Setup parent stylesheet for tree boundary crossing rules.

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 51a21ea71ccca0c2818a4acc2cd78c3d0e8235ac..40e707b64b14da8ec4d1e8f942a5c7dd8dbe9dc1 100644
--- a/Source/core/css/resolver/StyleResolver.h
+++ b/Source/core/css/resolver/StyleResolver.h
@@ -142,8 +142,7 @@ public:
     void resetAuthorStyle(const ContainerNode*);
     void finishAppendAuthorStyleSheets();
 
-    TreeBoundaryCrossingRules& treeBoundaryCrossingRules() { return m_treeBoundaryCrossingRules; }
-    void processScopedRules(const RuleSet& authorRules, const KURL&, ContainerNode* scope = 0);
+    void processScopedRules(const RuleSet& authorRules, CSSStyleSheet*, ContainerNode* scope = 0);
 
     void lazyAppendAuthorStyleSheets(unsigned firstNew, const WillBeHeapVector<RefPtrWillBeMember<CSSStyleSheet> >&);
     void removePendingAuthorStyleSheets(const WillBeHeapVector<RefPtrWillBeMember<CSSStyleSheet> >&);
@@ -237,7 +236,7 @@ private:
 private:
     void initWatchedSelectorRules(const WillBeHeapVector<RefPtrWillBeMember<StyleRule> >& watchedSelectors);
 
-    void addTreeBoundaryCrossingRules(const WillBeHeapVector<MinimalRuleData>&, ContainerNode* scope);
+    void addTreeBoundaryCrossingRules(const WillBeHeapVector<MinimalRuleData>&, ContainerNode* scope, CSSStyleSheet* parentStyleSheet);
 
     // FIXME: This should probably go away, folded into FontBuilder.
     void updateFont(StyleResolverState&);