Remove unused IsDirty

include/v8.h

 // Copyright 2012 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.
 
 /** \mainpage V8 API Reference Guide
  *
  * V8 is Google's open source JavaScript engine.
  *
  * This set of documents provides reference material generated from the
  * V8 header file, include/v8.h.
@@ skipping 2489 matching lines @@
    * Access hidden properties on JavaScript objects. These properties are
    * hidden from the executing JavaScript and only accessible through the V8
    * C++ API. Hidden properties introduced by V8 internally (for example the
    * identity hash) are prefixed with "v8::".
    */
   bool SetHiddenValue(Handle<String> key, Handle<Value> value);
   Local<Value> GetHiddenValue(Handle<String> key);
   bool DeleteHiddenValue(Handle<String> key);
 
   /**
-   * Returns true if this is an instance of an api function (one
-   * created from a function created from a function template) and has
-   * been modified since it was created.  Note that this method is
-   * conservative and may return true for objects that haven't actually
-   * been modified.
-   */
-  bool IsDirty();
-
-  /**
    * Clone this object with a fast but shallow copy.  Values will point
    * to the same values as the original object.
    */
   Local<Object> Clone();
 
   /**
    * Returns the context in which the object was created.
    */
   Local<Context> CreationContext();
 
@@ skipping 4519 matching lines @@
  */
 
 
 }  // namespace v8
 
 
 #undef TYPE_CHECK
 
 
 #endif  // V8_H_