Add a frame sequence number to HistoryItem

Source/web/WebHistoryItem.cpp

 /*
  * Copyright (C) 2009 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 143 matching lines @@
 long long WebHistoryItem::documentSequenceNumber() const
 {
     return m_private->documentSequenceNumber();
 }
 
 void WebHistoryItem::setDocumentSequenceNumber(long long documentSequenceNumber)
 {
     m_private->setDocumentSequenceNumber(documentSequenceNumber);
 }
 
+long long WebHistoryItem::frameSequenceNumber() const
+{
+    return m_private->frameSequenceNumber();
+}
+
+void WebHistoryItem::setFrameSequenceNumber(long long frameSequenceNumber)
+{
+    m_private->setFrameSequenceNumber(frameSequenceNumber);
+}
+
 WebSerializedScriptValue WebHistoryItem::stateObject() const
 {
     return WebSerializedScriptValue(m_private->stateObject());
 }
 
 void WebHistoryItem::setStateObject(const WebSerializedScriptValue& object)
 {
     m_private->setStateObject(object);
 }
 
@@ skipping 48 matching lines @@
     m_private = item;
     return *this;
 }
 
 WebHistoryItem::operator PassRefPtr<HistoryItem>() const
 {
     return m_private.get();
 }
 
 } // namespace blink