Revert 162247 "Revert 162180 "[Refactoring] Remove include "core..."

trunk/Source/core/dom/Node.h

Index: trunk/Source/core/dom/Node.h
===================================================================
--- trunk/Source/core/dom/Node.h	(revision 162247)
+++ trunk/Source/core/dom/Node.h	(working copy)
@@ -916,6 +916,16 @@
     return change >= Inherit || node->childNeedsStyleRecalc() || node->needsStyleRecalc();
 }
 
+inline bool isTreeScopeRoot(const Node* node)
+{
+    return !node || node->isDocumentNode() || node->isShadowRoot();
+}
+
+inline bool isTreeScopeRoot(const Node& node)
+{
+    return node.isDocumentNode() || node.isShadowRoot();
+}
+
 // Allow equality comparisons of Nodes by reference or pointer, interchangeably.
 inline bool operator==(const Node& a, const Node& b) { return &a == &b; }
 inline bool operator==(const Node& a, const Node* b) { return &a == b; }