Remove tons of OILPAN.

sky/engine/core/dom/NodeRareData.h

Index: sky/engine/core/dom/NodeRareData.h
diff --git a/sky/engine/core/dom/NodeRareData.h b/sky/engine/core/dom/NodeRareData.h
index 3f34fc28b6b0fd281c76c481ecb15ad4fdef39f7..725261c3280ecea48b60959f654b0bf022f12676 100644
--- a/sky/engine/core/dom/NodeRareData.h
+++ b/sky/engine/core/dom/NodeRareData.h
@@ -43,14 +43,6 @@ public:
         return adoptPtr(new NodeMutationObserverData);
     }
 
-    void trace(Visitor* visitor)
-    {
-#if ENABLE(OILPAN)
-        visitor->trace(registry);
-        visitor->trace(transientRegistry);
-#endif
-    }
-
 private:
     NodeMutationObserverData() { }
 };
@@ -76,11 +68,6 @@ public:
     void setElementFlag(ElementFlags mask, bool value) { m_elementFlags = (m_elementFlags & ~mask) | (-(int32_t)value & mask); }
     void clearElementFlag(ElementFlags mask) { m_elementFlags &= ~mask; }
 
-    void trace(Visitor*);
-
-    void traceAfterDispatch(Visitor*);
-    void finalizeGarbageCollectedObject();
-
 protected:
     explicit NodeRareData(RenderObject* renderer)
         : NodeRareDataBase(renderer)