Don't scope check in SelectorChecker.

sky/engine/core/html/HTMLContentElement.cpp

 /*
  * Copyright (C) 2011 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.
  *     * Neither the name of Google Inc. nor the names of its
@@ skipping 92 matching lines @@
             if (includesDisallowedPseudoClass(*subSelector))
                 return false;
         }
     }
     return true;
 }
 
 bool HTMLContentElement::matchSelector(const Vector<RawPtr<Node>, 32>& siblings, int nth) const
 {
     for (const CSSSelector* selector = selectorList().first(); selector; selector = CSSSelectorList::next(*selector)) {
-        Element* element = toElement(siblings[nth]);
-        SelectorChecker checker(*element);
-        if (checker.match(*selector, element))
+        SelectorChecker checker(toElement(*siblings[nth]));
+        if (checker.match(*selector))
             return true;
     }
     return false;
 }
 
 }