[v8 gc] Introduce a base class for all objects that can have pending activity

third_party/WebKit/Source/core/workers/WorkerMessagingProxy.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 39 matching lines @@
 class CORE_EXPORT WorkerMessagingProxy
     : public WorkerGlobalScopeProxy
     , private WorkerLoaderProxyProvider {
     WTF_MAKE_NONCOPYABLE(WorkerMessagingProxy);
 public:
     // Implementations of WorkerGlobalScopeProxy.
     // (Only use these methods in the worker object thread.)
     void startWorkerGlobalScope(const KURL& scriptURL, const String& userAgent, const String& sourceCode) override;
     void terminateWorkerGlobalScope() override;
     void postMessageToWorkerGlobalScope(PassRefPtr<SerializedScriptValue>, PassOwnPtr<MessagePortChannelArray>) override;
-    bool hasPendingActivity() const override;
+    bool hasPendingActivity() const final;
     void workerObjectDestroyed() override;
 
     // These methods come from worker context thread via WorkerObjectProxy
     // and are called on the worker object thread (e.g. main thread).
     void postMessageToWorkerObject(PassRefPtr<SerializedScriptValue>, PassOwnPtr<MessagePortChannelArray>);
     void reportException(const String& errorMessage, int lineNumber, int columnNumber, const String& sourceURL, int exceptionId);
     void reportConsoleMessage(MessageSource, MessageLevel, const String& message, int lineNumber, const String& sourceURL);
     void postMessageToPageInspector(const String&);
     void postWorkerConsoleAgentEnabled();
     void confirmMessageFromWorkerObject(bool hasPendingActivity);
@@ skipping 38 matching lines @@
     OwnPtrWillBePersistent<WorkerInspectorProxy> m_workerInspectorProxy;
 
     OwnPtrWillBePersistent<WorkerClients> m_workerClients;
 
     RefPtr<WorkerLoaderProxy> m_loaderProxy;
 };
 
 } // namespace blink
 
 #endif // WorkerMessagingProxy_h