Use stream printers in showNodePath() and Node::showTreeForThisAcrossFrame() implementations.

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 555 matching lines @@
     virtual void removedFrom(ContainerNode* insertionPoint);
 
     // FIXME(dominicc): This method is not debug-only--it is used by
     // Tracing--rename it to something indicative.
     String debugName() const;
 
 #ifndef NDEBUG
     void showNode(const char* prefix = "") const;
     void showTreeForThis() const;
     void showTreeForThisInFlatTree() const;
-    void showNodePathForThis() const;
+    void printNodePathTo(std::ostream&) const;
     void showTreeAndMark(const Node* markedNode1, const char* markedLabel1, const Node* markedNode2 = nullptr, const char* markedLabel2 = nullptr) const;
     void showTreeAndMarkInFlatTree(const Node* markedNode1, const char* markedLabel1, const Node* markedNode2 = nullptr, const char* markedLabel2 = nullptr) const;
     void showTreeForThisAcrossFrame() const;
 #endif
 
     NodeListsNodeData* nodeLists();
     void clearNodeLists();
 
     virtual bool willRespondToMouseMoveEvents();
     virtual bool willRespondToMouseClickEvents();
@@ skipping 298 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