Make RenderObject::style() return a const object

Source/core/rendering/RenderQuote.cpp

 /**
  * Copyright (C) 2011 Nokia Inc.  All rights reserved.
  * Copyright (C) 2012 Google 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.
  *
  * This library is distributed in the hope that it will be useful,
@@ skipping 254 matching lines @@
 void RenderQuote::updateText()
 {
     String text = computeText();
     if (m_text == text)
         return;
 
     m_text = text;
 
     RenderTextFragment* fragment = findFragmentChild();
     if (fragment) {
-        fragment->setStyle(style());
+        fragment->setStyle(deprecatedMutableStyle());
         fragment->setContentString(m_text.impl());
     } else {
         fragment = new RenderTextFragment(&document(), m_text.impl());
-        fragment->setStyle(style());
+        fragment->setStyle(deprecatedMutableStyle());
         addChild(fragment);
     }
 }
 
 RenderTextFragment* RenderQuote::findFragmentChild() const
 {
     // We walk from the end of the child list because, if we've had a first-letter
     // renderer inserted then the remaining text will be at the end.
     while (RenderObject* child = lastChild()) {
         if (child->isText() && toRenderText(child)->isTextFragment())
@@ skipping 116 matching lines @@
             if (m_depth)
                 m_depth--;
             break;
         }
     }
     if (oldDepth != m_depth)
         updateText();
 }
 
 } // namespace blink