Update styleRecalc so that it traverses shadow insertion points in 2 pass algorithms

Source/core/dom/shadow/ShadowRoot.h

 /*
  * Copyright (C) 2011 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:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Neither the name of Google Inc. nor the names of its
@@ skipping 76 matching lines @@
     bool containsShadowRoots() const;
 
     unsigned descendantShadowElementCount() const;
 
     // For Internals, don't use this.
     unsigned childShadowRootCount() const;
 
     HTMLShadowElement* shadowInsertionPointOfYoungerShadowRoot() const;
     void setShadowInsertionPointOfYoungerShadowRoot(PassRefPtr<HTMLShadowElement>);
 
+    InsertionPoint* shadowInsertionPoint() const;
+
     void didAddInsertionPoint(InsertionPoint*);
     void didRemoveInsertionPoint(InsertionPoint*);
     const Vector<RefPtr<InsertionPoint> >& descendantInsertionPoints();
 
     ShadowRootType type() const { return static_cast<ShadowRootType>(m_type); }
 
 public:
     Element* activeElement() const;
 
     bool applyAuthorStyles() const { return m_applyAuthorStyles; }
@@ skipping 85 matching lines @@
 
 inline ShadowRoot& toShadowRoot(TreeScope& treeScope)
 {
     ASSERT_WITH_SECURITY_IMPLICATION(treeScope.rootNode() && treeScope.rootNode()->isShadowRoot());
     return static_cast<ShadowRoot&>(treeScope);
 }
 
 } // namespace
 
 #endif