Introduce isHTMLAnchorElement and toHTMLAnchorElement

Source/core/rendering/HitTestResult.cpp

 /*
  * Copyright (C) 2006, 2008, 2011 Apple Inc. All rights reserved.
  * Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies)
  *
  * 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
  * version 2 of the License, or (at your option) any later version.
  *
  * This library is distributed in the hope that it will be useful,
@@ skipping 307 matching lines @@
         return static_cast<HTMLMediaElement*>(m_innerNonSharedNode.get());
     return 0;
 }
 
 KURL HitTestResult::absoluteLinkURL() const
 {
     if (!(m_innerURLElement && m_innerURLElement->document()))
         return KURL();
 
     AtomicString urlString;
-    if (m_innerURLElement->hasTagName(aTag) || isHTMLAreaElement(m_innerURLElement.get()) || m_innerURLElement->hasTagName(linkTag))
+    if (isHTMLAnchorElement(m_innerURLElement.get()) || isHTMLAreaElement(m_innerURLElement.get()) || m_innerURLElement->hasTagName(linkTag))
         urlString = m_innerURLElement->getAttribute(hrefAttr);
     else if (m_innerURLElement->hasTagName(SVGNames::aTag))
         urlString = m_innerURLElement->getAttribute(XLinkNames::hrefAttr);
     else
         return KURL();
 
     return m_innerURLElement->document()->completeURL(stripLeadingAndTrailingHTMLSpaces(urlString));
 }
 
 bool HitTestResult::isLiveLink() const
 {
     if (!(m_innerURLElement && m_innerURLElement->document()))
         return false;
 
-    if (m_innerURLElement->hasTagName(aTag))
-        return static_cast<HTMLAnchorElement*>(m_innerURLElement.get())->isLiveLink();
+    if (isHTMLAnchorElement(m_innerURLElement.get()))
+        return toHTMLAnchorElement(m_innerURLElement.get())->isLiveLink();
 
     if (m_innerURLElement->hasTagName(SVGNames::aTag))
         return m_innerURLElement->isLink();
 
     return false;
 }
 
 bool HitTestResult::isMisspelled() const
 {
     if (!targetNode())
@@ skipping 132 matching lines @@
 {
     NodeRenderingTraversal::ParentDetails details;
     for (Node* node = m_innerNode.get(); node; node = NodeRenderingTraversal::parent(node, &details))
         if (node->isElementNode())
             return toElement(node);
 
     return 0;
 }
 
 } // namespace WebCore