Oilpan: Remove GC_INFO_{DEFINE,DECLARE} macros

Source/core/css/StyleSheetContents.cpp

 /*
  * (C) 1999-2003 Lars Knoll (knoll@kde.org)
  * Copyright (C) 2004, 2006, 2007, 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 20 matching lines @@
 #include "core/dom/Node.h"
 #include "core/dom/StyleEngine.h"
 #include "core/fetch/CSSStyleSheetResource.h"
 #include "core/frame/UseCounter.h"
 #include "platform/TraceEvent.h"
 #include "platform/weborigin/SecurityOrigin.h"
 #include "wtf/Deque.h"
 
 namespace WebCore {
 
-DEFINE_GC_INFO(StyleSheetContents);
-
 // Rough size estimate for the memory cache.
 unsigned StyleSheetContents::estimatedSizeInBytes() const
 {
     // Note that this does not take into account size of the strings hanging from various objects.
     // The assumption is that nearly all of of them are atomic and would exist anyway.
     unsigned size = sizeof(*this);
 
     // FIXME: This ignores the children of media rules.
     // Most rules are StyleRules.
     size += ruleCount() * StyleRule::averageSizeInBytes();
@@ skipping 562 matching lines @@
     findFontFaceRulesFromRules(childRules(), fontFaceRules);
 }
 
 void StyleSheetContents::trace(Visitor* visitor)
 {
     visitor->trace(m_importRules);
     visitor->trace(m_childRules);
 }
 
 }