Start moving tree-boundary-crossing rules to ScopedStyleResolver.

Source/core/css/resolver/ScopedStyleResolver.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.
  * Copyright (C) 2012 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:
  * 1.  Redistributions of source code must retain the above copyright
  *     notice, this list of conditions and the following disclaimer.
@@ skipping 38 matching lines @@
     static PassOwnPtrWillBeRawPtr<ScopedStyleResolver> create(TreeScope& scope)
     {
         return adoptPtrWillBeNoop(new ScopedStyleResolver(scope));
     }
 
     static TreeScope* treeScopeFor(Document&, const CSSStyleSheet*);
 
     const TreeScope& treeScope() const { return *m_scope; }
     ScopedStyleResolver* parent() const;
 
-public:
     StyleRuleKeyframes* keyframeStylesForAnimation(const StringImpl* animationName);
-    void addKeyframeStyle(PassRefPtrWillBeRawPtr<StyleRuleKeyframes>);
 
-    unsigned appendCSSStyleSheet(CSSStyleSheet*);
+    void appendCSSStyleSheet(CSSStyleSheet&, const MediaQueryEvaluator&);
     void collectMatchingAuthorRules(ElementRuleCollector&, bool includeEmptyRules, CascadeOrder = ignoreCascadeOrder);
     void collectMatchingShadowHostRules(ElementRuleCollector&, bool includeEmptyRules, CascadeOrder = ignoreCascadeOrder);
+    void collectMatchingTreeBoundaryCrossingRules(ElementRuleCollector&, bool includeEmptyRules, CascadeOrder);
     void matchPageRules(PageRuleCollector&);
     void collectFeaturesTo(RuleFeatureSet&, HashSet<const StyleSheetContents*>& visitedSharedStyleSheetContents) const;
     void resetAuthorStyle();
     void collectViewportRulesTo(StyleResolver*) const;
 
     void trace(Visitor*);
 
 private:
     explicit ScopedStyleResolver(TreeScope& scope)
         : m_scope(scope)
     {
     }
 
+    void addTreeBoundaryCrossingRules(const RuleSet&, CSSStyleSheet*, unsigned sheetIndex);
+    void addKeyframeRules(const RuleSet&);
+    void addFontFaceRules(const RuleSet&);
+    void addKeyframeStyle(PassRefPtrWillBeRawPtr<StyleRuleKeyframes>);
+
     RawPtrWillBeMember<TreeScope> m_scope;
 
-    WillBeHeapVector<RawPtrWillBeMember<CSSStyleSheet> > m_authorStyleSheets;
+    WillBeHeapVector<RawPtrWillBeMember<CSSStyleSheet>> m_authorStyleSheets;
 
-    typedef WillBeHeapHashMap<const StringImpl*, RefPtrWillBeMember<StyleRuleKeyframes> > KeyframesRuleMap;
+    typedef WillBeHeapHashMap<const StringImpl*, RefPtrWillBeMember<StyleRuleKeyframes>> KeyframesRuleMap;
     KeyframesRuleMap m_keyframesRuleMap;
+
+    class RuleSubSet final : public NoBaseWillBeGarbageCollected<RuleSubSet> {
+    public:
+        static PassOwnPtrWillBeRawPtr<RuleSubSet> create(CSSStyleSheet* sheet, unsigned index, PassOwnPtrWillBeRawPtr<RuleSet> rules)
+        {
+            return adoptPtrWillBeNoop(new RuleSubSet(sheet, index, rules));
+        }
+
+        CSSStyleSheet* m_parentStyleSheet;
+        unsigned m_parentIndex;
+        OwnPtrWillBeMember<RuleSet> m_ruleSet;
+
+        void trace(Visitor*);
+
+    private:
+        RuleSubSet(CSSStyleSheet* sheet, unsigned index, PassOwnPtrWillBeRawPtr<RuleSet> rules)
+            : m_parentStyleSheet(sheet)
+            , m_parentIndex(index)
+            , m_ruleSet(rules)
+        {
+        }
+    };
+    typedef WillBeHeapVector<OwnPtrWillBeMember<RuleSubSet>> CSSStyleSheetRuleSubSet;
+
+    OwnPtrWillBeMember<CSSStyleSheetRuleSubSet> m_treeBoundaryCrossingRuleSet;
 };
 
 } // namespace blink
 
 #endif // ScopedStyleResolver_h