Remove isTreeScopeRoot.

third_party/WebKit/Source/core/dom/Node.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) 2004-2011, 2014 Apple Inc. All rights reserved.
  * Copyright (C) 2008, 2009 Torch Mobile Inc. All rights reserved.
  * (http://www.torchmobile.com/)
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
@@ skipping 956 matching lines @@
 
   detachLayoutTree(context);
   markAncestorsWithChildNeedsStyleRecalc();
 }
 
 inline bool Node::shouldCallRecalcStyle(StyleRecalcChange change) {
   return change >= IndependentInherit || needsStyleRecalc() ||
          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) {
   return node;
 }
 
 // Allow equality comparisons of Nodes by reference or pointer, interchangeably.
 DEFINE_COMPARISON_OPERATORS_WITH_REFERENCES(Node)
 
 #define DEFINE_NODE_TYPE_CASTS(thisType, predicate) \
@@ skipping 14 matching lines @@
 }  // namespace blink
 
 #ifndef NDEBUG
 // Outside the WebCore namespace for ease of invocation from gdb.
 void showNode(const blink::Node*);
 void showTree(const blink::Node*);
 void showNodePath(const blink::Node*);
 #endif
 
 #endif  // Node_h