Add a flushing mechanism for the WebVTTParser

Source/core/html/track/WebVTTParser.h

 /*
  * 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:
  *
  *     * 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 87 matching lines @@
 
     // Useful functions for parsing percentage settings.
     static float parseFloatPercentageValue(const String&, bool&);
     static FloatPoint parseFloatPercentageValuePair(const String&, char, bool&);
 
     // Create the DocumentFragment representation of the WebVTT cue text.
     static PassRefPtr<DocumentFragment> createDocumentFragmentFromCueText(Document&, const String&);
 
     // Input data to the parser to parse.
     void parseBytes(const char* data, unsigned length);
+    void flush();
 
     // Transfers ownership of last parsed cues to caller.
     void getNewCues(Vector<RefPtr<TextTrackCue> >&);
     void getNewRegions(Vector<RefPtr<VTTRegion> >&);
 
 private:
     WebVTTParser(WebVTTParserClient*, Document&);
 
     Document* m_document;
     ParseState m_state;
 
+    void parse(const String& textData);
+    void flushPendingCue();
     bool hasRequiredFileIdentifier(const String& line);
     ParseState collectCueId(const String&);
     ParseState collectTimingsAndSettings(const String&);
-    ParseState collectCueText(const String&, bool);
+    ParseState collectCueText(const String&);
     ParseState ignoreBadCue(const String&);
 
     void createNewCue();
     void resetCueValues();
 
     void collectMetadataHeader(const String&);
     void createNewRegion();
 
     void skipWhiteSpace(const String&, unsigned*);
     static void skipLineTerminator(const String& data, unsigned*);
@@ skipping 12 matching lines @@
     WebVTTParserClient* m_client;
 
     Vector<RefPtr<TextTrackCue> > m_cuelist;
 
     Vector<RefPtr<VTTRegion> > m_regionList;
 };
 
 } // namespace WebCore
 
 #endif