Share recalcChildStyle between Element and ShadowRoot.

Source/core/dom/ContainerNode.h

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2001 Dirk Mueller (mueller@kde.org)
  * Copyright (C) 2004, 2005, 2006, 2007, 2009, 2010, 2011, 2013 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.
@@ skipping 130 matching lines @@
     void setChildrenAffectedByForwardPositionalRules() { setRestyleFlag(ChildrenAffectedByForwardPositionalRules); }
 
     bool childrenAffectedByBackwardPositionalRules() const { return hasRestyleFlag(ChildrenAffectedByBackwardPositionalRules); }
     void setChildrenAffectedByBackwardPositionalRules() { setRestyleFlag(ChildrenAffectedByBackwardPositionalRules); }
 
     // FIXME: These methods should all be renamed to something better than "check",
     // since it's not clear that they alter the style bits of siblings and children.
     void checkForChildrenAdjacentRuleChanges();
     enum SiblingCheckType { FinishedParsingChildren, SiblingElementInserted, SiblingElementRemoved };
     void checkForSiblingStyleChanges(SiblingCheckType, Node* nodeBeforeChange, Node* nodeAfterChange);
+    void recalcChildStyle(StyleRecalcChange);
 
     bool childrenSupportStyleSharing() const { return !hasRestyleFlags(); }
 
     // -----------------------------------------------------------------------------
     // Notification of document structure changes (see core/dom/Node.h for more notification methods)
 
     enum ChildrenChangeType { ElementInserted, NonElementInserted, ElementRemoved, NonElementRemoved, AllChildrenRemoved, TextChanged };
     enum ChildrenChangeSource { ChildrenChangeSourceAPI, ChildrenChangeSourceParser };
     struct ChildrenChange {
         STACK_ALLOCATED();
@@ skipping 180 matching lines @@
 inline void getChildNodes(ContainerNode& node, NodeVector& nodes)
 {
     ASSERT(!nodes.size());
     for (Node* child = node.firstChild(); child; child = child->nextSibling())
         nodes.append(child);
 }
 
 } // namespace blink
 
 #endif // ContainerNode_h