Revert 93001 - Apple-style-span class seems unnecessary

Source/WebCore/editing/ApplyStyleCommand.h

 /*
  * Copyright (C) 2005, 2006, 2008, 2009 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 111 matching lines @@
     EditAction m_editingAction;
     EPropertyLevel m_propertyLevel;
     Position m_start;
     Position m_end;
     bool m_useEndingSelection;
     RefPtr<Element> m_styledInlineElement;
     bool m_removeOnly;
     IsInlineElementToRemoveFunction m_isInlineElementToRemoveFunction;
 };
 
-bool isLegacyAppleStyleSpan(const Node*);
+bool isStyleSpan(const Node*);
 bool isStyleSpanOrSpanWithOnlyStyleAttribute(const Element*);
 PassRefPtr<HTMLElement> createStyleSpanElement(Document*);
 
 } // namespace WebCore
 
 #endif