Revert of Pass per-frame task runners to Workers (when possible)

third_party/WebKit/Source/web/WebEmbeddedWorkerImpl.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 24 matching lines @@
 
 #include "public/web/WebContentSecurityPolicy.h"
 #include "public/web/WebDevToolsAgentClient.h"
 #include "public/web/WebEmbeddedWorker.h"
 #include "public/web/WebEmbeddedWorkerStartData.h"
 #include "public/web/WebFrameClient.h"
 #include <memory>
 
 namespace blink {
 
-class ParentFrameTaskRunners;
 class ServiceWorkerGlobalScopeProxy;
 class WebLocalFrameImpl;
 class WebServiceWorkerNetworkProvider;
 class WebView;
 class WorkerInspectorProxy;
 class WorkerScriptLoader;
 class WorkerThread;
 
 class WebEmbeddedWorkerImpl final
     : public WebEmbeddedWorker
@@ skipping 47 matching lines @@
     // to WorkerContext.
     std::unique_ptr<WebWorkerContentSettingsClientProxy> m_contentSettingsClient;
 
     // We retain ownership of this one which is for use on the
     // main thread only.
     std::unique_ptr<WebServiceWorkerNetworkProvider> m_networkProvider;
 
     // Kept around only while main script loading is ongoing.
     RefPtr<WorkerScriptLoader> m_mainScriptLoader;
 
-    std::unique_ptr<ParentFrameTaskRunners> m_mainThreadTaskRunners;
-
     std::unique_ptr<WorkerThread> m_workerThread;
     RefPtr<WorkerLoaderProxy> m_loaderProxy;
     Persistent<ServiceWorkerGlobalScopeProxy> m_workerGlobalScopeProxy;
     Persistent<WorkerInspectorProxy> m_workerInspectorProxy;
 
     // 'shadow page' - created to proxy loading requests from the worker.
     // Both WebView and WebFrame objects are close()'ed (where they're
     // deref'ed) when this EmbeddedWorkerImpl is destructed, therefore they
     // are guaranteed to exist while this object is around.
     WebView* m_webView;
@@ skipping 12 matching lines @@
         DoPauseAfterDownload,
         IsPausedAfterDownload
     } m_pauseAfterDownloadState;
 
     WaitingForDebuggerState m_waitingForDebuggerState;
 };
 
 } // namespace blink
 
 #endif // WebEmbeddedWorkerImpl_h