Implement URLSearchParams.

Source/core/html/HTMLAnchorElement.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2000 Simon Hausmann <hausmann@kde.org>
  * Copyright (C) 2003, 2006, 2007, 2008, 2009, 2010 Apple Inc. All rights reserved.
  *           (C) 2006 Graham Dennis (graham.dennis@gmail.com)
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
@@ skipping 269 matching lines @@
 }
 
 KURL HTMLAnchorElement::href() const
 {
     return document().completeURL(stripLeadingAndTrailingHTMLSpaces(getAttribute(hrefAttr)));
 }
 
 void HTMLAnchorElement::setHref(const AtomicString& value)
 {
     setAttribute(hrefAttr, value);
+    DOMURLUtils::update();
 }
 
 KURL HTMLAnchorElement::url() const
 {
     return href();
 }
 
 void HTMLAnchorElement::setURL(const KURL& url)
 {
     setHref(AtomicString(url.string()));
@@ skipping 280 matching lines @@
 }
 
 bool HTMLAnchorElement::isInteractiveContent() const
 {
     return isLink();
 }
 
 void HTMLAnchorElement::trace(Visitor* visitor)
 {
     visitor->trace(m_prefetchEventHandler);
+    DOMURLUtils::trace(visitor);
     HTMLElement::trace(visitor);
 }
 
 }