Tried using CrossThreadPersistent for workerDebuggerAgents

Source/modules/indexeddb/InspectorIndexedDBAgent.cpp

 /*
  * Copyright (C) 2012 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:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 533 matching lines @@
         if (documentOrigin->toRawString() == securityOrigin)
             return frame;
     }
     return 0;
 }
 
 } // namespace
 
 void InspectorIndexedDBAgent::provideTo(Page* page)
 {
-    OwnPtr<InspectorIndexedDBAgent> agent(adoptPtr(new InspectorIndexedDBAgent(page)));
+    OwnPtrWillBeRawPtr<InspectorIndexedDBAgent> agent(adoptPtrWillBeNoop(new InspectorIndexedDBAgent(page)));
     page->inspectorController().registerModuleAgent(agent.release());
 }
 
 InspectorIndexedDBAgent::InspectorIndexedDBAgent(Page* page)
     : InspectorBaseAgent<InspectorIndexedDBAgent>("IndexedDB")
     , m_page(page)
 {
 }
 
 InspectorIndexedDBAgent::~InspectorIndexedDBAgent()
@@ skipping 199 matching lines @@
     IDBFactory* idbFactory = assertIDBFactory(errorString, document);
     if (!idbFactory)
         return;
 
     ScriptState* scriptState = ScriptState::forMainWorld(frame);
     ScriptState::Scope scope(scriptState);
     RefPtr<ClearObjectStore> clearObjectStore = ClearObjectStore::create(scriptState, objectStoreName, requestCallback);
     clearObjectStore->start(idbFactory, document->securityOrigin(), databaseName);
 }
 
+void InspectorIndexedDBAgent::trace(Visitor* visitor)
+{
+    visitor->trace(m_page);
+    InspectorBaseAgent::trace(visitor);
+}
+
 } // namespace WebCore