Make ElementShadow::oldestShadowRoot() return a reference

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

 /*
  * 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, 2005, 2006, 2007, 2008, 2009, 2010, 2011 Apple Inc. All rights reserved.
  * Copyright (C) 2008 Nokia Corporation and/or its subsidiary(-ies)
  * Copyright (C) 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 562 matching lines @@
         return LayoutRect(layoutObject()->absoluteBoundingBoxRect());
     return LayoutRect();
 }
 
 #ifndef NDEBUG
 inline static ShadowRoot* oldestShadowRootFor(const Node* node)
 {
     if (!node->isElementNode())
         return nullptr;
     if (ElementShadow* shadow = toElement(node)->shadow())
-        return shadow->oldestShadowRoot();
+        return &shadow->oldestShadowRoot();
     return nullptr;
 }
 #endif
 
 Node& Node::shadowIncludingRoot() const
 {
     if (isConnected())
         return document();
     Node* root = const_cast<Node*>(this);
     while (Node* host = root->shadowHost())
@@ skipping 1817 matching lines @@
     if (node) {
         std::stringstream stream;
         node->printNodePathTo(stream);
         LOG(INFO) << stream.str();
     } else {
         LOG(INFO) << "Cannot showNodePath for <null>";
     }
 }
 
 #endif