Add Node::isInDocumentTree()

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
  * License as published by the Free Software Foundation; either
@@ skipping 462 matching lines @@
         DCHECK(isInTreeScope());
         return *m_treeScope;
     }
 
     bool inActiveDocument() const;
 
     // Returns true if this node is connected to a document, false otherwise.
     // See https://dom.spec.whatwg.org/#connected for the definition.
     bool isConnected() const { return getFlag(IsConnectedFlag); }
 
+    bool isInDocumentTree() const { return isConnected() && !isInShadowTree(); }
     bool isInShadowTree() const { return getFlag(IsInShadowTreeFlag); }
     bool isInTreeScope() const { return getFlag(static_cast<NodeFlags>(IsConnectedFlag | IsInShadowTreeFlag)); }
 
     ElementShadow* parentElementShadow() const;
     bool isInV1ShadowTree() const;
     bool isInV0ShadowTree() const;
     bool isChildOfV1ShadowHost() const;
     bool isChildOfV0ShadowHost() const;
     ShadowRoot* v1ShadowRootOfParent() const;
 
@@ skipping 427 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