Introduce WorkletGlobalScopeProxy interface.

third_party/WebKit/Source/web/ServiceWorkerGlobalScopeProxy.h

 /*
  * Copyright (C) 2013 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 72 matching lines @@
     void dispatchSyncEvent(int, const WebString& tag, LastChanceOption) override;
     bool hasFetchEventHandler() override;
 
     // WorkerReportingProxy overrides:
     void reportException(const String& errorMessage, PassOwnPtr<SourceLocation>) override;
     void reportConsoleMessage(ConsoleMessage*) override;
     void postMessageToPageInspector(const String&) override;
     void postWorkerConsoleAgentEnabled() override { }
     void didEvaluateWorkerScript(bool success) override;
     void didInitializeWorkerContext() override;
-    void workerGlobalScopeStarted(WorkerGlobalScope*) override;
+    void workerGlobalScopeStarted(WorkerOrWorkletGlobalScope*) override;
     void workerGlobalScopeClosed() override;
     void willDestroyWorkerGlobalScope() override;
     void workerThreadTerminated() override;
 
     DECLARE_TRACE();
 
     // Detach this proxy object entirely from the outside world,
     // clearing out all references.
     //
     // It is called during WebEmbeddedWorkerImpl finalization _after_
@@ skipping 13 matching lines @@
     Member<Document> m_document;
 
     WebServiceWorkerContextClient* m_client;
 
     Member<ServiceWorkerGlobalScope> m_workerGlobalScope;
 };
 
 } // namespace blink
 
 #endif // ServiceWorkerGlobalScopeProxy_h