Remove the mode getter/setter for in-band text tracks

Source/web/InbandTextTrackPrivateImpl.cpp

 /*
  * Copyright (C) 2013 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 31 matching lines @@
 {
     ASSERT(track);
     track->setClient(this);
 }
 
 InbandTextTrackPrivateImpl::~InbandTextTrackPrivateImpl()
 {
     m_track->setClient(0);
 }
 
-void InbandTextTrackPrivateImpl::setMode(Mode mode)
-{
-    m_track->setMode(static_cast<WebInbandTextTrack::Mode>(mode));
-}
-
-WebCore::InbandTextTrackPrivate::Mode InbandTextTrackPrivateImpl::mode() const
-{
-    return static_cast<WebCore::InbandTextTrackPrivate::Mode>(m_track->mode());
-}
-
 WebCore::InbandTextTrackPrivate::Kind InbandTextTrackPrivateImpl::kind() const
 {
     return static_cast<WebCore::InbandTextTrackPrivate::Kind>(m_track->kind());
 }
 
 AtomicString InbandTextTrackPrivateImpl::label() const
 {
     return m_track->label();
 }
 
@@ skipping 11 matching lines @@
     double start,
     double end,
     const WebString& id,
     const WebString& content,
     const WebString& settings)
 {
     client()->addWebVTTCue(this, start, end, id, content, settings);
 }
 
 } // namespace WebKit