Export the current data format version used by ValueSerializer.

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 1712 matching lines @@
      */
     virtual void* ReallocateBufferMemory(void* old_buffer, size_t size,
                                          size_t* actual_size);
 
     /*
      * Frees a buffer allocated with |ReallocateBufferMemory|.
      */
     virtual void FreeBufferMemory(void* buffer);
   };
 
+  static uint32_t GetCurrentDataFormatVersion();
+
   explicit ValueSerializer(Isolate* isolate);
   ValueSerializer(Isolate* isolate, Delegate* delegate);
   ~ValueSerializer();
 
   /*
    * Writes out a header, which includes the format version.
    */
   void WriteHeader();
 
   /*
@@ skipping 8174 matching lines @@
  */
 
 
 }  // namespace v8
 
 
 #undef TYPE_CHECK
 
 
 #endif  // INCLUDE_V8_H_