Return refererence from InlineBox::root()

Source/core/dom/ContainerNode.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 Apple Inc. All rights reserved.
  *
  * 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
  * version 2 of the License, or (at your option) any later version.
@@ skipping 693 matching lines @@
         if (!o->isInline() || o->isReplaced()) {
             point = o->localToAbsolute(FloatPoint(), UseTransforms);
             return true;
         }
 
         if (p->node() && p->node() == this && o->isText() && !o->isBR() && !toRenderText(o)->firstTextBox()) {
             // do nothing - skip unrendered whitespace that is a child or next sibling of the anchor
         } else if ((o->isText() && !o->isBR()) || o->isReplaced()) {
             point = FloatPoint();
             if (o->isText() && toRenderText(o)->firstTextBox()) {
-                point.move(toRenderText(o)->linesBoundingBox().x(), toRenderText(o)->firstTextBox()->root()->lineTop());
+                point.move(toRenderText(o)->linesBoundingBox().x(), toRenderText(o)->firstTextBox()->root().lineTop());
             } else if (o->isBox()) {
                 RenderBox* box = toRenderBox(o);
                 point.moveBy(box->location());
             }
             point = o->container()->localToAbsolute(point, UseTransforms);
             return true;
         }
     }
 
     // If the target doesn't have any children or siblings that could be used to calculate the scroll position, we must be
@@ skipping 321 matching lines @@
         return true;
 
     if (node->isElementNode() && toElement(node)->shadow())
         return true;
 
     return false;
 }
 #endif
 
 } // namespace WebCore