Remove dead markup serialization code.

sky/engine/public/web/WebNode.h

 /*
  * Copyright (C) 2009 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:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 76 matching lines @@
 
     BLINK_EXPORT NodeType nodeType() const;
     BLINK_EXPORT WebNode parentNode() const;
     BLINK_EXPORT WebString nodeName() const;
     BLINK_EXPORT WebDocument document() const;
     BLINK_EXPORT WebNode firstChild() const;
     BLINK_EXPORT WebNode lastChild() const;
     BLINK_EXPORT WebNode previousSibling() const;
     BLINK_EXPORT WebNode nextSibling() const;
     BLINK_EXPORT bool hasChildNodes() const;
-    BLINK_EXPORT WebString createMarkup() const;
     BLINK_EXPORT bool isLink() const;
     BLINK_EXPORT bool isTextNode() const;
     BLINK_EXPORT bool isFocusable() const;
     BLINK_EXPORT bool isContentEditable() const;
     BLINK_EXPORT bool isElementNode() const;
     BLINK_EXPORT void simulateClick();
     BLINK_EXPORT WebElement querySelector(const WebString&, WebExceptionCode&) const;
     BLINK_EXPORT WebElement rootEditableElement() const;
     BLINK_EXPORT bool focused() const;
     BLINK_EXPORT bool remove();
@@ skipping 53 matching lines @@
 }
 
 inline bool operator<(const WebNode& a, const WebNode& b)
 {
     return a.lessThan(b);
 }
 
 } // namespace blink
 
 #endif  // SKY_ENGINE_PUBLIC_WEB_WEBNODE_H_