Interpreter tester should accept metadata instead of a vector

test/cctest/test-feedback-vector.h

 // Copyright 2015 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.
 
 #ifndef V8_TEST_FEEDBACK_VECTOR_H_
 #define V8_TEST_FEEDBACK_VECTOR_H_
 
 #include "src/objects.h"
 
 
@@ skipping 28 matching lines @@
   std::vector<FeedbackVectorSlot> slots_;
 };
 
 template <typename Spec>
 Handle<TypeFeedbackVector> NewTypeFeedbackVector(Isolate* isolate, Spec* spec) {
   Handle<TypeFeedbackMetadata> metadata =
       TypeFeedbackMetadata::New(isolate, spec);
   return TypeFeedbackVector::New(isolate, metadata);
 }
 
+template <typename Spec>
+Handle<TypeFeedbackMetadata> NewTypeFeedbackMetadata(Isolate* isolate,
+                                                     Spec* spec) {
+  return TypeFeedbackMetadata::New(isolate, spec);
+}
 
 }  // namespace internal
 }  // namespace v8
 
 #endif