Remove tons of OILPAN.

sky/engine/core/css/CSSBasicShapes.h

Index: sky/engine/core/css/CSSBasicShapes.h
diff --git a/sky/engine/core/css/CSSBasicShapes.h b/sky/engine/core/css/CSSBasicShapes.h
index 4f395a959df3050197302c4f0356d11196ecc83e..0d50c5ea892eae41398b6b08f79f6c453f15e626 100644
--- a/sky/engine/core/css/CSSBasicShapes.h
+++ b/sky/engine/core/css/CSSBasicShapes.h
@@ -55,8 +55,6 @@ public:
     CSSPrimitiveValue* referenceBox() const { return m_referenceBox.get(); }
     void setReferenceBox(PassRefPtr<CSSPrimitiveValue> referenceBox) { m_referenceBox = referenceBox; }
 
-    virtual void trace(Visitor* visitor) { visitor->trace(m_referenceBox); }
-
 protected:
     CSSBasicShape() { }
     RefPtr<CSSPrimitiveValue> m_referenceBox;
@@ -78,8 +76,6 @@ public:
     void setCenterY(PassRefPtr<CSSPrimitiveValue> centerY) { m_centerY = centerY; }
     void setRadius(PassRefPtr<CSSPrimitiveValue> radius) { m_radius = radius; }
 
-    virtual void trace(Visitor*);
-
 private:
     CSSBasicShapeCircle() { }
 
@@ -106,8 +102,6 @@ public:
     void setRadiusX(PassRefPtr<CSSPrimitiveValue> radiusX) { m_radiusX = radiusX; }
     void setRadiusY(PassRefPtr<CSSPrimitiveValue> radiusY) { m_radiusY = radiusY; }
 
-    virtual void trace(Visitor*);
-
 private:
     CSSBasicShapeEllipse() { }
 
@@ -138,8 +132,6 @@ public:
     virtual String cssText() const override;
     virtual bool equals(const CSSBasicShape&) const override;
 
-    virtual void trace(Visitor*);
-
 private:
     CSSBasicShapePolygon()
         : m_windRule(RULE_NONZERO)
@@ -202,8 +194,6 @@ public:
     virtual String cssText() const override;
     virtual bool equals(const CSSBasicShape&) const override;
 
-    virtual void trace(Visitor*);
-
 private:
     CSSBasicShapeInset() { }