Make ScriptStreamer and dependents Oilpan friendly.

Source/bindings/core/v8/WorkerScriptDebugServer.cpp

Index: Source/bindings/core/v8/WorkerScriptDebugServer.cpp
diff --git a/Source/bindings/core/v8/WorkerScriptDebugServer.cpp b/Source/bindings/core/v8/WorkerScriptDebugServer.cpp
index 006fb8fd7ef24a4f09bc63bcdb10e1f45b201250..90bdbda26a8d88e7f9fd8a7fef6184f80739916a 100644
--- a/Source/bindings/core/v8/WorkerScriptDebugServer.cpp
+++ b/Source/bindings/core/v8/WorkerScriptDebugServer.cpp
@@ -39,7 +39,6 @@
 #include "wtf/MessageQueue.h"
 #include <v8.h>
 
-
 namespace blink {
 
 WorkerScriptDebugServer::WorkerScriptDebugServer(WorkerGlobalScope* workerGlobalScope)
@@ -50,6 +49,12 @@ WorkerScriptDebugServer::WorkerScriptDebugServer(WorkerGlobalScope* workerGlobal
     ASSERT(m_isolate);
 }
 
+void WorkerScriptDebugServer::trace(Visitor* visitor)
+{
+    visitor->trace(m_workerGlobalScope);
+    ScriptDebugServer::trace(visitor);
+}
+
 void WorkerScriptDebugServer::addListener(ScriptDebugListener* listener)
 {
     v8::HandleScope scope(m_isolate);