Type Feedback Vector lives in the closure

src/factory.h

 // 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.
 
 #ifndef V8_FACTORY_H_
 #define V8_FACTORY_H_
 
 #include "src/isolate.h"
 #include "src/messages.h"
 #include "src/type-feedback-vector.h"
@@ skipping 609 matching lines @@
         &isolate()->heap()->roots_[Heap::k##name##RootIndex])); \
   }
   PUBLIC_SYMBOL_LIST(SYMBOL_ACCESSOR)
   WELL_KNOWN_SYMBOL_LIST(SYMBOL_ACCESSOR)
 #undef SYMBOL_ACCESSOR
 
   // Allocates a new SharedFunctionInfo object.
   Handle<SharedFunctionInfo> NewSharedFunctionInfo(
       Handle<String> name, int number_of_literals, FunctionKind kind,
       Handle<Code> code, Handle<ScopeInfo> scope_info,
-      Handle<TypeFeedbackVector> feedback_vector);
+      Handle<TypeFeedbackMetadata> feedback_metadata);
   Handle<SharedFunctionInfo> NewSharedFunctionInfo(Handle<String> name,
                                                    MaybeHandle<Code> code,
                                                    bool is_constructor);
 
   // Allocates a new JSMessageObject object.
   Handle<JSMessageObject> NewJSMessageObject(MessageTemplate::Template message,
                                              Handle<Object> argument,
                                              int start_position,
                                              int end_position,
                                              Handle<Object> script,
@@ skipping 60 matching lines @@
   Handle<JSFunction> NewFunction(Handle<Map> map,
                                  Handle<SharedFunctionInfo> info,
                                  Handle<Context> context,
                                  PretenureFlag pretenure = TENURED);
 };
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_FACTORY_H_