Expose v8::Function::GetDisplayName to public API.

include/v8.h

 // Copyright 2012 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 2460 matching lines @@
 
   /**
    * Name inferred from variable or property assignment of this function.
    * Used to facilitate debugging and profiling of JavaScript code written
    * in an OO style, where many functions are anonymous but are assigned
    * to object properties.
    */
   Handle<Value> GetInferredName() const;
 
   /**
+   * User-defined name assigned to the "displayName" property of this function.
+   * Used to facilitate debugging and profiling of JavaScript code.
+   */
+  Handle<Value> GetDisplayName() const;
+
+  /**
    * Returns zero based line number of function body and
    * kLineOffsetNotFound if no information available.
    */
   int GetScriptLineNumber() const;
   /**
    * Returns zero based column number of function body and
    * kLineOffsetNotFound if no information available.
    */
   int GetScriptColumnNumber() const;
 
@@ skipping 3966 matching lines @@
  */
 
 
 }  // namespace v8
 
 
 #undef TYPE_CHECK
 
 
 #endif  // V8_H_