Rename renderer() to layoutObject().

Source/core/html/HTMLDetailsElement.cpp

 /*
  * Copyright (C) 2010, 2011 Nokia Corporation and/or its subsidiary(-ies)
  *
  * 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.
  *
  * This library is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
@@ skipping 117 matching lines @@
             content->removeInlineStyleProperty(CSSPropertyDisplay);
         else
             content->setInlineStyleProperty(CSSPropertyDisplay, CSSValueNone);
 
         // Invalidate the LayoutDetailsMarker in order to turn the arrow signifying if the
         // details element is open or closed.
         Element* summary = findMainSummary();
         ASSERT(summary);
 
         Element* control = toHTMLSummaryElement(summary)->markerControl();
-        if (control && control->renderer())
-            control->renderer()->setShouldDoFullPaintInvalidation();
+        if (control && control->layoutObject())
+            control->layoutObject()->setShouldDoFullPaintInvalidation();
 
         return;
     }
     HTMLElement::parseAttribute(name, value);
 }
 
 void HTMLDetailsElement::toggleOpen()
 {
     setAttribute(openAttr, m_isOpen ? nullAtom : emptyAtom);
 }
 
 bool HTMLDetailsElement::isInteractiveContent() const
 {
     return true;
 }
 
 }