Update fetch / loader classes to use OVERRIDE / FINAL when needed

Source/core/loader/WorkerThreadableLoader.h

 /*
  * Copyright (C) 2009 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 32 matching lines @@
 
 namespace WebCore {
 
     class ResourceError;
     class ResourceRequest;
     class WorkerGlobalScope;
     class WorkerLoaderProxy;
     struct CrossThreadResourceResponseData;
     struct CrossThreadResourceRequestData;
 
-    class WorkerThreadableLoader : public RefCounted<WorkerThreadableLoader>, public ThreadableLoader {
+    class WorkerThreadableLoader FINAL : public RefCounted<WorkerThreadableLoader>, public ThreadableLoader {
         WTF_MAKE_FAST_ALLOCATED;
     public:
         static void loadResourceSynchronously(WorkerGlobalScope*, const ResourceRequest&, ThreadableLoaderClient&, const ThreadableLoaderOptions&);
         static PassRefPtr<WorkerThreadableLoader> create(WorkerGlobalScope* workerGlobalScope, ThreadableLoaderClient* client, const String& taskMode, const ResourceRequest& request, const ThreadableLoaderOptions& options)
         {
             return adoptRef(new WorkerThreadableLoader(workerGlobalScope, client, taskMode, request, options));
         }
 
-        ~WorkerThreadableLoader();
+        virtual ~WorkerThreadableLoader();
 
         virtual void cancel() OVERRIDE;
 
         bool done() const { return m_workerClientWrapper->done(); }
 
         using RefCounted<WorkerThreadableLoader>::ref;
         using RefCounted<WorkerThreadableLoader>::deref;
 
     protected:
         virtual void refThreadableLoader() OVERRIDE { ref(); }
@@ skipping 12 matching lines @@
         // case 1. worker.terminate is called.
         //    In this case, no more tasks are posted from the worker object's thread to the worker
         //    context's thread -- WorkerGlobalScopeProxy implementation enforces this.
         //
         // case 2. xhr gets aborted and the worker context continues running.
         //    The ThreadableLoaderClientWrapper has the underlying client cleared, so no more calls
         //    go through it.  All tasks posted from the worker object's thread to the worker context's
         //    thread do "ThreadableLoaderClientWrapper::ref" (automatically inside of the cross thread copy
         //    done in createCallbackTask), so the ThreadableLoaderClientWrapper instance is there until all
         //    tasks are executed.
-        class MainThreadBridge : public ThreadableLoaderClient {
+        class MainThreadBridge FINAL : public ThreadableLoaderClient {
         public:
             // All executed on the worker context's thread.
             MainThreadBridge(PassRefPtr<ThreadableLoaderClientWrapper>, WorkerLoaderProxy&, const String& taskMode, const ResourceRequest&, const ThreadableLoaderOptions&, const String& outgoingReferrer);
             void cancel();
             void destroy();
 
         private:
             // Executed on the worker context's thread.
             void clearClientWrapper();
 
             // All executed on the main thread.
             static void mainThreadDestroy(ExecutionContext*, MainThreadBridge*);
-            ~MainThreadBridge();
+            virtual ~MainThreadBridge();
 
             static void mainThreadCreateLoader(ExecutionContext*, MainThreadBridge*, PassOwnPtr<CrossThreadResourceRequestData>, ThreadableLoaderOptions, const String& outgoingReferrer);
             static void mainThreadCancel(ExecutionContext*, MainThreadBridge*);
             virtual void didSendData(unsigned long long bytesSent, unsigned long long totalBytesToBeSent) OVERRIDE;
             virtual void didReceiveResponse(unsigned long identifier, const ResourceResponse&) OVERRIDE;
             virtual void didReceiveData(const char*, int dataLength) OVERRIDE;
             virtual void didDownloadData(int dataLength) OVERRIDE;
             virtual void didReceiveCachedMetadata(const char*, int dataLength) OVERRIDE;
             virtual void didFinishLoading(unsigned long identifier, double finishTime) OVERRIDE;
             virtual void didFail(const ResourceError&) OVERRIDE;
@@ skipping 17 matching lines @@
         WorkerThreadableLoader(WorkerGlobalScope*, ThreadableLoaderClient*, const String& taskMode, const ResourceRequest&, const ThreadableLoaderOptions&);
 
         RefPtr<WorkerGlobalScope> m_workerGlobalScope;
         RefPtr<ThreadableLoaderClientWrapper> m_workerClientWrapper;
         MainThreadBridge& m_bridge;
     };
 
 } // namespace WebCore
 
 #endif // WorkerThreadableLoader_h