[oilpan] Make the oilpan branch build on Mac.

Source/core/css/MediaList.cpp

 /*
  * (C) 1999-2003 Lars Knoll (knoll@kde.org)
  * Copyright (C) 2004, 2006, 2010, 2012 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.
  *
  * This library is distributed in the hope that it will be useful,
@@ skipping 214 matching lines @@
 {
     MemoryClassInfo info(memoryObjectInfo, this, WebCoreMemoryTypes::CSS);
     info.addMember(m_queries, "queries");
 }
 
 DEFINE_GC_TYPE_MARKER(MediaList);
 
 MediaList::MediaList(const Handle<MediaQuerySet>& mediaQueries, const Handle<CSSStyleSheet>& parentSheet)
     : m_mediaQueries(mediaQueries)
     , m_parentStyleSheet(parentSheet)
-    , m_parentRule(0)
 {
 }
 
 MediaList::MediaList(const Handle<MediaQuerySet>& mediaQueries, const Handle<CSSRule>& parentRule)
     : m_mediaQueries(mediaQueries)
-    , m_parentStyleSheet(0)
     , m_parentRule(parentRule)
 {
 }
 
 MediaList::~MediaList()
 {
 }
 
 void MediaList::setMediaText(const String& value, ExceptionCode& ec)
 {
@@ skipping 115 matching lines @@
                             addResolutionWarningMessageToConsole(document, mediaQuerySet->mediaText(), primitiveValue);
                     }
                 }
             }
         }
     }
 }
 #endif
 
 }