Remove duplicated headers from core/

Source/core/editing/htmlediting.cpp

 /*
  * Copyright (C) 2004, 2005, 2006, 2007 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 37 matching lines @@
 #include "core/html/HTMLLIElement.h"
 #include "core/html/HTMLOListElement.h"
 #include "core/html/HTMLParagraphElement.h"
 #include "core/html/HTMLTableElement.h"
 #include "core/html/HTMLUListElement.h"
 #include "core/frame/Frame.h"
 #include "core/rendering/RenderObject.h"
 #include "wtf/Assertions.h"
 #include "wtf/StdLibExtras.h"
 #include "wtf/text/StringBuilder.h"
-#include "wtf/unicode/CharacterNames.h"
 
 using namespace std;
 
 namespace WebCore {
 
 using namespace HTMLNames;
 
 // Atomic means that the node has no children, or has children which are ignored for the
 // purposes of editing.
 bool isAtomicNode(const Node *node)
@@ skipping 1092 matching lines @@
     // if the selection starts just before a paragraph break, skip over it
     if (isEndOfParagraph(visiblePosition))
         return visiblePosition.next().deepEquivalent().downstream();
 
     // otherwise, make sure to be at the start of the first selected node,
     // instead of possibly at the end of the last node before the selection
     return visiblePosition.deepEquivalent().downstream();
 }
 
 } // namespace WebCore