Have CSSParserContext take a Document reference in argument

Source/core/html/shadow/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 49 matching lines @@
 }
 
 HTMLContentElement::~HTMLContentElement()
 {
 }
 
 void HTMLContentElement::parseSelect()
 {
     ASSERT(m_shouldParseSelect);
 
-    CSSParser parser(&document());
+    CSSParser parser(document());
     parser.parseSelector(m_select, m_selectorList);
     m_shouldParseSelect = false;
     m_isValidSelector = validateSelect();
     if (!m_isValidSelector) {
         CSSSelectorList emptyList;
         m_selectorList.adopt(emptyList);
     }
 }
 
 void HTMLContentElement::parseAttribute(const QualifiedName& name, const AtomicString& value)
@@ skipping 38 matching lines @@
 bool HTMLContentElement::matchSelector(const Vector<Node*>& siblings, int nth) const
 {
     for (const CSSSelector* selector = selectorList().first(); selector; selector = CSSSelectorList::next(selector)) {
         if (checkOneSelector(selector, siblings, nth))
             return true;
     }
     return false;
 }
 
 }