CSP: Dedicated workers always inherit policy.

third_party/WebKit/Source/core/workers/InProcessWorkerMessagingProxy.h

 /*
  * Copyright (C) 2008 Apple 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.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 37 matching lines @@
 
 class CORE_EXPORT InProcessWorkerMessagingProxy
     : public ThreadedMessagingProxyBase {
   WTF_MAKE_NONCOPYABLE(InProcessWorkerMessagingProxy);
 
  public:
   // These methods should only be used on the parent context thread.
   void startWorkerGlobalScope(const KURL& scriptURL,
                               const String& userAgent,
                               const String& sourceCode,
-                              ContentSecurityPolicy*,
                               const String& referrerPolicy);
   void postMessageToWorkerGlobalScope(PassRefPtr<SerializedScriptValue>,
                                       MessagePortChannelArray);
 
   void workerThreadCreated() override;
   void parentObjectDestroyed() override;
 
   bool hasPendingActivity() const;
 
   // These methods come from worker context thread via
@@ skipping 41 matching lines @@
   // Indicates whether there are pending activities (e.g, MessageEvent,
   // setTimeout) on the worker context.
   bool m_workerGlobalScopeHasPendingActivity = false;
 
   WeakPtrFactory<InProcessWorkerMessagingProxy> m_weakPtrFactory;
 };
 
 }  // namespace blink
 
 #endif  // InProcessWorkerMessagingProxy_h