Revert of for-of should throw if result object is not an object

src/runtime/runtime-internal.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/v8.h"
 
 #include "src/arguments.h"
 #include "src/bootstrapper.h"
 #include "src/debug.h"
 #include "src/messages.h"
@@ skipping 37 matching lines @@
 
 RUNTIME_FUNCTION(Runtime_ThrowReferenceError) {
   HandleScope scope(isolate);
   DCHECK(args.length() == 1);
   CONVERT_ARG_HANDLE_CHECKED(Object, name, 0);
   THROW_NEW_ERROR_RETURN_FAILURE(
       isolate, NewReferenceError("not_defined", HandleVector(&name, 1)));
 }
 
 
-RUNTIME_FUNCTION(Runtime_ThrowIteratorResultNotAnObject) {
-  HandleScope scope(isolate);
-  DCHECK(args.length() == 1);
-  CONVERT_ARG_HANDLE_CHECKED(Object, value, 0);
-  THROW_NEW_ERROR_RETURN_FAILURE(
-      isolate,
-      NewTypeError("iterator_result_not_an_object", HandleVector(&value, 1)));
-}
-
-
 RUNTIME_FUNCTION(Runtime_PromiseRejectEvent) {
   DCHECK(args.length() == 3);
   HandleScope scope(isolate);
   CONVERT_ARG_HANDLE_CHECKED(JSObject, promise, 0);
   CONVERT_ARG_HANDLE_CHECKED(Object, value, 1);
   CONVERT_BOOLEAN_ARG_CHECKED(debug_event, 2);
   if (debug_event) isolate->debug()->OnPromiseReject(promise, value);
   Handle<Symbol> key = isolate->factory()->promise_has_handler_symbol();
   // Do not report if we actually have a handler.
   if (JSObject::GetDataProperty(promise, key)->IsUndefined()) {
@@ skipping 238 matching lines @@
 
 RUNTIME_FUNCTION(RuntimeReference_GetFromCache) {
   HandleScope scope(isolate);
   DCHECK(args.length() == 2);
   CONVERT_SMI_ARG_CHECKED(id, 0);
   args[0] = isolate->native_context()->jsfunction_result_caches()->get(id);
   return __RT_impl_Runtime_GetFromCache(args, isolate);
 }
 }
 }  // namespace v8::internal