No need to collect literal counts.

src/objects.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_OBJECTS_H_
 #define V8_OBJECTS_H_
 
 #include <iosfwd>
 #include <memory>
 
@@ skipping 7103 matching lines @@
   inline bool HasBuiltinFunctionId();
   inline BuiltinFunctionId builtin_function_id();
   inline void set_builtin_function_id(BuiltinFunctionId id);
   inline bool HasInferredName();
   inline String* inferred_name();
   inline void set_inferred_name(String* inferred_name);
 
   // [script]: Script from which the function originates.
   DECL_ACCESSORS(script, Object)
 
-  // [num_literals]: Number of literals used by this function.
-  inline int num_literals() const;
-  inline void set_num_literals(int value);
-
   // [start_position_and_type]: Field used to store both the source code
   // position, whether or not the function is a function expression,
   // and whether or not the function is a toplevel function. The two
   // least significants bit indicates whether the function is an
   // expression and the rest contains the source code position.
   inline int start_position_and_type() const;
   inline void set_start_position_and_type(int value);
 
   // The function is subject to debugging if a debug info is attached.
   inline bool HasDebugInfo() const;
@@ skipping 4413 matching lines @@
   }
 };
 
 
 }  // NOLINT, false-positive due to second-order macros.
 }  // NOLINT, false-positive due to second-order macros.
 
 #include "src/objects/object-macros-undef.h"
 
 #endif  // V8_OBJECTS_H_