Remove tons of OILPAN.

sky/engine/core/css/resolver/MatchedPropertiesCache.h

Index: sky/engine/core/css/resolver/MatchedPropertiesCache.h
diff --git a/sky/engine/core/css/resolver/MatchedPropertiesCache.h b/sky/engine/core/css/resolver/MatchedPropertiesCache.h
index d5913628f8d28540f271994590a9ffe77b1966ff..4d3f59aa3e39850505d82418ef36bcada8d680fa 100644
--- a/sky/engine/core/css/resolver/MatchedPropertiesCache.h
+++ b/sky/engine/core/css/resolver/MatchedPropertiesCache.h
@@ -46,7 +46,6 @@ public:
 
     void set(const RenderStyle*, const RenderStyle* parentStyle, const MatchResult&);
     void clear();
-    void trace(Visitor* visitor) { visitor->trace(matchedProperties); }
 };
 
 class MatchedPropertiesCache {
@@ -63,8 +62,6 @@ public:
 
     static bool isCacheable(const Element*, const RenderStyle*, const RenderStyle* parentStyle);
 
-    void trace(Visitor*);
-
 private:
     // Every N additions to the matched declaration cache trigger a sweep where entries holding
     // the last reference to a style declaration are garbage collected.