Remove unused includes from core/{editing,fileapi,history,html}

Source/core/html/HTMLSourceElement.cpp

 /*
  * Copyright (C) 2007, 2008, 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 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/HTMLSourceElement.h"
 
 #include "HTMLNames.h"
 #include "core/dom/Event.h"
 #include "core/dom/EventNames.h"
-#include "core/html/HTMLDocument.h"
 #include "core/html/HTMLMediaElement.h"
 #include "core/platform/Logging.h"
 
 using namespace std;
 
 namespace WebCore {
 
 using namespace HTMLNames;
 
 inline HTMLSourceElement::HTMLSourceElement(const QualifiedName& tagName, Document* document)
@@ skipping 74 matching lines @@
     LOG(Media, "HTMLSourceElement::errorEventTimerFired - %p", this);
     dispatchEvent(Event::create(eventNames().errorEvent, false, true));
 }
 
 bool HTMLSourceElement::isURLAttribute(const Attribute& attribute) const
 {
     return attribute.name() == srcAttr || HTMLElement::isURLAttribute(attribute);
 }
 
 }