Use more const references in HTMLCollection / LiveNodeList

Source/core/html/RadioNodeList.cpp

 /*
  * Copyright (c) 2012 Motorola Mobility, 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 71 matching lines @@
     for (unsigned i = 0; i < length(); ++i) {
         Node* node = item(i);
         HTMLInputElement* inputElement = toRadioButtonInputElement(node);
         if (!inputElement || inputElement->value() != value)
             continue;
         inputElement->setChecked(true);
         return;
     }
 }
 
-bool RadioNodeList::checkElementMatchesRadioNodeListFilter(Element* testElement) const
+bool RadioNodeList::checkElementMatchesRadioNodeListFilter(const Element& testElement) const
 {
     ASSERT(!m_onlyMatchImgElements);
-    ASSERT(testElement->hasTagName(objectTag) || testElement->isFormControlElement());
+    ASSERT(testElement.hasTagName(objectTag) || testElement.isFormControlElement());
     if (ownerNode()->hasTagName(formTag)) {
-        HTMLFormElement* formElement = toHTMLElement(testElement)->formOwner();
+        HTMLFormElement* formElement = toHTMLElement(testElement).formOwner();
         if (!formElement || formElement != ownerNode())
             return false;
     }
 
-    return testElement->getIdAttribute() == m_name || testElement->getNameAttribute() == m_name;
+    return testElement.getIdAttribute() == m_name || testElement.getNameAttribute() == m_name;
 }
 
-bool RadioNodeList::nodeMatches(Element* testElement) const
+bool RadioNodeList::nodeMatches(const Element& testElement) const
 {
     if (m_onlyMatchImgElements)
-        return testElement->hasTagName(imgTag);
+        return testElement.hasTagName(imgTag);
 
-    if (!testElement->hasTagName(objectTag) && !testElement->isFormControlElement())
+    if (!testElement.hasTagName(objectTag) && !testElement.isFormControlElement())
         return false;
 
-    if (testElement->hasTagName(inputTag) && toHTMLInputElement(testElement)->isImageButton())
+    if (testElement.hasTagName(inputTag) && toHTMLInputElement(testElement).isImageButton())
         return false;
 
     return checkElementMatchesRadioNodeListFilter(testElement);
 }
 
 } // namespace