Add a flushing mechanism for the WebVTTParser

Source/core/loader/TextTrackLoader.cpp

 /*
  * Copyright (C) 2011 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:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 91 matching lines @@
     if (!m_crossOriginMode.isNull()
         && !m_document.securityOrigin()->canRequest(resource->response().url())
         && !resource->passesAccessControlCheck(m_document.securityOrigin())) {
 
         corsPolicyPreventedLoad();
     }
 
     if (m_state != Failed)
         m_state = resource->errorOccurred() ? Failed : Finished;
 
+    if (m_state == Finished && m_cueParser)
+        m_cueParser->flush();
+
     if (!m_cueLoadTimer.isActive())
         m_cueLoadTimer.startOneShot(0);
 
     cancelLoad();
 }
 
 bool TextTrackLoader::load(const KURL& url, const String& crossOriginMode)
 {
     cancelLoad();
 
@@ skipping 53 matching lines @@
 }
 
 void TextTrackLoader::getNewRegions(Vector<RefPtr<VTTRegion> >& outputRegions)
 {
     ASSERT(m_cueParser);
     if (m_cueParser)
         m_cueParser->getNewRegions(outputRegions);
 }
 
 }