Rename :ancestor to :host-context.

Source/core/css/CSSParserValues.cpp

 /*
  * Copyright (C) 2003 Lars Knoll (knoll@kde.org)
  * Copyright (C) 2004, 2005, 2006, 2008 Apple Inc. All rights reserved.
  *
  * 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
  * version 2 of the License, or (at your option) any later version.
  *
  * This library is distributed in the hope that it will be useful,
@@ skipping 243 matching lines @@
         if (selector->isDistributedPseudoElement())
             return selector;
     } while ((selector = selector->tagHistory()));
     return 0;
 }
 
 bool CSSParserSelector::hasHostPseudoSelector() const
 {
     CSSParserSelector* selector = const_cast<CSSParserSelector*>(this);
     do {
-        if (selector->pseudoType() == CSSSelector::PseudoHost || selector->pseudoType() == CSSSelector::PseudoAncestor)
+        if (selector->pseudoType() == CSSSelector::PseudoHost || selector->pseudoType() == CSSSelector::PseudoHostContext)
             return true;
     } while ((selector = selector->tagHistory()));
     return false;
 }
 
 } // namespace WebCore