Oilpan: Fix crashes in ~CSSGroupingRule()

Source/core/css/CSSGroupingRule.cpp

 /*
  * Copyright (C) 2011 Adobe Systems Incorporated. All rights reserved.
  * Copyright (C) 2012 Apple Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  *
  * 1. Redistributions of source code must retain the above
  *    copyright notice, this list of conditions and the following
@@ skipping 32 matching lines @@
 
 CSSGroupingRule::CSSGroupingRule(StyleRuleGroup* groupRule, CSSStyleSheet* parent)
     : CSSRule(parent)
     , m_groupRule(groupRule)
     , m_childRuleCSSOMWrappers(groupRule->childRules().size())
 {
 }
 
 CSSGroupingRule::~CSSGroupingRule()
 {
+#if !ENABLE(OILPAN)

[Mads Ager (chromium), 2014/03/04 07:24:04]

We need the same change in CSSKeyframesRule.cpp.

     ASSERT(m_childRuleCSSOMWrappers.size() == m_groupRule->childRules().size());
-#if !ENABLE(OILPAN)
     for (unsigned i = 0; i < m_childRuleCSSOMWrappers.size(); ++i) {
         if (m_childRuleCSSOMWrappers[i])
             m_childRuleCSSOMWrappers[i]->setParentRule(0);
     }
 #endif
 }
 
 unsigned CSSGroupingRule::insertRule(const String& ruleString, unsigned index, ExceptionState& exceptionState)
 {
     ASSERT(m_childRuleCSSOMWrappers.size() == m_groupRule->childRules().size());
@@ skipping 91 matching lines @@
 void CSSGroupingRule::trace(Visitor* visitor)
 {
     CSSRule::trace(visitor);
 #if ENABLE(OILPAN)
     visitor->trace(m_childRuleCSSOMWrappers);
 #endif
     visitor->trace(m_groupRule);
 }
 
 } // namespace WebCore