Decouple tokenizer/tree builder state from WebVTTParser

Source/core/html/track/TextTrackCue.cpp

 /*
  * Copyright (C) 2011 Google Inc.  All rights reserved.
  * Copyright (C) 2011, 2012, 2013 Apple 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.
@@ skipping 486 matching lines @@
 }
 
 void TextTrackCue::invalidateCueIndex()
 {
     m_cueIndex = invalidCueIndex;
 }
 
 void TextTrackCue::createWebVTTNodeTree()
 {
     if (!m_webVTTNodeTree)
-        m_webVTTNodeTree = WebVTTParser::create(0, document())->createDocumentFragmentFromCueText(m_content);
+        m_webVTTNodeTree = WebVTTParser::createDocumentFragmentFromCueText(document(), m_content);
 }
 
 void TextTrackCue::copyWebVTTNodeToDOMTree(ContainerNode* webVTTNode, ContainerNode* parent)
 {
     for (Node* node = webVTTNode->firstChild(); node; node = node->nextSibling()) {
         RefPtr<Node> clonedNode;
         if (node->isWebVTTElement())
             clonedNode = toWebVTTElement(node)->createEquivalentHTMLElement(&document());
         else
             clonedNode = node->cloneNode(false);
@@ skipping 709 matching lines @@
         return false;
     if (m_cueSize != cue.size())
         return false;
     if (align() != cue.align())
         return false;
 
     return true;
 }
 
 } // namespace WebCore