Remove unused includes from core/html .cpp files

Source/core/html/HTMLVideoElement.cpp

 /*
  * Copyright (C) 2007, 2008, 2009, 2010 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
@@ skipping 16 matching lines @@
 #include "core/html/HTMLVideoElement.h"
 
 #include "CSSPropertyNames.h"
 #include "HTMLNames.h"
 #include "bindings/v8/ScriptController.h"
 #include "core/dom/Attribute.h"
 #include "core/dom/Document.h"
 #include "core/dom/ExceptionCode.h"
 #include "core/html/HTMLImageLoader.h"
 #include "core/html/parser/HTMLParserIdioms.h"
-#include "core/page/Chrome.h"
-#include "core/page/ChromeClient.h"
 #include "core/page/Frame.h"
-#include "core/page/Page.h"
 #include "core/page/Settings.h"
 #include "core/rendering/RenderImage.h"
 #include "core/rendering/RenderVideo.h"
 
 namespace WebCore {
 
 using namespace HTMLNames;
 
 inline HTMLVideoElement::HTMLVideoElement(const QualifiedName& tagName, Document* document, bool createdByParser)
     : HTMLMediaElement(tagName, document, createdByParser)
@@ skipping 230 matching lines @@
 
 KURL HTMLVideoElement::posterImageURL() const
 {
     String url = stripLeadingAndTrailingHTMLSpaces(imageSourceURL());
     if (url.isEmpty())
         return KURL();
     return document()->completeURL(url);
 }
 
 }