DCHECK_EQ(3, args.length());
   CONVERT_ARG_HANDLE_CHECKED(Object, search_element, 1);
   CONVERT_ARG_HANDLE_CHECKED(Object, from_index, 2);
 
   // Let O be ? ToObject(this value).
   Handle<Object> receiver_obj = args.at(0);
-  if (receiver_obj->IsNull(isolate) || receiver_obj->IsUndefined(isolate)) {
+  if (receiver_obj->IsNullOrUndefined(isolate)) {
     THROW_NEW_ERROR_RETURN_FAILURE(
         isolate, NewTypeError(MessageTemplate::kCalledOnNullOrUndefined,
                               isolate->factory()->NewStringFromAsciiChecked(
                                   "Array.prototype.indexOf")));
   }
   Handle<JSReceiver> object;
   ASSIGN_RETURN_FAILURE_ON_EXCEPTION(isolate, object,
                                      Object::ToObject(isolate, args.at(0)));
 
   // Let len be ? ToLength(? Get(O, "length")).
@@ skipping 91 matching lines @@
         isolate, spread,
         Execution::Call(isolate, spread_iterable_function,
                         isolate->factory()->undefined_value(), 1, &spread));
   }
 
   return *spread;
 }
 
 }  // namespace internal
 }  // namespace v8