Tried using CrossThreadPersistent for workerDebuggerAgents

Source/core/inspector/PageConsoleAgent.h

Index: Source/core/inspector/PageConsoleAgent.h
diff --git a/Source/core/inspector/PageConsoleAgent.h b/Source/core/inspector/PageConsoleAgent.h
index 4dbf7f6097548b94a9e2591488b1820416161cce..63c6a4da086e271e25140e660e7260d38c4f284a 100644
--- a/Source/core/inspector/PageConsoleAgent.h
+++ b/Source/core/inspector/PageConsoleAgent.h
@@ -41,11 +41,12 @@ class InspectorDOMAgent;
 class PageConsoleAgent FINAL : public InspectorConsoleAgent {
     WTF_MAKE_NONCOPYABLE(PageConsoleAgent);
 public:
-    static PassOwnPtr<PageConsoleAgent> create(InjectedScriptManager* injectedScriptManager, InspectorDOMAgent* domAgent, InspectorTimelineAgent* timelineAgent)
+    static PassOwnPtrWillBeRawPtr<PageConsoleAgent> create(InjectedScriptManager* injectedScriptManager, InspectorDOMAgent* domAgent, InspectorTimelineAgent* timelineAgent)
     {
-        return adoptPtr(new PageConsoleAgent(injectedScriptManager, domAgent, timelineAgent));
+        return adoptPtrWillBeNoop(new PageConsoleAgent(injectedScriptManager, domAgent, timelineAgent));
     }
     virtual ~PageConsoleAgent();
+    virtual void trace(Visitor*) OVERRIDE;
 
     virtual bool isWorkerAgent() OVERRIDE { return false; }
 
@@ -54,7 +55,7 @@ private:
     virtual void clearMessages(ErrorString*) OVERRIDE;
     virtual void addInspectedNode(ErrorString*, int nodeId) OVERRIDE;
 
-    InspectorDOMAgent* m_inspectorDOMAgent;
+    RawPtrWillBeMember<InspectorDOMAgent> m_inspectorDOMAgent;
 };
 
 } // namespace WebCore