Start moving tree-boundary-crossing rules to ScopedStyleResolver.

Source/core/css/resolver/StyleResolver.h

Index: Source/core/css/resolver/StyleResolver.h
diff --git a/Source/core/css/resolver/StyleResolver.h b/Source/core/css/resolver/StyleResolver.h
index 7e0d8852c27f4735782bc59bb928e75c34f5e621..1c8d3255367a32fb13f1e7b56b9cd041dedb85ae 100644
--- a/Source/core/css/resolver/StyleResolver.h
+++ b/Source/core/css/resolver/StyleResolver.h
@@ -200,6 +200,8 @@ public:
 
     void trace(Visitor*);
 
+    void addTreeBoundaryCrossingScope(ContainerNode& scope);
+
 private:
     void initWatchedSelectorRules(const WillBeHeapVector<RefPtrWillBeMember<StyleRule> >& watchedSelectors);
 
@@ -211,7 +213,6 @@ private:
 
     void appendCSSStyleSheet(CSSStyleSheet&);
     void addRulesFromSheet(CSSStyleSheet&, TreeScope*, unsigned);
-    void processScopedRules(const RuleSet& authorRules, CSSStyleSheet*, unsigned sheetIndex, ContainerNode& scope);
 
     void collectPseudoRulesForElement(Element*, ElementRuleCollector&, PseudoId, unsigned rulesToInclude);
     void matchRuleSet(ElementRuleCollector&, RuleSet*);