Remove isTreeScopeRoot.

third_party/WebKit/Source/core/dom/Node.h

Index: third_party/WebKit/Source/core/dom/Node.h
diff --git a/third_party/WebKit/Source/core/dom/Node.h b/third_party/WebKit/Source/core/dom/Node.h
index 26d31c6539877182b023e06bb389872ba5388499..ef5f04f2111c970b905aba0db95d3a8400fd8465 100644
--- a/third_party/WebKit/Source/core/dom/Node.h
+++ b/third_party/WebKit/Source/core/dom/Node.h
@@ -974,14 +974,6 @@ inline bool Node::shouldCallRecalcStyle(StyleRecalcChange change) {
          childNeedsStyleRecalc();
 }
 
-inline bool isTreeScopeRoot(const Node* node) {
-  return !node || node->isDocumentNode() || node->isShadowRoot();
-}
-
-inline bool isTreeScopeRoot(const Node& node) {
-  return node.isDocumentNode() || node.isShadowRoot();
-}
-
 // See the comment at the declaration of ScriptWrappable::fromNode in
 // bindings/core/v8/ScriptWrappable.h about why this method is defined here.
 inline ScriptWrappable* ScriptWrappable::fromNode(Node* node) {