Remove unused includes from core/html .cpp files

Source/core/html/track/WebVTTElement.cpp

 /*
  * Copyright (C) 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:
  * 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
  *    documentation and/or other materials provided with the distribution.
  *
  * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE COMPUTER, INC. OR
  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
  * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 #include "config.h"
 
 #include "core/html/track/WebVTTElement.h"
 
-#include "core/html/track/TextTrack.h"
-
 namespace WebCore {
 
 static const QualifiedName& nodeTypeToTagName(WebVTTNodeType nodeType)
 {
     DEFINE_STATIC_LOCAL(QualifiedName, cTag, (nullAtom, "c", nullAtom));
     DEFINE_STATIC_LOCAL(QualifiedName, vTag, (nullAtom, "v", nullAtom));
     DEFINE_STATIC_LOCAL(QualifiedName, langTag, (nullAtom, "lang", nullAtom));
     DEFINE_STATIC_LOCAL(QualifiedName, bTag, (nullAtom, "b", nullAtom));
     DEFINE_STATIC_LOCAL(QualifiedName, uTag, (nullAtom, "u", nullAtom));
     DEFINE_STATIC_LOCAL(QualifiedName, iTag, (nullAtom, "i", nullAtom));
@@ skipping 71 matching lines @@
     default:
         ASSERT_NOT_REACHED();
     }
 
     htmlElement.get()->setAttribute(HTMLNames::classAttr, getAttribute(HTMLNames::classAttr));
     return htmlElement;
 }
 
 } // namespace WebCore