Fix: FunctionTemplate::SetPrototypeAttributes broke prototype object

include/v8.h

 // Copyright 2011 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 2206 matching lines @@
    *
    * Call with a value of true to make the __proto__ accessor ignore
    * instances of the function template.  Call with a value of false
    * to make the __proto__ accessor not ignore instances of the
    * function template.  By default, instances of a function template
    * are not ignored.
    */
   void SetHiddenPrototype(bool value);
 
   /**
-   * Sets the property attributes of the 'prototype' property of functions
-   * created from this FunctionTemplate. Can be any combination of ReadOnly,
-   * DontEnum and DontDelete.
+   * Sets the ReadOnly flag in the attributes of the 'prototype' property
+   * of functions created from this FunctionTemplate to true.
    */
-  void SetPrototypeAttributes(int attributes);
+  void ReadOnlyPrototype();
 
   /**
    * Returns true if the given object is an instance of this function
    * template.
    */
   bool HasInstance(Handle<Value> object);
 
  private:
   FunctionTemplate();
   void AddInstancePropertyAccessor(Handle<String> name,
@@ skipping 1940 matching lines @@
 
 
 }  // namespace v8
 
 
 #undef V8EXPORT
 #undef TYPE_CHECK
 
 
 #endif  // V8_H_