Revert 105710 - Introduce RadioButtonGroup class to keep track of the group members and required st…

Source/WebCore/html/HTMLFormControlElement.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2001 Dirk Mueller (mueller@kde.org)
  * Copyright (C) 2004, 2005, 2006, 2007 Apple Inc. All rights reserved.
  *           (C) 2006 Alexey Proskuryakov (ap@nypop.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 104 matching lines @@
         bool oldReadOnly = m_readOnly;
         m_readOnly = !attr->isNull();
         if (oldReadOnly != m_readOnly) {
             setNeedsStyleRecalc();
             if (renderer() && renderer()->style()->hasAppearance())
                 renderer()->theme()->stateChanged(renderer(), ReadOnlyState);
         }
     } else if (attr->name() == requiredAttr) {
         bool oldRequired = m_required;
         m_required = !attr->isNull();
-        if (oldRequired != m_required)
-            requiredAttributeChanged();
+        if (oldRequired != m_required) {
+            setNeedsValidityCheck();
+            setNeedsStyleRecalc(); // Updates for :required :optional classes.
+        }
     } else
         HTMLElement::parseMappedAttribute(attr);
     setNeedsWillValidateCheck();
 }
 
-void HTMLFormControlElement::requiredAttributeChanged()
-{
-    setNeedsValidityCheck();
-    // Style recalculation is needed because style selectors may include
-    // :required and :optional pseudo-classes.
-    setNeedsStyleRecalc();
-}
-
 static bool shouldAutofocus(HTMLFormControlElement* element)
 {
     if (!element->autofocus())
         return false;
     if (!element->renderer())
         return false;
     if (element->document()->ignoreAutofocus())
         return false;
     if (element->document()->isSandboxed(SandboxAutomaticFeatures))
         return false;
@@ skipping 340 matching lines @@
     NodeListsNodeData* nodeLists = Node::ensureRareData()->ensureNodeLists(this);
     if (nodeLists->m_labelsNodeListCache)
         return nodeLists->m_labelsNodeListCache;
 
     RefPtr<LabelsNodeList> list = LabelsNodeList::create(this);
     nodeLists->m_labelsNodeListCache = list.get();
     return list.release();
 }
 
 } // namespace Webcore