[Refactoring] Remove include "core/inspector/InspectorInstrumentation.h" from SelectorChecker.h

Source/core/dom/Node.h

Index: Source/core/dom/Node.h
diff --git a/Source/core/dom/Node.h b/Source/core/dom/Node.h
index ce640b4aed7c0107c9099dcd0517d0ac70177769..80501b0d12ae1841fd881158d2a421bddeebf534 100644
--- a/Source/core/dom/Node.h
+++ b/Source/core/dom/Node.h
@@ -912,6 +912,16 @@ inline bool shouldRecalcStyle(StyleRecalcChange change, const Node* node)
     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; }