Oilpan: make Supplementable tracing more regular.

Source/core/workers/WorkerClients.h

Index: Source/core/workers/WorkerClients.h
diff --git a/Source/core/workers/WorkerClients.h b/Source/core/workers/WorkerClients.h
index cf1e3f8895a74be9168b249661fa019f71874414..e4e2688c5ed63b2cb334158eae76a78052d790b3 100644
--- a/Source/core/workers/WorkerClients.h
+++ b/Source/core/workers/WorkerClients.h
@@ -50,10 +50,12 @@ public:
 
     virtual ~WorkerClients() { }
 
+#if ENABLE(OILPAN)

[haraken, 2014/09/23 02:33:46]

We normally add #if to inside the trace method.

[sof, 2014/09/23 05:21:07]

Yes, the reason for not doing so here is to avoid compiler confusion over
OVERRIDE; trace() is only overridden with Oilpan enabled.

     virtual void trace(Visitor* visitor) OVERRIDE
     {
-        WillBeHeapSupplementable<WorkerClients>::trace(visitor);
+        HeapSupplementable<WorkerClients>::trace(visitor);
     }
+#endif
 
 private:
     WorkerClients() { }