Support structured cloning of ES'15 Map and Set

Source/bindings/core/v8/SerializedScriptValue.h

 /*
  * Copyright (C) 2009, 2010 Google Inc. 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
@@ skipping 48 matching lines @@
 class CORE_EXPORT SerializedScriptValue : public ThreadSafeRefCounted<SerializedScriptValue> {
 public:
     // Increment this for each incompatible change to the wire format.
     // Version 2: Added StringUCharTag for UChar v8 strings.
     // Version 3: Switched to using uuids as blob data identifiers.
     // Version 4: Extended File serialization to be complete.
     // Version 5: Added CryptoKeyTag for Key objects.
     // Version 6: Added indexed serialization for File, Blob, and FileList.
     // Version 7: Extended File serialization with user visibility.
     // Version 8: File.lastModified in milliseconds (seconds-based in earlier versions.)
-    static const uint32_t wireFormatVersion = 8;
+    // Version 9: Added Map and Set support.
+    static const uint32_t wireFormatVersion = 9;
 
     // VarInt encoding constants.
     static const int varIntShift = 7;
     static const int varIntMask = (1 << varIntShift) - 1;
 
     virtual ~SerializedScriptValue();
 
     static PassRefPtr<SerializedScriptValue> nullValue();
 
     String toWireString() const { return m_data; }
@@ skipping 40 matching lines @@
     OwnPtr<ArrayBufferContentsArray> m_arrayBufferContentsArray;
     BlobDataHandleMap m_blobDataHandles;
     intptr_t m_externallyAllocatedMemory;
 
     friend class SerializedScriptValueFactory;
 };
 
 } // namespace blink
 
 #endif // SerializedScriptValue_h