Remove unused includes from core/html .cpp files

Source/core/html/parser/HTMLTreeBuilderSimulator.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:
  * 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 11 matching lines @@
  * (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/parser/HTMLTreeBuilderSimulator.h"
 
 #include "HTMLNames.h"
 #include "MathMLNames.h"
 #include "SVGNames.h"
-#include "core/html/parser/HTMLDocumentParser.h"
 #include "core/html/parser/HTMLParserIdioms.h"
 #include "core/html/parser/HTMLTokenizer.h"
 #include "core/html/parser/HTMLTreeBuilder.h"
 
 namespace WebCore {
 
 using namespace HTMLNames;
 
 static bool tokenExitsForeignContent(const CompactHTMLToken& token)
 {
@@ skipping 132 matching lines @@
         }
     }
 
     // FIXME: Also setForceNullCharacterReplacement when in text mode.
     tokenizer->setForceNullCharacterReplacement(inForeignContent());
     tokenizer->setShouldAllowCDATA(inForeignContent());
     return true;
 }
 
 }