Page::chrome() should return a reference.

Source/core/rendering/RenderMenuList.cpp

 /*
  * This file is part of the select element renderer in WebCore.
  *
  * Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
  * Copyright (C) 2006, 2007, 2008, 2009, 2010, 2011 Apple Inc. All rights reserved.
  *               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 302 matching lines @@
     m_maxPreferredLogicalWidth += toAdd;
 
     setPreferredLogicalWidthsDirty(false);
 }
 
 void RenderMenuList::showPopup()
 {
     if (m_popupIsVisible)
         return;
 
-    if (document()->page()->chrome()->hasOpenedPopup())
+    if (document()->page()->chrome().hasOpenedPopup())
         return;
 
     // Create m_innerBlock here so it ends up as the first child.
     // This is important because otherwise we might try to create m_innerBlock
     // inside the showPopup call and it would fail.
     createInnerBlock();
     if (!m_popup)
-        m_popup = document()->page()->chrome()->createPopupMenu(*document()->frame(), this);
+        m_popup = document()->page()->chrome().createPopupMenu(*document()->frame(), this);
     m_popupIsVisible = true;
 
     FloatQuad quad(localToAbsoluteQuad(FloatQuad(borderBoundingBox())));
     IntSize size = pixelSnappedIntRect(frameRect()).size();
     HTMLSelectElement* select = selectElement();
     m_popup->show(quad, size, select->optionToListIndex(select->selectedIndex()));
 }
 
 void RenderMenuList::hidePopup()
 {
@@ skipping 264 matching lines @@
 {
     setTextFromOption(selectElement()->listToOptionIndex(listIndex));
 }
 
 FontSelector* RenderMenuList::fontSelector() const
 {
     return document()->styleResolver()->fontSelector();
 }
 
 }