[objects] Relax JSBoundFunction verification.

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 4929 matching lines @@
   static MUST_USE_RESULT bool FinishInstantiate(Handle<Module> module,
                                                 v8::Local<v8::Context> context);
 
   DISALLOW_IMPLICIT_CONSTRUCTORS(Module);
 };
 
 // JSBoundFunction describes a bound function exotic object.
 class JSBoundFunction : public JSObject {
  public:
   // [bound_target_function]: The wrapped function object.
+  inline Object* raw_bound_target_function() const;
   DECL_ACCESSORS(bound_target_function, JSReceiver)
 
   // [bound_this]: The value that is always passed as the this value when
   // calling the wrapped function.
   DECL_ACCESSORS(bound_this, Object)
 
   // [bound_arguments]: A list of values whose elements are used as the first
   // arguments to any call to the wrapped function.
   DECL_ACCESSORS(bound_arguments, FixedArray)
 
@@ skipping 2307 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_