Generalize all representations when reconfiguring a property of a strict Function subclass.

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 "src/allocation.h"
@@ skipping 2897 matching lines @@
   // Sort the instance descriptors by the hash codes of their keys.
   void Sort();
 
   // Search the instance descriptors for given name.
   INLINE(int Search(Name* name, int number_of_own_descriptors));
 
   // As the above, but uses DescriptorLookupCache and updates it when
   // necessary.
   INLINE(int SearchWithCache(Name* name, Map* map));
 
+  bool IsEqualUpTo(DescriptorArray* desc, int nof_descriptors);
+
   // Allocates a DescriptorArray, but returns the singleton
   // empty descriptor array object if number_of_descriptors is 0.
   static Handle<DescriptorArray> Allocate(Isolate* isolate,
                                           int number_of_descriptors,
                                           int slack = 0);
 
   DECLARE_CAST(DescriptorArray)
 
   // Constant for denoting key was not found.
   static const int kNotFound = -1;
@@ skipping 7809 matching lines @@
     }
     return value;
   }
 };
 
 
 }  // NOLINT, false-positive due to second-order macros.
 }  // NOLINT, false-positive due to second-order macros.
 
 #endif  // V8_OBJECTS_H_