Oilpan: promptly dispose style resolvers upon clearing.

third_party/WebKit/Source/core/css/RuleSet.h

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  * Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 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 101 matching lines @@
 struct SameSizeAsRuleData {
     DISALLOW_ALLOCATION();
     void* a;
     unsigned b;
     unsigned c;
     unsigned d[4];
 };
 
 static_assert(sizeof(RuleData) == sizeof(SameSizeAsRuleData), "RuleData should stay small");
 
-class CORE_EXPORT RuleSet : public NoBaseWillBeGarbageCollectedFinalized<RuleSet> {
+class CORE_EXPORT RuleSet final : public NoBaseWillBeGarbageCollectedFinalized<RuleSet> {
     WTF_MAKE_NONCOPYABLE(RuleSet);
     WTF_MAKE_FAST_ALLOCATED_WILL_BE_REMOVED(RuleSet);
 public:
-    static PassOwnPtrWillBeRawPtr<RuleSet> create() { return adoptPtrWillBeNoop(new RuleSet); }
+    static PassOwnPtrWillBeRawPtr<RuleSet> create()
+    {
+        return adoptPtrWillBeNoop(new RuleSet);
+    }
+    ~RuleSet();
+#if ENABLE(OILPAN)
+    void dispose();
+#endif
 
     void addRulesFromSheet(StyleSheetContents*, const MediaQueryEvaluator&, AddRuleFlags = RuleHasNoSpecialState);
     void addStyleRule(StyleRule*, AddRuleFlags);
     void addRule(StyleRule*, unsigned selectorIndex, AddRuleFlags);
 
     const RuleFeatureSet& features() const { return m_features; }
 
     const WillBeHeapTerminatedArray<RuleData>* idRules(const AtomicString& key) const { ASSERT(!m_pendingRules); return m_idRules.get(key); }
     const WillBeHeapTerminatedArray<RuleData>* classRules(const AtomicString& key) const { ASSERT(!m_pendingRules); return m_classRules.get(key); }
     const WillBeHeapTerminatedArray<RuleData>* tagRules(const AtomicString& key) const { ASSERT(!m_pendingRules); return m_tagRules.get(key); }
@@ skipping 95 matching lines @@
     WillBeHeapVector<RuleData> m_allRules;
 #endif
 };
 
 } // namespace blink
 
 WTF_ALLOW_MOVE_AND_INIT_WITH_MEM_FUNCTIONS(blink::RuleData);
 WTF_ALLOW_MOVE_AND_INIT_WITH_MEM_FUNCTIONS(blink::MinimalRuleData);
 
 #endif // RuleSet_h