Remove tons of OILPAN.

sky/engine/core/css/CSSStyleSheet.cpp

Index: sky/engine/core/css/CSSStyleSheet.cpp
diff --git a/sky/engine/core/css/CSSStyleSheet.cpp b/sky/engine/core/css/CSSStyleSheet.cpp
index 5cc8e87701988b87d2b853edaf162a7a779c025f..a4d700b22ed963d771fa38b35b690137769a1c3c 100644
--- a/sky/engine/core/css/CSSStyleSheet.cpp
+++ b/sky/engine/core/css/CSSStyleSheet.cpp
@@ -45,12 +45,6 @@ public:
         return adoptPtr(new StyleSheetCSSRuleList(sheet));
     }
 
-    virtual void trace(Visitor* visitor) override
-    {
-        visitor->trace(m_styleSheet);
-        CSSRuleList::trace(visitor);
-    }
-
 private:
     StyleSheetCSSRuleList(CSSStyleSheet* sheet) : m_styleSheet(sheet) { }
 
@@ -347,15 +341,4 @@ void CSSStyleSheet::clearChildRuleCSSOMWrappers()
     m_childRuleCSSOMWrappers.clear();
 }
 
-void CSSStyleSheet::trace(Visitor* visitor)
-{
-    visitor->trace(m_contents);
-    visitor->trace(m_mediaQueries);
-    visitor->trace(m_ownerNode);
-    visitor->trace(m_mediaCSSOMWrapper);
-    visitor->trace(m_childRuleCSSOMWrappers);
-    visitor->trace(m_ruleListCSSOMWrapper);
-    StyleSheet::trace(visitor);
-}
-
 } // namespace blink