[builtins] Remove template argument from args.target().

src/builtins/builtins-iterator.cc

 // Copyright 2016 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/builtins/builtins-utils.h"
 #include "src/builtins/builtins.h"
 #include "src/frames-inl.h"
 
 namespace v8 {
 namespace internal {
@@ skipping 23 matching lines @@
 
 BUILTIN(FixedArrayIteratorNext) {
   HandleScope scope(isolate);
   DCHECK_EQ(1, args.length());
   Handle<Object> receiver = args.at<Object>(0);
 
   // It is an error if this function is called on anything other than the
   // particular iterator object for which the function was created.
   if (!receiver->IsJSFixedArrayIterator() ||
       Handle<JSFixedArrayIterator>::cast(receiver)->initial_next() !=
-          *args.target<JSFunction>()) {
+          *args.target()) {
     THROW_NEW_ERROR_RETURN_FAILURE(
         isolate, NewTypeError(MessageTemplate::kIncompatibleMethodReceiver,
                               isolate->factory()->next_string(), receiver));
   }
 
   auto iterator = Handle<JSFixedArrayIterator>::cast(receiver);
   Handle<Object> value;
   bool done;
 
   int index = iterator->index();
   if (index < iterator->array()->length()) {
     value = handle(iterator->array()->get(index), isolate);
     done = false;
     iterator->set_index(index + 1);
   } else {
     value = isolate->factory()->undefined_value();
     done = true;
   }
 
   return *isolate->factory()->NewJSIteratorResult(value, done);
 }
 
 }  // namespace internal
 }  // namespace v8