Remove state-specific appendTo*/begin* methods from VTTToken

Source/core/html/track/vtt/VTTTokenizer.h

Index: Source/core/html/track/vtt/VTTTokenizer.h
diff --git a/Source/core/html/track/vtt/VTTTokenizer.h b/Source/core/html/track/vtt/VTTTokenizer.h
index 52b43b538806d49f9e21f432e8770747c6451c54..a3cd2794d57442f0711540f34bcf2091b29d3220 100644
--- a/Source/core/html/track/vtt/VTTTokenizer.h
+++ b/Source/core/html/track/vtt/VTTTokenizer.h
@@ -65,12 +65,6 @@ public:
 
     inline bool haveBufferedCharacterToken() { return false; }
 
-    inline void bufferCharacter(UChar character)
-    {
-        ASSERT(character != kEndOfFileMarker);
-        m_token->appendToCharacter(character);
-    }
-
     inline bool advanceAndEmitToken(SegmentedString& source, VTTTokenTypes::Type type)
     {
         source.advanceAndUpdateLineNumber();