Tried using CrossThreadPersistent for workerDebuggerAgents

Source/core/inspector/InjectedScriptHost.h

 /*
  * Copyright (C) 2007 Apple Inc. All rights reserved.
  * Copyright (C) 2009 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  *
  * 1.  Redistributions of source code must retain the above copyright
  *     notice, this list of conditions and the following disclaimer.
@@ skipping 38 matching lines @@
 class ScriptValue;
 class Storage;
 
 struct EventListenerInfo;
 
 // SECURITY NOTE: Although the InjectedScriptHost is intended for use solely by the inspector,
 // a reference to the InjectedScriptHost may be leaked to the page being inspected. Thus, the
 // InjectedScriptHost must never implemment methods that have more power over the page than the
 // page already has itself (e.g. origin restriction bypasses).
 
-class InjectedScriptHost : public RefCounted<InjectedScriptHost>, public ScriptWrappable {
+class InjectedScriptHost : public RefCountedWillBeGarbageCollectedFinalized<InjectedScriptHost>, public ScriptWrappable {
 public:
-    static PassRefPtr<InjectedScriptHost> create();
+    static PassRefPtrWillBeRawPtr<InjectedScriptHost> create();
     ~InjectedScriptHost();
+    void trace(Visitor*);
 
     void init(InstrumentingAgents* instrumentingAgents, ScriptDebugServer* scriptDebugServer)
     {
         m_instrumentingAgents = instrumentingAgents;
         m_scriptDebugServer = scriptDebugServer;
     }
 
     static Node* scriptValueAsNode(ScriptValue);
     static ScriptValue nodeAsScriptValue(ScriptState*, Node*);
 
@@ skipping 16 matching lines @@
     void debugFunction(const String& scriptId, int lineNumber, int columnNumber);
     void undebugFunction(const String& scriptId, int lineNumber, int columnNumber);
     void monitorFunction(const String& scriptId, int lineNumber, int columnNumber, const String& functionName);
     void unmonitorFunction(const String& scriptId, int lineNumber, int columnNumber);
 
     ScriptDebugServer& scriptDebugServer() { return *m_scriptDebugServer; }
 
 private:
     InjectedScriptHost();
 
-    InstrumentingAgents* m_instrumentingAgents;
+    RawPtrWillBeMember<InstrumentingAgents> m_instrumentingAgents;
     ScriptDebugServer* m_scriptDebugServer;
     Vector<OwnPtr<InspectableObject> > m_inspectedObjects;
     OwnPtr<InspectableObject> m_defaultInspectableObject;
 };
 
 } // namespace WebCore
 
 #endif // !defined(InjectedScriptHost_h)