Hollow out more of the tracing system in oilpan

sky/engine/bindings/core/v8/ScriptPromiseProperty.h

Index: sky/engine/bindings/core/v8/ScriptPromiseProperty.h
diff --git a/sky/engine/bindings/core/v8/ScriptPromiseProperty.h b/sky/engine/bindings/core/v8/ScriptPromiseProperty.h
index 3997a0ba995a0b505bdc1daa4544ffe15cb70082..6a503bc44152eaf21103fb9ec0332df38fafc8e1 100644
--- a/sky/engine/bindings/core/v8/ScriptPromiseProperty.h
+++ b/sky/engine/bindings/core/v8/ScriptPromiseProperty.h
@@ -68,8 +68,6 @@ public:
     // This method keeps the holder object and the property name.
     void reset();
 
-    virtual void trace(Visitor*) override;
-
 private:
     virtual v8::Handle<v8::Object> holder(v8::Handle<v8::Object> creationContext, v8::Isolate*) override;
     virtual v8::Handle<v8::Value> resolvedValue(v8::Handle<v8::Object> creationContext, v8::Isolate*) override;
@@ -145,15 +143,6 @@ void ScriptPromiseProperty<HolderType, ResolvedType, RejectedType>::reset()
     m_rejected = RejectedType();
 }
 
-template<typename HolderType, typename ResolvedType, typename RejectedType>
-void ScriptPromiseProperty<HolderType, ResolvedType, RejectedType>::trace(Visitor* visitor)
-{
-    TraceIfNeeded<HolderType>::trace(visitor, &m_holder);
-    TraceIfNeeded<ResolvedType>::trace(visitor, &m_resolved);
-    TraceIfNeeded<RejectedType>::trace(visitor, &m_rejected);
-    ScriptPromisePropertyBase::trace(visitor);
-}
-
 } // namespace blink
 
 #endif // ScriptPromiseProperty_h