Clean up forward declarations in WebKit/Source

Source/core/editing/htmlediting.h

 /*
  * Copyright (C) 2004, 2006, 2008 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 18 matching lines @@
 #include "core/dom/Position.h"
 #include "core/editing/EditingBoundary.h"
 #include "platform/text/TextDirection.h"
 #include "wtf/Forward.h"
 #include "wtf/unicode/CharacterNames.h"
 
 namespace blink {
 
 class Document;
 class Element;
-class ExceptionState;
 class HTMLBRElement;
 class HTMLElement;
 class HTMLLIElement;
 class HTMLOListElement;
 class HTMLSpanElement;
 class HTMLUListElement;
 class Node;
 class Position;
 class PositionWithAffinity;
 class Range;
@@ skipping 210 matching lines @@
     // FIXME: this is required until 6853027 is fixed and text checking can do this for us.
     return character == '\'' || character == rightSingleQuotationMark || character == hebrewPunctuationGershayim;
 }
 
 String stringWithRebalancedWhitespace(const String&, bool startIsStartOfParagraph, bool endIsEndOfParagraph);
 const String& nonBreakingSpaceString();
 
 }
 
 #endif