Have HTMLCollection::item() return an Element as per specification

Source/web/WebNodeCollection.cpp

 /*
  * 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 13 matching lines @@
  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 #include "config.h"
 #include "WebNodeCollection.h"
 
+#include "WebElement.h"
 #include "core/dom/Node.h"
 #include "core/html/HTMLCollection.h"
 #include "wtf/PassRefPtr.h"
 
-#include "WebNode.h"
-
 using namespace WebCore;
 
 namespace blink {
 
 void WebNodeCollection::reset()
 {
     assign(0);
 }
 
 void WebNodeCollection::assign(const WebNodeCollection& other)
@@ skipping 15 matching lines @@
     if (m_private)
         m_private->deref();
     m_private = p;
 }
 
 unsigned WebNodeCollection::length() const
 {
     return m_private->length();
 }
 
-WebNode WebNodeCollection::nextItem() const
+WebElement WebNodeCollection::nextItem() const
 {
-    Node* node = m_private->item(m_current);
-    if (node)
+    Element* element = m_private->item(m_current);
+    if (element)
         m_current++;
-    return WebNode(node);
+    return WebElement(element);
 }
 
-WebNode WebNodeCollection::firstItem() const
+WebElement WebNodeCollection::firstItem() const
 {
     m_current = 0;
     return nextItem();
 }
 
 } // namespace blink