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

Source/core/editing/DeleteSelectionCommand.cpp

 /*
  * Copyright (C) 2005 Apple Computer, 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 10 matching lines @@
  * 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/editing/DeleteSelectionCommand.h"
 
 #include "HTMLNames.h"
 #include "core/dom/Document.h"
-#include "core/dom/DocumentFragment.h"
-#include "core/dom/DocumentMarkerController.h"
 #include "core/dom/Element.h"
 #include "core/dom/NodeTraversal.h"
 #include "core/dom/Text.h"
 #include "core/editing/EditingBoundary.h"
 #include "core/editing/Editor.h"
 #include "core/editing/VisibleUnits.h"
 #include "core/editing/htmlediting.h"
 #include "core/html/HTMLInputElement.h"
-#include "core/html/HTMLTextAreaElement.h"
-#include "core/page/EditorClient.h"
 #include "core/page/Frame.h"
 #include "core/rendering/RenderTableCell.h"
 
 namespace WebCore {
 
 using namespace HTMLNames;
 
 static bool isTableRow(const Node* node)
 {
     return node && node->hasTagName(trTag);
@@ skipping 778 matching lines @@
 
 // Normally deletion doesn't preserve the typing style that was present before it.  For example,
 // type a character, Bold, then delete the character and start typing.  The Bold typing style shouldn't
 // stick around.  Deletion should preserve a typing style that *it* sets, however.
 bool DeleteSelectionCommand::preservesTypingStyle() const
 {
     return m_typingStyle;
 }
 
 } // namespace WebCore