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

Source/core/html/ClassList.h

 /*
  * Copyright (C) 2010 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 @@
  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 #ifndef ClassList_h
 #define ClassList_h
 
 #include "HTMLNames.h"
 #include "core/dom/Element.h"
 #include "core/dom/SpaceSplitString.h"
 #include "core/html/DOMTokenList.h"
-#include <wtf/OwnPtr.h>
-#include <wtf/PassOwnPtr.h>
-#include <wtf/Vector.h>
+#include "wtf/OwnPtr.h"
+#include "wtf/PassOwnPtr.h"
 
 namespace WebCore {
 
 class Element;
 
 typedef int ExceptionCode;
 
 class ClassList : public DOMTokenList {
 public:
     static PassOwnPtr<ClassList> create(Element* element)
@@ skipping 21 matching lines @@
     virtual AtomicString value() const OVERRIDE { return m_element->getAttribute(HTMLNames::classAttr); }
     virtual void setValue(const AtomicString& value) OVERRIDE { m_element->setAttribute(HTMLNames::classAttr, value); }
 
     Element* m_element;
     mutable OwnPtr<SpaceSplitString> m_classNamesForQuirksMode;
 };
 
 } // namespace WebCore
 
 #endif // ClassList_h