Treat UA rules like author rules when matching.

sky/engine/core/css/resolver/StyleResolver.h

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  * Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 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 95 matching lines @@
 
     unsigned accessCount() const { return m_accessCount; }
     void didAccess() { ++m_accessCount; }
 
 private:
     // FIXME: This should probably go away, folded into FontBuilder.
     void updateFont(StyleResolverState&);
 
     void loadPendingResources(StyleResolverState&);
 
-    void matchAuthorRules(Element*, ElementRuleCollector&);
-    void matchAllRules(StyleResolverState&, ElementRuleCollector&);
-    void matchUARules(ElementRuleCollector&);
+    void matchRules(Element&, ElementRuleCollector&);
 
     void applyMatchedProperties(StyleResolverState&, const MatchResult&);
     bool applyAnimatedProperties(StyleResolverState&, Element* animatingElement);
 
     enum StyleApplicationPass {
         HighPriorityProperties,
         LowPriorityProperties
     };
     template <StyleResolver::StyleApplicationPass pass>
     static inline CSSPropertyID firstCSSPropertyId();
@@ skipping 20 matching lines @@
     OwnPtr<StyleResolverStats> m_styleResolverStatsTotals;
     unsigned m_styleResolverStatsSequence;
 
     // Use only for Internals::updateStyleAndReturnAffectedElementCount.
     unsigned m_accessCount;
 };
 
 } // namespace blink
 
 #endif  // SKY_ENGINE_CORE_CSS_RESOLVER_STYLERESOLVER_H_