Revert of Removed unused CascadeOrder.

Source/core/css/ElementRuleCollector.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 21 matching lines @@
 
 namespace blink {
 
 class CSSStyleSheet;
 class CSSRuleList;
 class RuleData;
 class RuleSet;
 class SelectorFilter;
 class StaticCSSRuleList;
 
+typedef unsigned CascadeOrder;
+
+const CascadeOrder ignoreCascadeOrder = 0;
+
 class MatchedRule {
     ALLOW_ONLY_INLINE_ALLOCATION();
 public:
-    MatchedRule(const RuleData* ruleData, unsigned specificity, unsigned styleSheetIndex, const CSSStyleSheet* parentStyleSheet)
+    MatchedRule(const RuleData* ruleData, unsigned specificity, CascadeOrder cascadeOrder, unsigned styleSheetIndex, const CSSStyleSheet* parentStyleSheet)
         : m_ruleData(ruleData)
         , m_specificity(specificity)
         , m_parentStyleSheet(parentStyleSheet)
     {
         ASSERT(m_ruleData);
         static const unsigned BitsForPositionInRuleData = 18;
-        m_position = ((uint64_t)styleSheetIndex << BitsForPositionInRuleData) + m_ruleData->position();
+        static const unsigned BitsForStyleSheetIndex = 32;
+        m_position = ((uint64_t)cascadeOrder << (BitsForStyleSheetIndex + BitsForPositionInRuleData)) + ((uint64_t)styleSheetIndex << BitsForPositionInRuleData)+ m_ruleData->position();
     }
 
     const RuleData* ruleData() const { return m_ruleData; }
     uint64_t position() const { return m_position; }
     unsigned specificity() const { return ruleData()->specificity() + m_specificity; }
     const CSSStyleSheet* parentStyleSheet() const { return m_parentStyleSheet; }
     DEFINE_INLINE_TRACE()
     {
         visitor->trace(m_parentStyleSheet);
     }
@@ skipping 47 matching lines @@
 
     void setMatchingUARules(bool matchingUARules) { m_matchingUARules = matchingUARules; }
     void setScopeContainsLastMatchedElement(bool scopeContainsLastMatchedElement) { m_scopeContainsLastMatchedElement = scopeContainsLastMatchedElement; }
     bool scopeContainsLastMatchedElement() const { return m_scopeContainsLastMatchedElement; }
     bool hasAnyMatchingRules(RuleSet*);
 
     const MatchResult& matchedResult() const;
     PassRefPtrWillBeRawPtr<StyleRuleList> matchedStyleRuleList();
     PassRefPtrWillBeRawPtr<CSSRuleList> matchedCSSRuleList();
 
-    void collectMatchingRules(const MatchRequest&, bool matchingTreeBoundaryRules = false);
-    void collectMatchingShadowHostRules(const MatchRequest&, bool matchingTreeBoundaryRules = false);
+    void collectMatchingRules(const MatchRequest&, CascadeOrder = ignoreCascadeOrder, bool matchingTreeBoundaryRules = false);
+    void collectMatchingShadowHostRules(const MatchRequest&, CascadeOrder = ignoreCascadeOrder, bool matchingTreeBoundaryRules = false);
     void sortAndTransferMatchedRules();
     void clearMatchedRules();
     void addElementStyleProperties(const StylePropertySet*, bool isCacheable = true);
     void finishAddingUARules() { m_result.finishAddingUARules(); }
     void finishAddingAuthorRulesForTreeScope() { m_result.finishAddingAuthorRulesForTreeScope(); }
 
 private:
     template<typename RuleDataListType>
-    void collectMatchingRulesForList(const RuleDataListType*, const MatchRequest&);
+    void collectMatchingRulesForList(const RuleDataListType*, CascadeOrder, const MatchRequest&);
 
-    void didMatchRule(const RuleData&, const SelectorChecker::MatchResult&, const MatchRequest&);
+    void didMatchRule(const RuleData&, const SelectorChecker::MatchResult&, CascadeOrder, const MatchRequest&);
 
     template<class CSSRuleCollection>
     CSSRule* findStyleRule(CSSRuleCollection*, StyleRule*);
     void appendCSSOMWrapperForRule(CSSStyleSheet*, StyleRule*);
 
     void sortMatchedRules();
 
     StaticCSSRuleList* ensureRuleList();
     StyleRuleList* ensureStyleRuleList();
 
@@ skipping 13 matching lines @@
 
     // Output.
     RefPtrWillBeMember<StaticCSSRuleList> m_cssRuleList;
     RefPtrWillBeMember<StyleRuleList> m_styleRuleList;
     MatchResult m_result;
 };
 
 } // namespace blink
 
 #endif // ElementRuleCollector_h